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ACT-America

Greenhouse Gases Measured from Instrumented Communication Towers

Submitted by ORNL DAAC Staff on 2020-10-05
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The communication tower at the Wessington, South Dakota site. This site was instrumented from January of 2017 to September of 2019.

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Level 1 atmospheric greenhouse gas concentrations are available for towers across the central and eastern USA.

ACT-America: L3 Integrated Measurements and 2019 Data

Submitted by ORNL DAAC Staff on 2020-07-15
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ACT-America 2019 summer airborne campaign showing the flight paths for the two aircrafts and location of ground towers. Flights were concentrated on three study domains: northeast, south-central, and midwest regions of the United States.

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A new version of merged in situ atmospheric trace gases and flask data from the Atmospheric Carbon and Transport-America project is now available.

THREDDS NetCDF Subsetting Service Bug Fixed

Submitted by ORNL DAAC Staff on 2020-06-24
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Unidata's THREDDS Data Server (TDS) is a web server that provides metadata and data access for scientific datasets, using a variety of remote data access protocols.

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A bug has been fixed in the THREDDS Data Server (TDS) NetCDF Subsetting Service (NCSS) that may, in rare cases, have returned incorrect results.

ACT-America Atmospheric Data Updated

Submitted by ORNL DAAC Staff on 2019-03-25
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Photograph of the Midwestern United States taken during a Fall 2017 ACT-America flight. A storm system had recently brought a blanket of snow to the region. (Image credit: NASA/Bing Lin)

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Atmospheric gas data from all four seasonal flight campaigns (Summer 2016, Winter 2017, Fall 2017, and Spring 2018) are now available from the ACT-America mission.