Development Manager

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Job Title: Development Manager
Department: Development
Reports to: Vice President of Philanthropy
FLSA Category: Non-exempt

Job Description

The Development Manager is the point person for American Forests’ direct marketing program, which includes direct mail and digital fundraising efforts, and acts as the main contact for annual fund donors. The Development Manager also provides administrative support for the Vice President of Philanthropy, assists the Director of Major Gifts by helping to identify potential major donors through the direct marketing program, and helps the Director of Corporate Giving by serving as manager of the Small Business Partners program. The Development Manager role is ideal for a creative, detail-oriented, “people” person, who is looking to gain experience in a fundraising department with many different revenue streams, all while making a positive impact on the environment.

Specific Responsibilities

20% – Direct Marketing (digital and mail) – Project Lead

  • Drafting and/or copy editing for mail appeals for new and current donors
  • Email copy writing, minor design and implementation
  • Donation form copy writing, testing, and management
  • Database queries for mailing lists and acquisition list exchanges
  • Weekly meetings, campaign kick offs and calls with vendors
  • Orchestrating copy and art editing process among relevant team members

30% – Development Administration – Project Support

  • Organizing, purchasing and inventorying supplies, in-kind gifts, and premiums
  • Updating database records with new donors addresses/phones/emails
  • Answering donor calls to the Membership hotline
  • Creating agendas and organizing meetings
  • Responding to donor emails
  • Checking bill payments and producing expense reports
  • In-house mailing management

25% – Database Queries and Reports – Project Support

  • Revenue report building
  • Contact list report building
  • Monthly revenue metrics and recording
  • Creating record segmentation and flags for activities and mailings

15% – Corporate Giving Support – Project Support

  • Weekly invoicing of corporate partners, and compiling and sending acknowledgement letters
  • Creating, scanning and filing small business agreement contracts and pledge sheets, and managing small business partners’ requests and needs
  • Sending out small business partner email blasts

10% – Misc. – Project Support

  • Managing Development interns and temps, as needed
  • Other duties as assigned

 

Requirements

The successful candidate will be an excellent communicator by phone and in writing, have excellent people skills and experience providing first-rate customer service. The ability to manage multiple projects, juggle competing priorities and work effectively within teams are also essential. Additional required skills include:

  • Excellent writing skills and experience copy writing and editing fundraising appeals
  • Strong project management and organization skills and the ability to meet deadlines
  • Proficiency with Microsoft Office Suite, including Excel
  • Experience using fundraising databases, such as Neon, Salesforce, Blackbaud, etc.
  • Experience with WordPress and HTML preferred
  • Digital marketing experience preferred

 

Qualifications

Bachelor’s degree or equivalent experience is required. Marketing, communications, or creative writing focus welcomed. Strong writing skills and database experience are essential.

 

Working Conditions

The majority of work is performed in a general office environment, with occasional opportunities to travel. American Forests is located in downtown Washington, D.C., within walking distance of Metro stations on all lines, multiple bus lines, and Capital Bikeshare.

 

To Apply

Please send resume and cover letter to jobs@americanforests.org.

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Forest Digest: March 25, 2018

March 25th, 2018|Tags: , , , |0 Comments

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Credit: via meteoweb.eu

Check out what’s happened this week in forestry news!

Plant urban trees and forests for happier and healthier citiesThomas Reuters Foundation News

Despite the many benefits of trees, especially in urban environments, countless trees are removed to make space for more roads and buildings. This year, the theme for the International Day of Forests was forests and sustainable cities. Numerous cities around the world are making the effort to plan, plant, and nurture urban forests.

Drought-induced changes in forest composition amplify effects of climate change – Phys.org

In a new study focused on forests in the eastern U.S., researchers determined that climate change-induced shifts in rainfall and temperature are affecting the abundance of numerous tree species. Some forests are already starting to look different, which affects their ability to absorb carbon.

Jaguars and well-managed logging concessions can coexist, say conservationists – Wildlife Conservation Society via EurekaAlert!

A recent study published in Biological Conservation investigated the impact of logging activities on jaguars in Guatemala and Peru. Researchers found that carefully managed logging operations can play an important role in maintaining habitats for jaguars and other large wildlife species.

