climate change

Changes in climate and extreme weather are already increasing challenges for forest ecosystems across the world. Many impacts are expected to remain into the future.  This means forest managers, conservationists and woodland owners continually need to address climate change to ensure forests can provide a broad array of benefits and services. The USDA Northern Forests Climate Hub and the U.S. Forest Service provide tools to help address this need.

Collaboration between scientists and managers resulted in the publication Forest Adaptation Resources: Climate Change Tools and Approaches for Land Managers. This publication provides a suite of materials enabling land managers to consider the likely effects of climate change and increase the ability of forests to cope with climate change impacts.

When I hear the word drought I imagine dusty rangelands and drying lakes. But it’s hard to imagine tumbleweeds blowing through the Northern Forests of the Midwest and Northeast regions. In fact, these forests have seen overall wetter conditions in recent decades and their annual precipitation is expected to continue increasing with the changing climate.

So why worry about droughts in these northern forests?

In 2015, USDA launched the answer to President Obama’s Climate Action Plan challenge for food and forestry, with the Building Blocks for Climate Smart Agriculture and Forestry. Ten building blocks span a range of technologies and practices to reduce greenhouse gas emissions, increase carbon storage and generate clean renewable energy.  Through the Department’s voluntary and incentive-based conservation and energy programs, USDA and its partners are moving forward to reduce net emissions and enhance carbon sequestration by over 120 million metric tons of CO2 equivalent per year, or about 2 percent of economy-wide net greenhouse emissions, by 2025. This reduction is the equivalent of taking 25 million cars off the road or offsetting the emissions produced by powering nearly 11 million homes per year.

In keeping with these efforts, USDA too is working to reduce its own carbon footprint.  USDA is proud to be part of the Green Power Partnership, a voluntary program that encourages organizations to use green power as a way to reduce the environmental impacts associated with electricity use.  And USDA is even more proud to be recognized as number five on the U.S. Environmental Protection Agency’s (EPA's) Top 10 Federal Government list of the largest green power users from the Green Power Partnership. Additionally, USDA is number 43 on the National Top 100 list.

The Pennsylvania Association of Sustainable Agriculture (PASA) sponsored a field day on June 2 to talk about growing vegetables in a changing climate.  The discussion focused on climate change, its impacts on the farming system, and strategies to effectively adapt through increasing biodiversity on the farm.

PASA’s Director of Educational Programs, Franklin Egan, provided an overview of climate change trends and projections.  Dave King and others who farm 160 acres of vegetables and small fruit all sold within 25 miles of the farm, talked about their challenges and sustainable farming practices.  Among them, high tunnel beds have more aphids and pill bugs in the winter, downy mildew appears earlier in the summer, weeds are not any easier to manage especially without degrading soil health,  irrigation costs are rising, and deer pressure rises during droughts.  Practices being continuously adapted to respond to changing conditions include a highly diversified crop production system, use of beneficial insects, crop rotations, cover cropping, and rye straw mulch.

Agriculture Secretary Tom Vilsack visited the Caribbean Climate Hub in Puerto Rico earlier this month to lead a roundtable discussions with local agricultural officials, farmers and ranchers, USDA agency leaders, economic investors, and scientists, and to view first-hand the Hub’s pioneering work in climate change research, education and outreach.

“Adaptation to climate change is a matter of National Security.  We need to have a functional food economy to counter food insecurity,” said Secretary Vilsack during the Climate Hub Roundtable held at the El Yunque National Forest.  Local USDA agency leaders expressed concern about the increasing incidence of pests and diseases affecting agriculture and forestry in the Caribbean, mostly related to climate change, and the need for more education and support for water and soil conservation measures.

Susie Wauneka has discovered a unique way to serve her community; by watching the weather. Wauneka is a proud member of Navajo Nation and is a Navajo Community Health Representative, providing critical health care services for members of the Nation. In December 2015, she discovered yet another way to serve—by using a Community Collaborative Rain, Hail and Snow (CoCoRaHS) precipitation gauge to track the amount of rain and snow that falls.

The CoCoRaHS network is a unique grassroots network of thousands of trained volunteers of all ages and backgrounds working together to improve meteorological science by measuring and reporting precipitation amounts (rain, hail, and snow). CoCoRaHS is the largest provider of daily precipitation observations in the United States. The data from these observations are used by USDA and the National Oceanic and Atmospheric Administration (NOAA) for tools such as the United States Drought Monitor.

Trees do plenty of work to sequester carbon on their own, but many forests are not as healthy as they should be due to fire suppression and climate change. This can leave trees vulnerable to large scale insect damage, fire or drought, and much of the carbon stored by forests is lost to the atmosphere as trees die.

The U.S. Forest Service is committed to the storage of carbon using wood products through the green building and wood products strategy. This strategy involves putting people to work in rural communities, enhancing resiliency of our ecosystems, and sequestering carbon by promoting the use of wood products in large building construction.

All this month we will be taking a look at what a changing climate means to Agriculture. The ten regional USDA Climate Hubs were established to synthesize and translate climate science and research into easily understood products and tools that land managers can use to make climate-informed decisions. The Hubs work at the regional level with an extensive network of trusted USDA agency partners, technical service providers, University collaborators, and private sector advisers to ensure they have the information they need to respond to producers that are dealing with the effects of a variable climate. USDA's Climate Hubs are part of our broad commitment to developing the next generation of climate solutions, so that our agricultural leaders have the modern technologies and tools they need to adapt and succeed in the face of a changing climate.

How important will climate change considerations be in your work in the next 3-5 years?  That was one of the questions USDA employees were asked in mid-April at the start of a two-day workshop at the Animal and Plant Health Inspection Service (APHIS) in Riverdale, Maryland.  The hands-on training session, facilitated by APHIS’ Climate Change Working Group, the Forest Service, Northern Forests Climate Hub and the Northern Institute of Applied Climate Science, was designed to help APHIS employees from various program and support units incorporate climate change considerations into their actual projects.

This post is part of the Science Tuesday feature series on the USDA blog. Check back each week as we showcase stories and news from USDA’s rich science and research portfolio.

Responding to Climate Variability is one of the goal areas of the REE Action Plan.  The objective is to develop science-based knowledge to address climate variability, position agricultural communities to reduce emissions of greenhouse gases, and enhance carbon sequestration.

Many valuable USDA accomplishments for the year 2015 were the result of cross-divisional teams that developed useful tools to support decision-makers with research-based data.  Knowing weather and climate patterns--driving forces behind the success or failure of cropping systems--is vital information to land managers.  One such tool, AgroClimate, supported by REE and the National Oceanic and Atmospheric Administration (NOAA), helps users manage climate risk with tools that provide information on crops best suited to grow in their region, based on water availability and the amount of water a crop will use.

You probably know that climate change affects how we grow food, but you might not know that how food is grown also affects our climate. This interplay is at the heart of an Agricultural Research Service (ARS) project called “Soil and Air,” a concerted effort to feed the Earth’s 7.5 billion people while protecting the planet.

Farmers and ranchers produce food at the intersection of soil and air, which in turn impacts soil and air quality. For instance, warmer air creates warmer soil, leading to different compositions of bacteria and other microbes in the ecosystem and to increased moisture loss through evaporation.