Acronyms, Abbreviations, and Units

AAFC Agriculture and Agri-Food Canada
ACEP Agricultural Conservation Easement Program
ACT-America Atmospheric Carbon and Transfer–America program
AFOLU agriculture, forestry, and other land use
AIM atmospheric inverse modeling
ALOHA A Long-Term Oligotrophic Habitat Assessment
ALT active layer thickness
ALU agriculture and land use
ARCTAS Arctic Research of the Composition of the Troposphere from Aircraft and Satellites
ARPA-E Advanced Research Projects Agency–Energy (DOE)
ARRA American Recovery and Reinvestment Act
ARS Agricultural Research Service (USDA)
ATom Atmospheric Tomography Mission
BATS Bermuda Atlantic Time-series Study
BCS Beaufort and Chukchi Seas
BECCS bioenergy carbon capture and storage
BS Bering Sea
C4MIP Coupled Climate–Carbon Cycle Model Intercomparison Project
CAA Canadian Arctic Archipelago
CAA U.S. Clean Air Act
CAFC Company Average Fuel Consumption
CAFE corporate average fuel economy
CAIT Climate Access Indicators Tool
CalNex California Research at the Nexus of Air Quality and Climate Change
CAM crassulacean acid metabolism
CAMS Copernicus Atmospheric Monitoring Service
CanSIS Canadian Soil Information Service
CARAFE CARbon Atmospheric Flux Experiment
CARVE Carbon in Arctic Reservoirs Vulnerability Experiment
CCAFS-MOT Climate Change, Agriculture, and Food Security–Mitigation Options Tool
CCGT combined-cycle gas turbine
CCIWG Carbon Cycle Interagency Working Group (USGCRP)
CCS carbon capture and storage
CCSC Central California Current System
CCSN Northern California Current System
CCSS Southern California Current System
CDIAC Carbon Dioxide Information Analysis Center
CDU carbon dioxide utilization
CEC Commission for Environmental Cooperation
CEMAC Clean Energy Manufacturing Analysis Center
CFC chlorofluorocarbons
CFE community forest enterprise
CMIP Coupled Model Intercomparison Project
CONUS conterminous United States
CP certificate of possession
CPP U.S. Clean Power Plan
CRP Conservation Reserve Program
CSKT Confederated Salish and Kootenai Tribes
CSSR Climate Science Special Report
DIC dissolved inorganic carbon
DISCOVER-AQ Deriving Information on Surface Conditions from Column and Vertically Resolved Observations Relevant to Air Quality
DOC U.S. Department of Commerce
DOC dissolved organic carbon
DOD U.S. Department of Defense
DOE U.S. Department of Energy
DOI U.S. Department of the Interior
DOM dissolved organic matter
DOS U.S. Department of State
DOT U.S. Department of Transportation
E10 10% blended ethanol
E3MC Energy, Emissions and Economy Model for Canada
ECBM enhanced coal bed methane recovery
EDCM Erosion-Deposition-Carbon-Model
EERE Energy Efficiency and Renewable Energy (DOE)
EEZ Exclusive Economic Zone
EIA U.S. Energy Information Administration
EISA Energy Independence and Security Act
ENSO El Niño-Southern Oscillation
EOR enhanced oil recovery
EPA U.S. Environmental Protection Agency
ESM Earth System Model
ESRL Earth System Research Laboratory (NOAA)
EU European Union
ExACT Ex-Ante Carbon-balance Tool
FACE Free-Air CO2 Enrichment
FAO Food and Agriculture Organization
FFC fossil fuel consumption
FIA Forest Inventory and Analysis
FLFL forestland remaining forestland
FOLU forestry and other land use
FTS Fourier Transform Spectrometer
FVS Forest Vegetation Simulator
GAK Gulf of Alaska
GCP Global Carbon Project
GCRA Global Change Research Act
GDP gross domestic product
GEMS General Ensemble Biogeochemical Modeling System
GeoCARB Geostationary Carbon Cycle Observatory
GHG greenhouse gas
GIS geographic information system
GMx Gulf of Mexico
GOM Gulf of Maine
GOSAT Greenhouse Gases Observing Satellite
GPP gross primary production
GRACEnet Greenhouse gas Reduction through Agricultural Carbon Enhancement network
GStL Gulf of St. Lawrence and Grand Banks
GWP global warming potential
HB Hudson Bay
HIAPER High-Performance Instrumented Airborne Platform for Environmental Research
HIPPO HIAPER Pole-to-Pole Observations
IAGOS In-service Aircraft for a Global Observing System
IAM integrated assessment model
IASI Infrared Atmospheric Sounding Interferometer
IEA International Energy Agency
ILAMB International Land Model Benchmarking
INFLUX Indianapolis Flux Experiment
INGAA Interstate Natural Gas Association of America
