Calibration of the total carbon column observing network using aircraft profile data
Author:
Wunch D.,Toon G. C.,Wennberg P. O.,Wofsy S. C.,Stephens B. B.,Fischer M. L.,Uchino O.,Abshire J. B.,Bernath P.,Biraud S. C.,Blavier J.-F. L.,Boone C.,Bowman K. P.,Browell E. V.,Campos T.,Connor B. J.,Daube B. C.,Deutscher N. M.,Diao M.,Elkins J. W.,Gerbig C.,Gottlieb E.,Griffith D. W. T.,Hurst D. F.,Jiménez R.,Keppel-Aleks G.,Kort E.,Macatangay R.,Machida T.,Matsueda H.,Moore F.,Morino I.,Park S.,Robinson J.,Roehl C. M.,Sawa Y.,Sherlock V.,Sweeney C.,Tanaka T.,Zondlo M. A.
Abstract
Abstract. The Total Carbon Column Observing Network (TCCON) produces precise measurements of the column average dry-air mole fractions of CO2, CO, CH4, N2O and H2O at a variety of sites worldwide. These observations rely on spectroscopic parameters that are not known with sufficient accuracy to compute total columns that can be used in combination with in situ measurements. The TCCON must therefore be calibrated to World Meteorological Organization (WMO) in situ trace gas measurement scales. We present a calibration of TCCON data using WMO-scale instrumentation aboard aircraft that measured profiles over four TCCON stations during 2008 and 2009. The aircraft campaigns are the Stratosphere-Troposphere Analyses of Regional Transport 2008 (START-08), which included a profile over the Park Falls site, the HIAPER Pole-to-Pole Observations (HIPPO-1) campaign, which included profiles over the Lamont and Lauder sites, a series of Learjet profiles over the Lamont site, and a Beechcraft King Air profile over the Tsukuba site. These calibrations are compared with similar observations made during the INTEX-NA (2004), COBRA-ME (2004) and TWP-ICE (2006) campaigns. A single, global calibration factor for each gas accurately captures the TCCON total column data within error.
Publisher
Copernicus GmbH
Reference40 articles.
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