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Laboratory Analyzed Atmospheric Trace Gas and Isotope Measurements

Submitted by ORNL DAAC Staff on 2021-07-15
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Collection locations of atmospheric carbon dioxide concentration from flasks collected by the Medusa system during ATom-4 flights in 2018.

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Laboratory analysis of atmospheric chemistry from flasks collected during airborne campaigns conducted by NASA's ATom Mission.
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Oxygen and CO2 Measurements from the NCAR AO2 Instrument

Submitted by ORNL DAAC Staff on 2021-07-15
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The AO2 instrument used to collect airborne Oxygen and Carbon Dioxide measurements on HIPPO flights from 2009 through 2011.

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This dataset provides in situ atmospheric oxygen and carbon dioxide concentrations measured during airborne campaigns conducted by NASA's ATom mission.
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Comparison of In-Situ Measurements from NASA Airborne Campaigns

Submitted by ORNL DAAC Staff on 2020-07-16
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Left: The DLR Falcon used for the SALTRACE 2013 and the A-LIFE 2017 campaigns. Right: The NASA DC-8 aircraft used during the ATom missions sitting at the Pago Pago International Airport, American Samoa.

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A new dataset from the Atmospheric Tomography Mission (ATom) compares airflow and aerosol particles.

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.

ATom Compiles Flask Data from 2009 to 2018

Submitted by ORNL DAAC Staff on 2020-05-18
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Horizontal (left) and vertical (right) distribution of airborne flask sample locations identified as being of stratospheric origin. Thin dashed black lines on the map illustrate the flight tracks of all 9 campaigns of the 3 airborne projects. Symbols indicate the campaigns during which the stratospheric samples were collected, and colors show the potential temperature at which the sample was taken.

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A new dataset from the Atmospheric Tomography Mission compiles measurements of mean age of air.

New Instrument Data From ATom

Submitted by ORNL DAAC Staff on 2020-04-06
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The UCATS system is three different instruments in one enclosure: a two-channel chromatograph with electron capture detectors (one measures N2O and SF6, the other measures CH4, H2 and CO), a tunable diode laser instrument for H2O, and a dual-beam O3 photometer.

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A new dataset was collected using the Unmanned Aircraft Systems (UAS) Chromatograph for Atmospheric Trace Species (UCATS).