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Mechanistic Soil Nitrogen Module for CMAQ

Soil nitrous oxide emissions.

Soil nitrous oxide emissions on a monthly average basis for July 2011 estimated with the mechanistic scheme.

A new model dataset improves the timing and spatial distribution of estimates of soil nitrogen emissions.

Uncertainty in Arctic Carbon Stocks and Fluxes

Uncertainty of carbon stock across the ABoVE domain.

Uncertainty in soil carbon stocks and gross primary productivity across the ABoVE domain.

Work from NASA's ABoVE compared model outputs to estimate the uncertainty in six components of the carbon cycle across Alaska and Canada.

Remote Cameras Measure Snow Conditions

Snow depth measurement

A remote camera image showing the snow stake at Plot 15 of the Jaeger Mesa/Rambler Mine study area.

Automated digital cameras provide a record of snow conditions in Alaska's Dall sheep habitat.

Does Boreal Wildfire Release "Old" Carbon?

Radiocarbon concentration over time according to soil depth and stand age

Radiocarbon concentration (delta14C) in the atmosphere over time, showing the bomb peak in 1966 (red dotted line) and theoretical positions of delta14C of soil depth increments (points).

Researchers with NASA's ABoVE field campaign measured soil and forest stand age at burned sites in Canada's Northwest Territories.

Carbon Sequestration Potential for Maryland

Maximum forest aboveground biomass

Carbon sequestration potential within the state of Maryland, defined as 95% of maximum forest aboveground biomass (Mg/ha), simulated after 500 years of succession.

A new dataset maps the aboveground biomass of Maryland's forests and estimates their potential for future carbon sequestration.

Daymet 2018 Data Now Available

Daymet provides high-resolution surface meteorology data for North America.

Daymet provides high-resolution surface meteorology data for North America. The figure shows annual data for the year 2018; Left: Mean maximum daily temperature, Middle: Total precipitation, Right: Mean minimum daily temperature. Daymet data is archived and distributed by the ORNL DAAC.

Daymet weather and climate data for North America are now available for the years 1980 - 2018.

Merged Data from the Atmospheric Tomography Mission

ATom flights

Generalized overview of ATom flights. During each of the four campaigns, ATom flights originated from California, flew south over the Pacific Ocean, then north to the western Arctic, southwest to New Zealand, east to Chile and the Atlantic Ocean, north to Greenland, and returned to California across North America. During flights, the aircraft continuously profiled the atmosphere from 0.2 to 12 km altitude.

The Atmospheric Tomography Mission (ATom) has released multi-instrument merged data from all four flight campaigns spanning from 2016 - 2018.

MODIS Collection 6 Phenology and Other Updates

MODIS pixel quality for Paradise, CA

Periodic fires near Paradise, California (in 2001, 2008, and 2018) observed from MODIS as recorded in the newly released MCD64A1 product: MODIS/Terra and Aqua Burned Area Monthly L3.

Several updates are now available for MODIS Land Products, including the addition of the Collection 6 phenology product.

ACT-America L2 Flask Data Updated

Flask air sample locations

Locations of ACT-America flask air samples from all flight data available to date.

Atmospheric trace gas concentrations collected by the ACT-America project have been updated to include Fall 2017 and Spring 2018 flights.

AirSWOT Ka-band Radar from ABoVE

AirSWOT radar products from ABoVE

Example of AirSWOT radar products in ABoVE Projection at 3.6 m resolution, for a flight over the ABoVE C grid Ch065v034. Left: Shape for backscatter image. Middle: Backscatter magnitude shows bright reflection in the near range and no returns, yielding regions of no data, in the far range. Right: Derived elevation product.

The ABoVE project has released data from AirSWOT flights in Summer 2017 collected over Alaska and Canada.

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