What is blue carbon?forestsnews.cifor.org

Blue carbon is carbon captured and stored in oceans and coastal ecosystems. It also includes coastal carbon stored in tidal wetlands. Mangrove forests and other wetlands are effective carbon sinks. They have the potential to play a major role in meeting national and global targets on climate change.

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American Forests Responds: Fire Suppression Funding Fix in the 2018 Omnibus

March 22nd, 2018|Tags: |0 Comments

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The inclusion of a legislative fix to the fire suppression funding process in the FY 2018 Omnibus appropriations bill is a major step forward for the health and resiliency of America’s forests.

As a leader in the Fire Funding Fix Coalition, American Forests has been working on this issue for many years with conservation and sporting organizations, the forest products industry, local and county officials and other diverse interests.

“We sincerely thank the Congressional members and staff from both sides of the aisle who worked tirelessly to come to an agreement on such an important issue,” said Scott Steen, president and CEO of American Forests. “This effort shows that when diverse groups can work together to present elected officials with something that benefits everyone, we really can get things done. America’s forests have always been common ground, and this strong bi-partisan agreement demonstrates that again.”

The fire funding fix negotiated in the Omnibus appropriations package secures stable funding for fighting wildfires, without harming other federal programs that benefit forests. The package also includes some reasonable provisions to expedite important forest management on the National Forest System that will make forests more resilient to fire and other threats. This is especially important given the mounting impacts of climate change, which are escalating the frequency and intensity of fires and many other stresses on forest health.

Specifically, the Omnibus includes the following key provisions to fix the funding model for fire suppression: (1) it freezes the 10-year average for fire costs at the fiscal year 2015 level, halting the increasing percentage of the U.S. Forest Service’s budget that has been going to fighting fires; (2) it establishes a contingency account for use in bad fire years when appropriated levels are not enough and funds it with more than $2 billion a year through 2027; (3) it reduces the need to transfer funds from non-fire related programs, allowing the U.S. Forest Service to implement all other aspects of its work, including investment in forest thinning and other actions that reduce the risk of extreme wildfires.

“This comprehensive funding solution addresses our biggest concerns,” said Jad Daley, vice president of conservation programs at American Forests. “The U.S. Forest Service has multiple mandates that can now be fully implemented. Fire funding will no longer shortchange the Forest Service’s ability to do other important work, like restoring our forests for health and resilience in a changing climate, supporting urban forestry, and using forests to clean our air and water.”

American Forests would also like to thank our members and supporters who sent thousands of letters to their elected officials urging them to support such a fix.

“Elected officials need to hear from their constituents that they care about these issues,” said Rebecca Turner, senior director of programs and policy at American Forests. “When Congress hears not just from the policy professionals in D.C., but from the folks in their districts, it helps to elevate the need for finding a solution.”

The FY 2018 Omnibus is expected to pass by Congress later this week.

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5 of the Best Things About Spring

March 20th, 2018|0 Comments

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By Devon Kellums, American Forests

At American Forests, we love every season, but the fresh scents, beautiful colors and new life make us excited for the first day of spring each year!

Read on to find out some of our favorite spring things and help us celebrate the start of a new season.

1. Fresh Blooms

Whether it’s flowers or trees, everything is in bloom during the spring. The sweet scent of pollen swirls through the air. It’s incredible to see nature sprout and grow right before your eyes.

2. Vibrant Colors

Going from leafless trees and the snow-covered ground to being surrounded by vibrant and luscious landscapes is one of the most refreshing feelings. The world comes to life after surviving the cold winter and it’s apparent in the blue skies and bright green grass.

3. Baby Animals

New life is everywhere during springtime. Animals come out of hibernation and babies are born. From lambs and ducklings to fox pups and bear cubs, you’ll be sure to get your fill of cute baby animals.

4. Cherry Blossoms

Sweet smells and delicate flowers make cherry blossoms one of the many great gifts that comes with spring. If you’re lucky enough to live in an area with cherry trees, don’t forget to take a moment to appreciate the beauty they bring to the surrounding landscape.

5. A New Soundtrack

The sounds of the season tie everything together. Branches and leaves rustling, birds singing and creeks trickling are music to the ears. Waking up in the morning is a bit easier when you’re greeted by spring’s song.

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Forest Digest: March 18, 2018

March 18th, 2018|Tags: , , , |0 Comments

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Check out what’s happened this week in forestry news!

