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River Ice Breakup and Freeze-up Stages from ABoVE

Freeze-up stages.

Examples of freeze-up stages in the Grayling study area. Landsat images are displayed as color composites (R: SWIR, G: NIR, B: green), where water appears dark blue and snow/ice appears light blue.

Estimates of river ice breakup and freeze-up stages along selected reaches of the Yukon and Tanana Rivers in the Yukon River Basin in interior Alaska from 1972-2016 are now available from ABoVE.

MODIS-derived Forest Radiation Data for Brazil

Average daily net radiation.

Average daily net radiation for the 8-day timestep, 2000-03-29 to 2000-04-06, in the upper Xingu River Basin, Mato Grosso, Brazil, study area.

Three MODIS products were used to derive daily average land surface net radiation for the forests of the upper Xingu River Basin in Mato Grosso, Brazil.

Hydrogen Oxide Data from ATom

The DC-8 cockpit.

View of the DC-8 cockpit in flight. Credit: NASA/Michael Prather

Data collected by the Airborne Tropospheric Hydrogen Oxides Sensor (ATHOS) instrument during the Atmospheric Tomography (ATom) Mission is now available.

Forest Carbon Across the Western USA

Above ground live tree carbon.

Annual estimates of aboveground live tree carbon (g/m2) as simulated with the Community Land Model (4.5) at 1/24-degree (4 km x 4 km) resolution.

The North American Carbon Program provides new, annual, estimated forest carbon budgets for the Western USA from 1979 to 2099.

CO2 Flux for the Northern Gulf of Mexico

pCO2 for the northern Gulf of Mexico.

Monthly composite images of satellite-derived pCO2 for the northern Gulf of Mexico, corresponding to each of the cruises for which observational data were acquired. Black pixels in the images correspond to areas that were masked (e.g., land, clouds), and the dotted lines represent the 45 and 200 m isobaths.

Monthly estimates of ocean surface pCO2 and air-sea flux of CO2 are available from NASA's Carbon Monitoring System.

Active Layer Thickness Across Northern Alaska

Active layer thickness.

Active layer thickness product (ALT) at 30 m resolution near Barrow (Utqiagvik), Alaska.

New data from NASA's Arctic-Boreal Vulnerability Experiment (ABoVE) provide estimates of active layer thickness from airborne radar.

Soil Temperature Profiles for Interior Alaska

USArray measurement sites

USArray measurement sites in Alaska. Sites are labeled with site ID and maximum measurement depth and color-coded by mean annual ground temperature (MAGT in degrees C) of the deepest sensor measurements. Data are omitted for sites disrupted by bears.

Soil temperature data were collected at Alaskan USArray seismic monitoring sites from 2016-2018.

Highlights from the Literature

Asclepias syriaca (common milkweed)

Asclepias syriaca (common milkweed) relies on pollinators for movement of its pollen, and evidence suggests that its populations are declining. Image courtesy of Pixabay.

Daymet daily surface weather and climatological summaries have been cited in nearly 300 peer-reviewed articles. Read about how this popular data product is used in research.

Aerosol Data from the ATom Mission

The ATom aircraft

The ATom aircraft prepares to depart from Punta Arenas in southern Chile on October 14, 2017. During ATom-3, the science team flew over Antarctica and below the ozone hole before continuing on their journey north over the Atlantic Ocean to Greenland and returning to California.

Data collected by the Aerosol Microphysical Properties (AMP) instrument during the Atmospheric Tomography (ATom) Mission is now available.

Monthly Hydrological Fluxes for ABoVE Domain

Average annual precipitation.

Average annual precipitation for 1979-2010 at 0.25 degree resolution across the Arctic Boreal Vulnerability Experiment study domain.

Estimated historical water balance climatologies are available for the Arctic-Boreal Vulnerability Experiment (ABoVE) study domain.

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