Skip to main content

DAAC Home > Get Data > Field Campaigns > Carbon in Arctic Reservoirs Vulnerability Experiment (CARVE) > Data Files

CARVE: L2 Atmospheric Gas Concentrations, Airborne Flasks, Alaska, 2012-2015


DatasetCARVE: L2 Atmospheric Gas Concentrations, Airborne Flasks, Alaska, 2012-2015
Release date2016-11-17
Time period2012-05-23 to 2015-11-12

Usage Metrics

CountEarliest DateLatest DateData Usage
Downloads92017-01-222017-11-0650 total files downloaded


This data set provides atmospheric carbon dioxide (CO2), methane (CH4), carbon monoxide (CO), molecular hydrogen (H2), nitrous oxide (N2O), sulfur hexafluoride (SF6), and other trace gas mole fractions (i.e. "concentrations") from airborne campaigns over the Alaskan and Canadian Arctic for the Carbon in Arctic Reservoirs Vulnerability Experiment (CARVE). The CARVE flight campaigns took place from 2012 to 2015 between the months of March and November to enable investigation of both seasonal and inter-annual variability in atmospheric gas abundances. The data were derived from laboratory measurements of whole air samples collected by a Programmable Flask Package (PFP) onboard the CARVE aircraft. Air samples were collected at strategic intervals to coincide with the overflight of a ground site of interest, or when interesting geophysical conditions were encountered. While most of these samples were collected near the surface in the planetary boundary layer (PBL), on almost every flight samples were also collected in the free troposphere. A minimum of 12 flask samples were collected per flight. Whole air samples collected in the PFPs were analyzed on automated systems at the NOAA Earth System Research Laboratory (ESRL) Global Monitoring Division in Boulder, CO, which also analyzes samples from the NOAA/ESRL Global Greenhouse Gas Reference Network. The measurements included in this data set are crucial for understanding changes in Arctic carbon cycling and the potential threats posed by thawing of Arctic permafrost.

Dataset documentation


Download citation from Datacite
Crosscite Citation Formatter
Sweeney, C., J.B. Miller, A. Karion, S.J. Dinardo, and C.E. Miller. 2016. CARVE: L2 Atmospheric Gas Concentrations, Airborne Flasks, Alaska, 2012-2015. ORNL DAAC, Oak Ridge, Tennessee, USA.

See our Data Citations and Acknowledgements policy for more information.

Data Files

Sign in to download dataset files.

Data File (Granule)File SizeDatesLatitudeLongitude 5.0MB 2012-05-23 to 2012-10-02 71.50N to 60.32N144.05W to 164.39W 5.1MB 2013-04-02 to 2013-10-26 71.28N to 42.76N106.29W to 166.93W 5.1MB 2014-04-24 to 2014-11-09 71.28N to 35.20N118.97W to 167.48W 7.0MB 2015-02-04 to 2015-11-12 71.29N to 35.15N118.85W to 167.38W

Companion Files

Expand for companion files
Toggle Companion Files

Sign in to download companion files.

Dataset has 1 companion files.

  • CARVE_L2_Flask.pdf

Dataset has 1 browse image file.

Advanced Data Access through THREDDS Data Sever