Why is climate change happening and what are the causes?
There are many “natural” and “anthropogenic” (human-induced) factors that contribute to climate change. Climate change has always happened on Earth, which is clearly seen in the geological record; it is the rapid rate and the magnitude of climate change occurring now that is of great concern worldwide. Greenhouse gases in the atmosphere absorb heat radiation. Human activity has increased greenhouse gases in the atmosphere since the Industrial Revolution, leading to more heat retention and an increase in surface temperatures. Atmospheric aerosols alter climate by scattering and absorbing solar and infrared radiation and they may also change the microphysical and chemical properties of clouds. Finally, land-use changes, such as deforestation have led to changes in the amount of sunlight reflected from the ground back into space (the surface albedo).
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Changing Arctic Ecosystems: Updated forecast: Reducing carbon dioxide (CO2) emissions required to improve polar bear outlook
The Arctic is warming faster than other regions of the world due to the loss of snow and ice, which increases the amount of solar energy absorbed by the region. The most visible consequence has been the rapid decline in sea ice over the last 3 decades-a decline projected to bring long ice-free summers if greenhouse gas (GHG) emissions are not...
Oakley, Karen L.; Atwood, Todd C.; Mugel, Douglas N.; Rode, Karyn D.; Whalen, Mary E.
Climate change: evaluating your local and regional water resources
The BCM is a fine-scale hydrologic model that uses detailed maps of soils, geology, topography, and transient monthly or daily maps of potential evapotranspiration, air temperature, and precipitation to generate maps of recharge, runoff, snow pack, actual evapotranspiration, and climatic water deficit. With these comprehensive environmental inputs...
Flint, Lorraine E.; Flint, Alan L.; Thorne, James H.
Landsat Surface Reflectance Climate Data Records
Landsat Surface Reflectance Climate Data Records (CDRs) are high level Landsat data products that support land surface change studies. Climate Data Records, as defined by the National Research Council, are a time series of measurements with sufficient length, consistency, and continuity to identify climate variability and change. The U.S....
U.S. Geological Survey climate and land use change science strategy: a framework for understanding and responding to global change
The U.S. Geological Survey (USGS), a nonregulatory Federal science agency with national scope and responsibilities, is uniquely positioned to serve the Nation’s needs in understanding and responding to global change, including changes in climate, water availability, sea level, land use and land cover, ecosystems, and global biogeochemical...
Burkett, Virginia R.; Kirtland, David A.; Taylor, Ione L.; Belnap, Jayne; Cronin, Thomas M.; Dettinger, Michael D.; Frazier, Eldrich L.; Haines, John W.; Loveland, Thomas R.; Milly, Paul C.D.; Robert, S.; Maule, Alec G.; McMahon, Gerard; Striegl, Robert G.
Consequences of land use and land cover change
The U.S. Geological Survey (USGS) Climate and Land Use Change Mission Area is one of seven USGS mission areas that focuses on making substantial scientific "...contributions to understanding how Earth systems interact, respond to, and cause global change". Using satellite and other remotely sensed data, USGS scientists monitor patterns of land...
Slonecker, E. Terrence; Barnes, Christopher; Karstensen, Krista; Milheim, Lesley E.; Roig-Silva, Coral M.
Changing Arctic ecosystems - measuring and forecasting the response of Alaska's terrestrial ecosystem to a warming climate
The Arctic Coastal Plain of northern Alaska is a complex landscape of lakes, streams, and wetlands scattered across low relief tundra that is underlain by permafrost. This region of the Arctic has experienced a warming trend over the past three decades, leading to thawing of on-shore permafrost and the disappearance of sea ice at an unprecedented...
Pearce, John M.; DeGange, Anthony R.; Flint, Paul L.; Fondell, Tom F.; Gustine, David D.; Holland-Bartels, Leslie E.; Hope, Andrew G.; Hupp, Jerry W.; Koch, Joshua C.; Schmutz, Joel A.; Talbot, Sandra L.; Ward, David H.; Whalen, Mary E.
Polar bear and walrus response to the rapid decline in Arctic sea ice
The Arctic is warming faster than other regions of the world due to positive climate feedbacks associated with loss of snow and ice. One highly visible consequence has been a rapid decline in Arctic sea ice over the past 3 decades - a decline projected to continue and result in ice-free summers likely as soon as 2030. The polar bear (Ursus...
Oakley, Karen L.; Whalen, Mary E.; Douglas, David C.; Udevitz, Mark S.; Atwood, Todd C.; Jay, C.
The concept of geologic carbon sequestration
Duncan, Douglas W.; Morrissey, Eric A.
Assessing carbon stocks, carbon sequestration, and greenhouse-gas fluxes in ecosystems of the United States under present conditions and future scenarios
The Energy Independence and Security Act of 2007 (EISA) requires the U.S. Department of the Interior (DOI) to develop a methodology and conduct an assessment of carbon storage, carbon sequestration, and greenhouse-gas (GHG) fluxes in the Nation's ecosystems. The U.S. Geological Survey (USGS) has developed and published the methodology (U.S....
