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Global Change Master Directory (GCMD)
ACT-America: L2 In Situ CO2, CO, and CH4 Concentrations from Towers, Eastern USA
Entry ID: ACTAMERICA-PICARRO_Ground_1568_1.1


Summary
Abstract: This dataset provides atmospheric carbon dioxide (CO2), carbon monoxide (CO), and methane (CH4) concentrations as measured on a network of instrumented communications towers operated by the Atmospheric Carbon and Transport-America (ACT-America) project. ACT-America's mission spans five years and includes five 6-week intensive field campaigns covering all 4 seasons and 3 regions of the central and eastern United States. Tower-based measurements began in early 2015 and are continuously collecting CO2, CO, and CH4 data to characterize ground-level (>100 m) carbon background conditions to support the periodic airborne measurement campaigns and transport modeling conducted by ACT-America. The towers are instrumented with infrared cavity ring-down spectrometer systems (CRDS; Picarro Inc.). Data are reported for the highest sampling port on each tower. The averaging interval standard deviation and uncertainty derived from periodic flask sample to in-situ measurement comparisons are provided. Complete tower location, elevation, instrument height, and date/time information are also provided.

Related URL
Link: View Related Information
Description: This link allows direct data access via Earthdata login


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Description: ORNL DAAC Data Set Documentation


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Description: Data set Landing Page DOI URL


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Description: ACT-America: L2 In Situ CO2, CO, and CH4 Concentrations from Towers, Eastern USA: ACTAMERICA-PICARRO_Ground.pdf


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Description: Figure 1: ACT-America 2016 campaign ground tower locations.


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Description: The THREDDS location for this Collection.

Geographic Coverage
 N: 44.05 S: 30.2  E: -76.42  W: -98.59

Data Set Citation
Version: 1.1


Temporal Coverage
Start Date: 2015-01-01
Stop Date: 2017-12-31


Science Keywords
ATMOSPHERE >ATMOSPHERIC CHEMISTRY >CARBON AND HYDROCARBON COMPOUNDS >CARBON DIOXIDE    [Definition]
ATMOSPHERE >ATMOSPHERIC CHEMISTRY >CARBON AND HYDROCARBON COMPOUNDS >CARBON MONOXIDE    [Definition]
ATMOSPHERE >ATMOSPHERIC CHEMISTRY >CARBON AND HYDROCARBON COMPOUNDS >METHANE    [Definition]
ATMOSPHERE >ATMOSPHERIC WATER VAPOR >WATER VAPOR PROFILES >WATER VAPOR MIXING RATIO PROFILES    [Definition]


ISO Topic Category
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
ENVIRONMENT


Platform
FIXED OBSERVATION STATIONS    [Information]


Instrument
Spectrometers    [Information]


Project
ACT-America >Atmospheric Carbon and Transport - America


Data Set Progress
COMPLETE


Data Center
THE OAK RIDGE NATIONAL LABORATORY (ORNL) DISTRIBUTED ACTIVE ARCHIVE CENTER (DAAC)    [Information]
Data Center URL: https://daac.ornl.gov/

Data Center Personnel
Name: NOT PROVIDED


Extended Metadata Properties
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Creation and Review Dates
Last DIF Revision Date: 2019-04-15



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