The National Forests Of The Future Need To Be In CitiesFastCoDesign.com

According to a new study from the U.S. Forest Service, the country’s urban footprints are going to almost double over the next 40 years, meaning we need to incorporate urban forests into infrastructure to maintain the benefits of a well-forested environment.

USFS reminds public to be careful with fire when visiting forests amid dry conditionsFOX21 News

Officials say it is more important now than ever to be cautious when using any kind of fire during visits to state forests to avoid human-induced wildfires.

5 innovations that could end plastic waste – GreenBiz

Plastic waste is rapidly accumulating in our rivers, oceans, forests and beyond, and the negative impacts are impossible to ignore. These innovative materials may offer a solution to one of our biggest environmental challenges.

FEMA Drops ‘Climate Change’ From Its Strategic PlanNPR

A new strategic planning document released Thursday from the Federal Emergency Management Agency eliminated any references to global warming, rising sea levels, extreme weather and other climate-related threats.

Hard work required for goal of old growth forests in Central OhioOhio’s Country Journal

One man in central Ohio hopes to restore hundreds of acres of what was once old-growth forest back to its original state.

The post Forest Digest: March 18, 2018 appeared first on American Forests.

Helping Wildlife Move Back In

March 15th, 2018|Tags: |0 Comments

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By Leah Rambadt, American Forests

Interested in helping local wildlife reclaim habitat space? Then create your own wildlife habitat garden!

Wildlife habitat gardens are accessible to wildlife all year round. Here are some considerations and preparations you should go through when planning and maintaining your garden.

A backyard converted into a National Wildlife Federation-certified wildlife habitat garden. Credit: Marie T. Reamer

Consider the Basics

A wildlife garden begins with your plants, since you’re trying to replicate pre-development land conditions. When you plant native plant species wildlife depend on, you create a habitat that starts restoring your local environment.

Location/Space

While this may seem obvious, it’s important to be aware of your location and the amount of space available in your yard. Design your wildlife garden to target specific wildlife based on the space available. For example, if you live in the city, you can target invertebrates, small animals and birds.

Create wildlife corridors by planting in open areas of your lawn. This will encourage invertebrates and other small animals to move around more. Instead of fences, you can also plant hedges as borders to act as corridors and cover for various wildlife. Flowering hedges, which grow berries in the fall and winter, can act as a food source for birds.

Be aware that overcrowding your garden can be just as harmful for wildlife movement as providing minimal plant-life for coverage.

Food

Native plants provide nectar, seeds, nuts, fruits, berries, foliage, pollen and insects for wildlife.

A bee pollinates a hawthorn blossom. Credit: Crataegus Monogyna

When you decide to plant native plants, it may seem harmless to grow plant species not native to your local area. However, doing so can negatively affect the local wildlife. You should only plant local, native species in your garden, since they are the ones local pollinators have evolved to rely on.

To find out the types of plant-life native to your area, search the National Wildlife Federation‘s (NWF) plant-finder database or search the web.

While choosing what to plant, consider the types of wildlife you want to attract, and learn their habits. This will allow you to accurately select the best plants to include in your garden. You should plant a variety of vegetation for all seasons, so wildlife will have food all year round.

Feeders can supplement natural food sources. By regularly providing a diversity of food, your garden can attract a range of birds. Make sure to provide a cover to keep squirrels from raiding the feeders.

Water

Provide a water source. Birds may also use a water source as a birdbath, while various insects may use it for a breeding ground. The container should have sloped sides to allow easy access.

Cover

The trick to providing good cover for wildlife is resisting the urge to completely clean your yard. Some of the “mess” you leave behind makes a good shelter for wildlife.

  • Soil: Unless you’re planting, don’t dig your garden soil, and lay down compost on top to increase the invertebrate (earthworm and beetle larvae) population. This also provides a foraging site for birds like robins.
  • Vertical Space: If you have space, you can encourage winged and crawling wildlife into an urban garden on a wall (i.e.: insect hotel, climbing vines).