Zhu, Zhi-Liang; Stackpoole, Sarah
A Warming Climate Could Alter the Ecology of the Deepest Lake in the United States
Warming air temperature is predicted to change water temperature and water column mixing in Oregon’s Crater Lake over the next several decades, potentially impacting the clarity and health of the iconic lake, according to a U.S. Geological Survey report released today.
Ancient Permafrost Quickly Transforms to Carbon Dioxide upon Thaw
Researchers from the U.S. Geological Survey and key academic partners have quantified how rapidly ancient permafrost decomposes upon thawing and how much carbon dioxide is produced in the process.
New Heights of Global Topographic Data Will Aid Climate Change Research
The U.S. Geological Survey announced today that improved global topographic (elevation) data are now publicly available for North and South America, Pacific Islands, and northern Europe. Similar data for most of Africa were previously released by USGS in September.
Carbon Storage in U.S. Eastern Ecosystems Helps Counter Greenhouse Gas Emissions Contributing to Climate Change
On the one-year anniversary of President Obama’s Climate Action Plan, Secretary of the Interior Sally Jewell today released a new report showing that forests, wetlands and farms in the eastern United States naturally store 300 million tons of carbon a year (1,100 million tons of CO2 equivalent).
Amazon Carbon Dynamics: Understanding the Photosynthesis-Climate Link
What controls the response of photosynthesis in Amazon tropical forests to seasonal variations in climate?
Arctic Now Traps 25 Percent of World's Carbon -- But That Could Change
The arctic could potentially alter the Earth's climate by becoming a possible source of global atmospheric carbon dioxide. The arctic now traps or absorbs up to 25 percent of this gas but climate change could alter that amount, according to a study published in the November issue of Ecological Monographs.
"Carbon farm" project will study ways to capture atmospheric CO2
Imagine a new kind of farming in the Sacramento-San Joaquin River Delta - "carbon-capture" farming, which traps atmospheric carbon dioxide and rebuilds lost soils.
Abrupt Climate Change: Causes and Ecosystem Responses
U.S. Geological Survey (USGS) scientists who study trends in climate change will be presenting the results from new studies at a workshop held in Pacific Grove, California, May 13-16, 2007.
USGS Climate Connections: Questions from Colorado
America has questions about climate change, and the USGS has real answers. In this episode of Climate Connections, USGS scientists answer questions gathered from downtown Denver, Colorado. Questions include:
Climate Connections: Questions from Washington, DC
America has questions about climate change, and the USGS has real answers. In this episode of Climate Connections, USGS scientists answer questions gathered from students at H.D. Woodson High School in Washington, DC. Questions include:
- If you could tell the public one thing about climate change, what would it be?
- Does climate change impact humans or
Climate Connections: Questions from Glacier National Park, MT (episode 4)
America has questions about climate change, and the USGS has real answers. In this episode of Climate Connections, USGS scientists answer questions gathered from the beautiful Glacier National Park in Montana. Questions include:
- When I come back in ten years, what will I see in Glacier National Park?
- How is climate change impacting the
Climate Connections: Questions from Puerto Rico
America has questions about climate change, and the USGS has real answers. In this episode of Climate Connections, USGS scientists answer questions gathered from Puerto Rico. Questions include:
- Why has the rainy season been so long in Puerto Rico?
- How is global warming impacting the island of Puerto Rico?
- What are solar storms and are they
Climate Connections: Questions from North and South Carolina
America has questions about climate change, and the USGS has real answers. In this episode of Climate Connections, USGS scientists answer questions gathered from North and South Carolina.
USGS Public Lecture Series: Climate Change 101
Climate change is an issue of increasing public concern because of its potential effects on land, water, and biological resources. In the next several years, the United States will be challenged to make management and policy decisions as well as develop adaptation and mitigation strategies that will require anticipating the effects of a changing climate and its impacts on
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USGS Public Lecture Series: Watching Nature's Clock: A Citizen-Scientist Effort to Track Seasonal Signs of Climate Change
A new USGS program, the USA National Phenology Network, is recruiting tens of thousands of volunteers to team up with scientists to help track the effects of climate on seasonal patterns of plant and animal behavior. Come learn how you can contribute to this new national effort, by getting outside, and observing and recording flowering, fruiting and other seasonal events.
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Can We Move Carbon from the Atmosphere and into Rocks?
A new method to assess the Nation's potential for storing carbon dioxide in rocks below the earth's surface could help lessen climate change impacts. The injection and storage of liquid carbon dioxide into subsurface rocks is known as geologic carbon sequestration.
USGS scientist Robert Burruss discusses this new methodology and how it can help mitigate climate
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Smoke Stack - Air Pollution
An example of human activities that impact the earth's atmosphere.
Farming Carbon to Help the Atmosphere and the Land
Long-standing farming practices in California's Sacramento-San Joaquin River Delta expose fragile peat soils to wind, rain and cultivation, emit carbon dioxide (CO2) and cause land subsidence. To capture or contain the carbon, farmers would ‘grow’ wetlands. In doing so, they would begin to rebuild the Delta's unique peat soils, take CO2 out of the atmosphere, ease pressure
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Erosion and climate change along Alaska's Arctic Coast
Erosion and climate change along Alaska's Arctic Coast