IPCC Intergovernmental Panel on Climate Change
IPCC AR5 Fifth Assessment Report of the IPCC; also WG1, WG2, WG3 – Working Groups 1–3
SGCR Subcommittee on Global Change Research (National Science and Technology Council, White House)
IQA Information Quality Act
ITC Investment Tax Credit
LCOE levelized cost of energy
LECZ low-elevation coastal zone
LEED Leadership in Energy and Environmental Design
LIDAR light detection and ranging
LS Labrador Shelf
LULC land use and land cover
LULUCF land use, land-use change, and forestry
MAB Mid-Atlantic Bight
MCI Mid-Continent Intensive
MIROC Model for Interdisciplinary Research on Climate
MODIS Moderate Resolution Imaging Spectroradiometer
MOPITT Measurements Of Pollution In The Troposphere
NAA North American Arctic
NAAC North American Atlantic Coast
NAAEC North American Agreement on Environmental Cooperation
NACP North American Carbon Program
NAO North Atlantic Oscillation
NAPC North America Pacific Coast
NASA National Aeronautics and Space Administration
NASEM National Academies of Sciences, Engineering, and Medicine
NCA National Climate Assessment
NCA3 Third National Climate Assessment
NCA4 Fourth National Climate Assessment
NCAR National Center for Atmospheric Research
NDC Nationally Determined Contributions
NDVI normalized difference vegetation index
NECB net ecosystem carbon balance
NEE net ecosystem exchange
NEMS National Energy Modeling System
NEON National Ecological Observatory Network
NEP net ecosystem production
NGHGI National Greenhouse Gas Inventory
NGO non-governmental organization
NICC National Indian Carbon Coalition
NIFA National Institute of Food and Agriculture (USDA)
NIST National Institute of Standards and Technology
NOAA National Oceanic and Atmospheric Administration
NPP net primary production
NRCS Natural Resources Conservation Service (USDA)
NSA North Slope of Alaska
NSF National Science Foundation
NWCA National Wetland Condition Assessment
NWI National Wetlands Inventory
OCO-2 Orbiting Carbon Observatory-2
ODIAC Open-source Data Inventory for Anthropogenic CO2
OECD Organisation for Economic Cooperation and Development
OM organic matter
OMB Office of Management and Budget (White House)
OPEC Organization of Petroleum Exporting Countries
OSTP Office of Science and Technology Policy (White House)
pCO2 partial pressure of CO2
PIC particulate inorganic carbon
POC particulate organic carbon
POM particulate organic matter
PPP purchasing power parity
PPR Prairie Pothole Region
PTC production tax credit
PUC public utilities commission
PV photovoltaic
RaCA Rapid Carbon Assessment
RCP Representative Concentration Pathway
RD&D research, development, and demonstration
RE renewable energy
RECCAP Regional Carbon Cycle Assessment and Progresses
REDD+ Reducing Emissions from Deforestation and Forest Degradation
RPR (also R/P) reserve-to-production ratio
RUBISCO ribulose-1,5-bisphosphate carboxylase oxygenase
SAB South Atlantic Bight
SCB Southern California Bight
SD standard deviation
SE standard error
SD standard deviation
SGCR Subcommittee on Global Change Research (National Science and Technology Council, White House)
SGP Southern Great Plains
SI International System of Units
SIF solar-induced fluorescence
SMR small mountainous river
SOC standard deviation
SOCCR1 First State of the Carbon Cycle Report
SOCCR2 Second State of the Carbon Cycle Report
SOM soil organic matter
SPRUCE Spruce and Peatland Responses Under Changing Environments
SRES Special Report on Emissions Scenarios (IPCC, 2000)
SS Scotian Shelf
SSP Shared Socioeconomic Pathway
SSURGO Soil Survey Geographic database
STATSGO State Soil Geographic database
TBM terrestrial biosphere model
TCCON Total Carbon Column Observing Network
TCU tribal colleges and universities
TOC/td> total organic carbon
TransCom Atmospheric Tracer Transport Model Intercomparison Project
UCAR University Corporation for Atmospheric Research
UHI urban heat island
UN United Nations
UNFCCC United Nations Framework Convention on Climate Change
USAID U.S. Agency for International Development
USDA U.S. Department of Agriculture
USFWS U.S. Fish and Wildlife Service
USGCRP U.S. Global Change Research Program
USGS U.S. Geological Survey
VOC volatile organic compound
WRI World Resources Institute

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