Insect hotels hanging on walls saves yard space while still providing a habitat. Credit: RBC Blue Water Roof Garden

  • Garden Glade: Plant woodland flowers in succession under trees to provide shelter for invertebrates and frogs.
  • Piles: Put logs and piles of sticks under bushes and around garden edges to provide shelter for a variety of animals. Grow ivy or place sods of earth on top for humidity. Compost, trimmings, and decomposing and discarded garden off-cut piles work as well.
  • Lawn: Keep the center of your lawn short for foragers, and leave the edges long for the invertebrates.

Places for Wildlife to Raise Their Young

Most of the habitats listed above are good locations for wildlife to raise their young. You can also provide birdhouses or nesting boxes for birds. Keep in mind that some species of wildlife need a completely different habitat during their juvenile phase than they do as adults.

An eastern bluebird uses a nest box to shelter its young. Credit: Hazel Erikson/Audubon Photography Awards

Sustainable Practices – How to Manage Your Garden

  • Native plants should be of genuine native stock, not of continental origin. The wildflowers should also have been cultivated from legally collected seed, not dug up from the wild.
  • Avoid using peat.
  • Find alternative forms of compost.
  • Collect rainwater to refill your water sources.
  • Recycle: Use reclaimed, old materials when building raised borders and other garden structures.
  • Avoid using pesticides and use non-toxic, non-chemical alternatives.

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What You Can Do Now – Spring Preparation

Late fall through early spring is the best time to sow seeds of various native wildflowers that support wildlife, such as birds and bees. Planting these seeds increases local genetic diversity, since most garden centers only sell plants selected and cloned for certain characteristics (e.g., color).

You can get seeds from your backyard, native plant societies, garden clubs, nature centers, and NWF community habitat groups. Plant these seeds outside (times vary by species) to let them germinate.

Good luck with your garden this year!

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Multimedia Intern

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American Forests’ Communications & Marketing department coordinates the organization’s communications channels: editorial (Loose Leaf blog and American Forests magazine), digital content (web, email and social media) and special projects associated with our programs. The department is responsible for all publicity activities and marketing materials used to advance the organization. Interns in this department will have the opportunity to assist on projects related to all of these items.

Job Description

The multimedia intern will assist on a variety of photo, video and graphic design projects, depending on skillset, for all of American Forests’ communications channels listed above, in the areas of:

  • Photography
    • Conduct photo research, help maintain the photo archive and edit photos as necessary.
    • Create photo assets for social media and email.
    • Maintain photo galleries page on americanforests.org.
  • Video
    • Assist with American Forests’ video projects, including major videos and smaller projects for various audiences and channels.
    • Research, compile and maintain stock video library.
    • Compile list of inspiration videos from like-minded organizations and major brands.
  • Graphic Design
    • Assist with development of infographics and other graphic design projects, including organizational documents and marketing collateral.
  • Miscellaneous
    • Complete multimedia-related writing assignments for American Forests’ blog and special projects.

 

Requirements

Candidates must be currently attending an accredited four-year college or university, preferably enrolled in a photography, visual arts, fine arts, graphic design or film/documentary program. American Forests internships are unpaid and available year-round to students receiving academic credit.

Qualifications

  • Strong written and verbal communications skills
  • Proficiency in Adobe Creative Suite — notably Photoshop and Premiere Pro — or similar design skills
  • Knowledge of graphic design, photography and videography concepts and principles, a plus
  • Proficiency in Microsoft Office
  • Independent worker
  • Organized, deadline-oriented and creative
  • Interest in working for a nonprofit or environmental organization

 

To Apply

We are currently accepting applicants for the summer and fall 2018 terms. To apply for this internship, please send a cover letter, résumé and two multimedia work samples to Christopher Horn, Director of Communications, at chorn@americanforests.org. The position will remain open until filled.

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Science Advisory Board Q&A: Chris Swanston

March 13th, 2018|Tags: , , |0 Comments

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By Andrew Bell, American Forests

ASCC Project Investigators Chris Swanston, Brian Palik and Linda Nagel. Credit: Stephen Handler/U.S. Forest Service

Chris Swanston is the Director of the Northern Institute of Applied Climate Science. His studies focus on climate adaptation and forest soil carbon. Together with American Forests and the University of Michigan, he is developing a robust project that will span regional soil data collection, stakeholder engagement and policy development in a best-practices model for addressing climate adaptation head-on.

I had the chance to speak with Chris at length about this exciting new project and his introduction to the Science Advisory Board at American Forests.

