The eddy covariance site at Barrow, Alaska.
A new CARVE dataset provides 2011-2015 flux data from three eddy covariance tower sites in Alaska.
Ecological landscape sections from Landscape Level Ecological Mapping of Northern Alaska (2014 Update). From Jorgenson and Grunblatt, 2013.
Ecosystem types, vegetation, and land cover maps are provided in a new data set from NASA's ABoVE campaign.
Land surface fractional open water for the extended ABoVE domain for Julian days 171-180 of 2002 depicted with a black to white gradient.
Land surface fractional open water cover maps are provided for the pan-Arctic and the ABoVE study domains.
Frost-boil vegetation plot at Franklin Bluffs in northern Alaska
A new dataset provides baseline information on vegetation and soils at 117 study plots on Arctic frost-boils.
Estimated continental-scale Net Ecosystem Exchange (NEE) of CO2 in February 2012.
AirMOSS data provide daily estimates of Net Ecosystem Exchange (NEE) at seven Fluxnet sites, and hourly and monthly estimates for the whole North American region.
Flask sampling system for aircraft measurements. Left: Programmable Flash Package (PFP) containing 12 flasks. Right: Programmable Compressor Package (PCP) containing pumps for pressurizing the flasks. (Image courtesy: http://www.esrl.noaa.gov/gmd/ccgg/aircraft/sampling.html)
The CARVE campaign analyzed whole-air samples from aircraft and a 32m tower above Alaska.
A massive sandstorm engulfs Riyadh, the capital of Saudi Arabia, on March 10, 2009. (Credit: Associated Press)
The Fertile Crescent has been steadily drying since 1931, and recent changes have exacerbated the trend.
Frost clings to an eddy covariance tower in Barrow, Alaska. The sensors measure methane emissions year round and are equipped with deicers to prevent them from malfunctioning in the Arctic's frigid temperatures. The tower also measures other meteorological variables, including air temperature, humidity, soil temperature, and soil moisture. (Courtesy S. Losacco)
Scientists with CARVE track methane emission in Alaska all year round.
Mean remotely-sensed active layer thickness (cm) near Barrow, Alaska. Data from http://dx.doi.org/10.3334/ORNLDAAC/1266.
Measuring changes in the thickness of the soil's active layer provides insight into climate change in the Arctic.
VPRM annual integrated respiration for 2002 provided in g C/m2/yr. Black areas are outside the study domain (Hilton et al., 2014).
A new data set provides parameters for the Vegetation Photosynthesis Respiration Model (VPRM) for 65 flux sites.
