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Atmospheric Chemistry from the ATom Campaign

Map showing atmospheric CO2 measurements.

Measurements of atmospheric carbon dioxide concentration from flasks collected by the Medusa system during ATom-4 flights in 2018.

NASA's Atmospheric Tomography (ATom) campaign collected whole air samples and measurements of formaldehyde during round-the-world flights.

Mapping Methane Emissions Across California

Map of California's methane emissions.

Vista-CA provides locations of methane (CH4) emitting facilities and infrastructure in the State of California. In this figure, the distribution of digesters, feed lots, and dairies across the San Francisco Bay Area and Central Valley are shown.

The Vista-CA dataset provides locations of potential methane (CH4) emitting facilities and infrastructure across the state of California.

Thaw Slump Expansion in Alaska

Map showing thaw slump in Alaska.

Annual expansion of a thaw slump on the East Fork Chandalar River near the community of Venetie, Alaska, from 2008 through 2017. The erosion time series was created by digitizing data from ESRI base maps and Landsat 5, 7, and 8 images. The eroded area appears to be growing steadily, mostly to the east, with apparent limitation on growth to the north and south.

A time series of Landsat-derived maps shows the expansion of a thaw slump in Alaska.

Historical Solar-Induced Fluorescence of Chlorophyll

Global map of solar-induced fluorescence.

Solar-Induced Fluorescence derived along ERS-2 GOME orbital tracks on 1 July 1995.

Global estimates of solar-induced fluorescence (SIF) of chlorophyll from 1995 to 2003 are now available.

ORNL DAAC Hopes to See You at AGU

AGU 100 Advancing Earth and Space Science

See you at AGU, December 9-13 in San Francisco.

Several ORNL DAAC staff members will be attending the American Geophysical Union Meeting December 9-13, 2019, in San Fransisco, CA.

Daymet Developer Among the Web of Science Most Highly Cited

Dr. Peter Thornton in the field for NGEE Arctic

Dr. Peter Thornton leads the Modeling and Scale Integration Science Team for the Next-Generation Ecosystem Experiments (NGEE) Arctic project.

The lead developer of Daymet is recognized as a highly cited author in 2019.

Atmospheric Oxygen and CO2 Concentrations

AO2 Measurements

Example cross-sections of CO2, O2, and APO (O2 + 1.1 * CO2) measured by AO2 (interpolated flight track data) and the Medusa flask sampler (filled circles) during the Pacific southbound flights of ATom-4 in April and May 2018.

Data collected by the Airborne Oxygen Instrument (AO2) during the Atmospheric Tomography (ATom) airborne campaigns are now available.

Seasonality of Photosynthetic Performance

SIF for CLM Simulation Year 2010

Simulated and observed seasonal patterns of canopy SIF (740 nm) for (a, c) absolute SIF and (b, d) normalized canopy SIF for CLM simulation year 2010. Both a satellite SIF product (GOME-2) and the PhotoSpec measurements are included for comparison.

Three related datasets from the Carbon Monitoring System (CMS) program describe year-round photosynthetic activity in a conifer forest.

Pre-Fire Ecosystem Classifications in Burned Area

Great Slave Lake

Ecosystem map for the Great Slave Lake area, Northwest Territories, Canada, for the period 1997-2011.

ABoVE researchers compiled a map of ecosystem states prior to the 2014 & 2015 fires in the Northwest Territories, Canada.

High-resolution Biomass for Northwestern Forests

Aboveground Biomass

Forest aboveground biomass in megagrams per hectare for the year 2016.

Annual maps of aboveground biomass are available for forests in Washington, Oregon, Idaho, and western Montana, USA.

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