What made the opportunity to join the Science Advisory Board at American Forests so enticing?
American Forests is one of the premier forest conservation organizations in the country, so why wouldn’t I want to help guide the science-based decisions and policies that American Forests is pursuing? It was kind of a no-brainer, in other words.

How do you think the relationship with American Forests and with the other Science Advisory Board members can help you and your work?
In my experience on boards like this, I come in certainly with opinions and with experience, but I come in an active learning mode. I hope to gather information and perspectives and other people’s experiences, just as actively as I can give my own. So what I hope to gain is their perspectives and hard-won experience, so I can integrate that information right back into my own program.

Do you see yourself finding a climate science niche within the board?
Certainly, I imagine having a climate science niche. I run an organization that’s one of the premier forest climate adaptation organizations in the country. My group works with hundreds of forest managers. We interact with leadership of federal and state agencies in terms of providing science information from policymaking decisions. We produce the educational and training tools to help people who are working on the ground to make the decision that they need to make in a climate informed-manner. So certainly, I can bring in the experience that we’ve gained through time doing that to this advisory board. And likewise, as we talk to people about their jobs, we may come to them to discuss climate science and trends and how that may interact with their work.

Why is American Forests the perfect partner to embark on a project like this?
I think it worked quite well in the sense that American Forests is rethinking the way that they interact with their stakeholders now and moving into the future. They’re thinking about how they make decisions and how they roll those decisions out; how actively they work with people on the ground, and the ways that they choose to influence policy at multiple levels.

What are some critical gaps in national-level soil data that you would like to narrow with this project?
Soil carbon is something that a lot of people consider to be just a big black box. We know that there are lots of it and it’s often the bulk of the carbon that you’ll find in an ecosystem. Yet when [people] model carbon into the future and integrate that modeling with climate change, and maybe with management, they often just assume that there’s going to be no change to the soil carbon. But we know from years of land management and soil carbon science that even just the management that we do can affect soil carbon. So, it’s very spurious to think that a combination of management and climate change won’t affect soil carbon.

What makes soil carbon data so difficult to collect at the site level?
You’ve got the issue of expense of getting someplace to sample. And then, once you’re there, there’s this issue of how many samples can you possibly take to adequately characterize the variability of the soil within that place… The whole thing has to be insured. So, there are all of these hidden costs that, until you actually pursue one of these campaigns, you don’t realize they’re there. And when you pursue the campaign, you’re crushed by the logistics and the fact that each piece has some cost associated with it.

What’s the most common misconception pertaining to forest soil carbon that you find among private landowners?
I think the biggest hump to get over is to remind them that while it’s not as beautiful as some of the birds that they appreciate or as lucrative as some of the timber that they care about or as gorgeous as the fall colors, the soils their forests grow in are what make all of those other things possible. You’re not going to hold anybody’s attention very long with that conversation, so you’ve got to give them a few key ideas about protecting those soils for the benefit of the other things they really do care about, and that’s what we try to do.

Do you think there’s a way to get landowners to think about and address issues with their forest soils without the aid of monetary incentives?
Yeah, I think so. The most important thing to do is to first ask them what do they care about the most; what do they care about the most in their forest? And then put everything else within the context of what they care about. And as long as we’re listening to them, we can help frame the things that we want to express in terms that they understand and within their value system. It always comes down to listen first, and then place the discussion within their value system.

How do you see this project contributing to American Forests’ work, mission and legacy?
It can help people think about how their conservation can explicitly and intentionally support greenhouse gas mitigation and climate adaptation, and do so in a way that still pursues their identified conservation goals. We’re looking for an “everybody wins” kind of solution.


Learn more about Chris and the expertise he brings to American Forests via the U.S. Forest Service.

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Alsup asks for answers

Some of you might have read about the lawsuit by a number of municipalities (including San Francisco and Oakland) against the major oil companies for damages (related primarily to sea level rise) caused by anthropogenic climate change. The legal details on standing, jurisdiction, etc. are all very interesting (follow @ColumbiaClimate for those details), but somewhat uniquely, the judge (William Alsup) has asked for a tutorial on climate science (2 hours of evidence from the plaintiffs and the defendents). Furthermore, he has posted a list of eight questions that he’d like the teams to answer.

