| CA DWR |
California Department of Water Resources |
| CISESS |
Cooperative Institute for Satellite Earth System Studies |
| CMIP5 |
Coupled Model Intercomparison Project Phase 5 |
| CO2 |
carbon dioxide |
| CONUS |
contiguous United States |
| COOP |
Cooperative Observer Network |
| DC |
District of Columbia |
| EF |
Enhanced Fujita Scale |
| F |
Fahrenheit |
| F |
Fujita Scale |
| FEMA |
Federal Emergency Management Agency |
| GCM |
global climate model |
| GCRA |
Global Change Research Act |
| GHCN-Daily |
Global Historical Climatology Network–Daily |
| GHCN-Monthly |
Global Historical Climatology Network–Monthly |
| GLERL |
Great Lakes Environmental Research Laboratory |
| GMSL |
global mean sea level |
| hPa |
hectopascal |
| IPCC AR5 |
Intergovernmental Panel on Climate Change Fifth Assessment Report |
| mph |
miles per hour |
| MRCC |
Midwestern Regional Climate Center |
| NADA |
North American Drought Atlas |
| NCA |
National Climate Assessment |
| NCA3 |
Third National Climate Assessment |
| NCA4 |
Fourth National Climate Assessment |
| NCEI |
National Centers for Environmental Information |
| nClimDiv |
NOAA NCEI’s Climate Divisional Dataset |
| NEMAC |
National Environmental Modeling and Analysis Center |
| NESDIS |
National Environmental Satellite, Data, and Information Service |
| NFIP |
National Flood Insurance Program |
| NOAA |
National Oceanic and Atmospheric Administration |
| NOS |
National Ocean Service |
| NPS |
National Park Service |
| NRCS |
Natural Resources Conservation Service |
| NSIDC |
National Snow and Ice Data Center |
| NWCC |
National Water and Climate Center |
| NWIS |
National Water Information Service |
| NWS |
National Weather Service |
| PDSI |
Palmer Drought Severity Index |
| PRCCC |
Puerto Rico Climate Change Council |
| RCP |
Representative Concentration Pathway |
| SLR |
sea level rise |
| SNOTEL |
Snow Telemetry (and Snow Course) data |
| SWE |
snow water equivalent |
| TAF |
thousand acre feet |
| USACE |
U.S. Army Corps of Engineers |
| USBR |
U.S. Bureau of Reclamation |
| USDA |
U.S. Department of Agriculture |
| USGS |
U.S. Geological Survey |
| WCRP |
World Climate Research Programme |
| WGCM |
Working Group on Coupled Modeling |