Greenhouse Gases

In 2013, total U.S. greenhouse gas emissions measured 6,673 million metric tons of carbon dioxide equivalents (MMT CO2 eq.), rising 5.9 percent from 1990 estimates from the EPA. Global concentrations of the three most important long-lived greenhouse gases (GHG) in the atmosphere have increased measurably since the onset of the Industrial Revolution in 1750. Agriculture and forestry practices may either contribute to or remove GHGs from the atmosphere. Agriculture and forestry have contributed to GHGs in the atmosphere through cultivation and fertilization of soils, production of ruminant livestock, management of livestock manure, land use conversions, and fuel consumption. (Source: U.S. Agriculture and Forestry Greenhouse Gas Inventory: 1990-2013)

Research at dairy farms in Vermont shows how management practices can affect water quality, economics, and greenhouse gas emissions. Agriculture is a common land use for the well-drained and productive soils of Vermont’s Winooski floodplain. Intense rain and flooding events are…

Researchers in the Northern Plains have been studying how changes in the atmosphere might impact rangelands throughout the region. With this research under our belt, we can begin strategizing how to adapt our rangeland and grazing management practices to future conditions. The…

This webinar series builds on capacity within USDA to deliver science-based knowledge and practical information to farmers, ranchers, and forest landowners. Browse below for a list of archived events, and learn about upcoming, new webinars by joining our quarterly e-newsletter…

The USDA Northeast Climate Hub, in conjunction with the University of Maryland, hosted a regional workshop to address the USDA 'Building Block' approach to greenhouse gas mitigation. The workshop took place over the course of two days in March of 2016 at the National…

Bioenergy is renewable energy derived from biological sources, to be used for heat, electricity, or vehicle fuel. Biofuel derived from plant materials is among the most rapidly growing renewable energy technologies. Conversion of biomass to liquid fuel is a method utilizing…

Climate change has been impacting Tribal Nations. Tribal Nations, tribal ways of life and subsistence food gathering by changing ecosystems, rising sea-level, increasing in stream temperatures, and changing fish, plant, and wildlife populations. Explore the education materials…

Climate change projections indicate an increase in average temperature across the year, a change in growing season length, a persistent increase in greenhouse gas concentration, and a shift in precipitation from summer to winter; all of which will increase water…

Climate change projections indicate an increase in average temperature across the year, a longer growing season, and a shift in precipitation from summer to winter, these changes will increase summer water stress, whereas in Alaska increased precipitation is projected along with…