It’s an interesting list. They are quite straightforward (with one or two oddities), but really, pretty much textbook stuff. Andrew Dessler made a quick stab at answering them on Twitter:

But I think we can do better. So what I propose is that we crowd-source the responses. They should be pithy, to the point, with references (not Wikipedia) and, preferentially, accompanied by a good graphic or two. If we can give a credible uncertainty to any numbers in the answer that’s a bonus. I’ve made a start on each, but further voices are needed. Put your response in the comments and I’ll elevate the best ones (giving credit of course) to the main post. If you have any other comments or edits to suggest, feel free to do so. The best of those will also be incorporated.


Alsup’s Questions:

  1. What caused the various ice ages (including the “little ice age” and prolonged cool periods) and what caused the ice to melt? When they melted, by how much did sea level rise?
  2. What is the molecular difference by which CO2 absorbs infrared radiation but oxygen and nitrogen do not?
  3. What is the mechanism by which infrared radiation trapped by CO2 in the atmosphere is turned into heat and finds its way back to sea level?
  4. Does CO2 in the atmosphere reflect any sunlight back into space such that the reflected sunlight never penetrates the atmosphere in the first place?
  5. Apart from CO2, what happens to the collective heat from tail pipe exhausts, engine radiators, and all other heat from combustion of fossil fuels? How, if at all, does this collective heat contribute to warming of the atmosphere?
  6. In grade school, many of us were taught that humans exhale CO2 but plants absorb CO2 and return oxygen to the air (keeping the carbon for fiber). Is this still valid? If so, why hasn’t plant life turned the higher levels of CO2 back into oxygen? Given the increase in human population on Earth (four billion), is human respiration a contributing factor to the buildup of CO2?
  7. What are the main sources of CO2 that account for the incremental buildup of CO2 in the atmosphere?
  8. What are the main sources of heat that account for the incremental rise in temperature on Earth?

Alsup’s Answers:

Note this is an updating text. Last edit: March 11, 2018

  1. The “ice ages” are the dominant cycles of change over the last 2.5 million years (Snyder, 2016):

    Ice age cycles from Snyder (2016)

    They vary in amplitude and phasing (becoming larger in the last 800,000 years), and moving from a dominant 40,000 yr periodicity in the first half to a 100,000 yr periodicity in the later period. It was discovered in the 1970’s that the pacing of the cycles seen in benthic foraminiferal oxygen isotopes was highly correlated to the Milankovitch cycles of orbital variability (Hays, Imbrie and Shackleton, 1976). More recent work has shown that the growth and collapse of the ice sheets is strongly tied to the insolation (Roe, 2006):

    The magnitude of the cycles is strongly modified by various feedbacks, including ice-albedo, dust, vegetation and, of course, the carbon cycle. Estimates of the drivers of global temperature change in the ice ages show that the changes in greenhouse gases (CO2, methane and nitrous oxide) made up about a third of the effect, amplifying the ice sheet changes by about 50% (Köhler et al, 2010).

  2. Greenhouse gases are those that are able to absorb and emit radiation in the infrared, but this is highly dependent on the gases molecular structure. Diatomic molecules (like N2 or O2) have stretching modes (with the distance between the two molecules expanding and contracting), but these require a lot of energy (so they absorb only at higher energies. Vibrational modes in triatomic molecules (H2O, CO2, O3, N2O) or in more complex modecules (CH4, CFCs, HFCs…) are easier to excite and so will absorb and emit lower energy photons (corresponding to the infrared bands, that just happen to be how the Earth loses heat to space).
  3. The Earth’s surface emits infrared radiation. This is absorbed by greenhouse gases, which through collisions with other molecules cause the atmosphere to heat up. Emission from greenhouse gases (in all directions) adds to the warming at the surface.

    The figure shows the easiest description of the greenhouse effect.

  4. Not enough to matter. The latest update to the estimates of radiative forcing of CO2 (Etminan et al., 2016) shows a shortwave effect (i.e. a change in the absorption of downward solar radiation) is about -0.14 W/m2 for CO2 going from 389 to 700 ppm (compared to 3.43W/m2 in longwave forcing) – contributing to about a 4% decrease in the net forcing.
  5. Direct heat generated by the total use of fossil fuels and other forms of energy adds up to about 18TW [IEA,2017]. Spread over the planet that is 0.04W/m2. Compared to anthropogenic forcings since 1750 of about 2.29±1.1W/m2 [IPCC AR5, Figure SPM 5], it’s about 1/100th the size. Locally however (say in cities or urban environments), this can be more concentrated and have a bigger impact.
  6. All animals (including humans) breathe in oxygen and exhale CO2. The carbon in the exhaled CO2 comes from the food that the animals have eaten, which comes (ultimately) from carbon that plants have taken from the atmosphere during photosynthesis. So respiration is basically carbon neutral (it releases CO2 to the atmosphere that came from the atmosphere very recently). Note that any net change in biomass (whether trees, or cows or even humans) does affect atmospheric CO2, but the direct impact of human population growth is tiny even though the indirect effects are huge. For scale, the increase of 3 billion people over the last 40 years, is equivalent to:

    0.185 (fraction of carbon by mass) * 80 kg (average mass of a human) * 3 billion (additional humans) * 10-3 (conversion to GtC) / 40 years = 0.001 GtC/yr

    compared to current fossil fuel and deforestation emissions of ~10 GtC/yr (4 orders of magnitude bigger).

  7. Main sources of human CO2 emissions are fossil fuel burning and (net) deforestation. This figure is from the Global Carbon Project in 2017.

  8. This is the biggie. What is the attribution for the temperature trends in recent decades? The question doesn’t specify a time-scale, so let’s assume either the last 60 years or so (which corresponds to the period specifically addressed by the IPCC, or the whole difference between now and the ‘pre-industrial’ (say the decades around 1850) (differences as a function of baseline are minimal). For the period since 1950, all credible studies are in accord with the IPCC AR5 statement:

    It is extremely likely that more than half of the observed increase in global average surface temperature from 1951 to 2010 was caused by the anthropogenic increase in greenhouse gas concentrations and other anthropogenic forcings together. The best estimate of the human-induced contribution to warming is similar to the observed warming over this period.

    For instance, this summary graphic is useful:

    Basically, all of the warming trend in the last ~60yrs is anthropogenic (a combination of greenhouse gases, aerosols, land use change, ozone etc.). To get a sense of the breakdown of that per contribution for the global mean temperature, and over a longer time-period, the Bloomberg data visualization, using data from GISS simulations is very useful.

    The difference in the bottom line for attribution for the last ~160 years is that while there is more uncertainty (since aerosol and solar forcings are increasingly shaky that far back), the big picture isn’t any different. The best estimate of the anthropogenic contribution is close to the entire warming. The potential for a solar contribution is slightly higher (perhaps up to 10% assuming maximum estimates for the forcing and impacts). In all cases, the forcing from anthropogenic greenhouse gases alone is greater than the observed warming.

    The role of internal climate variability gets smaller as the time-scale increases, but needs to be accounted for in these assessments. Note too that this can go both ways, internal variability might have wanted to cool overall in one period, and warm in another.

References


  1. C.W. Snyder, “Evolution of global temperature over the past two million years”, Nature, vol. 538, pp. 226-228, 2016. http://dx.doi.org/10.1038/nature19798


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Forest Digest: March 11, 2018

March 11th, 2018|Tags: , |0 Comments

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Eastern Bristlebird Credit: David Cook

Check out what’s happened this week in forestry news!

Birdsong loss would echo silence in the forests – The University of Queensland

The Eastern bristlebird only has three populations remaining in eastern Australia, and one of them is facing tremendous threats from habitat change and lack of appropriate fire regimens.

Why rare plants are rareScience Daily

Rare plant species are more susceptible to disease, which could explain why they are rare in the first place. A new study from the University of Bern could provide more answers and also indicate how climate change can make the problem worse.

Storms are destroying forests and, with them, carbonThe Bulletin

With extreme storms like Hurricanes Maria and Irma becoming more likely due to climate change, researchers are looking into how damage to forests will affect their ability to remove carbon from the atmosphere.

Insuring Nature to Ensure a Resilient Future – The Nature Conservancy

The Nature Conservancy, along with partners in Mexico’s state of Quintana Roo, have established the Coastal Zone Management Trust, a new model of funding that will allow for immediate action after severe weather damage occurs.

Indiana already feeling climate change effectsCourier & Press

Historic flooding and record-breaking rains are just two of the effects that will continue to accelerate as climate change worsens across the world.

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