Abstract
Atmospheric column-averaged mole fractions of carbon dioxide (XCO 2) at 53 locations around the world were derived from aircraft measurements covering the altitude range of about 1-10 km. We used CO 2 vertical profile measurements from three major carbon cycle programs, a global climatological data set of air number density profiles and tropopause height for calculating XCO2 for the period of 2007-2009. Vertical profiles of the CO2 mixing ratio are complemented by tall tower data up to 400m from the earth's surface and by simulated profiles in the stratosphere from a chemistry-transport model. The amplitude of the seasonal cycle of calculated XCO2 values shows clear latitudinal dependence, and the amplitude decreases from about 10 ppm at high latitudes in the Northern Hemisphere to at most 2 ppm in the tropics and the Southern Hemisphere. The uncertainties of XCO2 were estimated from assumptions about CO 2 profiles for each flight. Typically, uncertainties were less than 1 ppm; thus, this data set is within the level of uncertainty needed for primary validation of XCO2 measurements by the Greenhouse gases Observing SATellite (GOSAT) and by future satellite missions for monitoring greenhouse gases.
| Original language | English |
|---|---|
| Pages (from-to) | 5265-5275 |
| Number of pages | 11 |
| Journal | Atmospheric Chemistry and Physics |
| Volume | 13 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 2013 |
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- Atmospheric Science
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Atmospheric column-averaged mole fractions of carbon dioxide at 53 aircraft measurement sites. / Miyamoto, Yuki; Inoue, M.; Morino, I.; Uchino, O.; Yokota, T.; Machida, T.; Sawa, Y.; Matsueda, H.; Sweeney, C.; Tans, P. P.; Andrews, A. E.; Patra, P. K.
In: Atmospheric Chemistry and Physics, Vol. 13, No. 10, 2013, p. 5265-5275.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Atmospheric column-averaged mole fractions of carbon dioxide at 53 aircraft measurement sites
AU - Miyamoto, Yuki
AU - Inoue, M.
AU - Morino, I.
AU - Uchino, O.
AU - Yokota, T.
AU - Machida, T.
AU - Sawa, Y.
AU - Matsueda, H.
AU - Sweeney, C.
AU - Tans, P. P.
AU - Andrews, A. E.
AU - Patra, P. K.
PY - 2013
Y1 - 2013
N2 - Atmospheric column-averaged mole fractions of carbon dioxide (XCO 2) at 53 locations around the world were derived from aircraft measurements covering the altitude range of about 1-10 km. We used CO 2 vertical profile measurements from three major carbon cycle programs, a global climatological data set of air number density profiles and tropopause height for calculating XCO2 for the period of 2007-2009. Vertical profiles of the CO2 mixing ratio are complemented by tall tower data up to 400m from the earth's surface and by simulated profiles in the stratosphere from a chemistry-transport model. The amplitude of the seasonal cycle of calculated XCO2 values shows clear latitudinal dependence, and the amplitude decreases from about 10 ppm at high latitudes in the Northern Hemisphere to at most 2 ppm in the tropics and the Southern Hemisphere. The uncertainties of XCO2 were estimated from assumptions about CO 2 profiles for each flight. Typically, uncertainties were less than 1 ppm; thus, this data set is within the level of uncertainty needed for primary validation of XCO2 measurements by the Greenhouse gases Observing SATellite (GOSAT) and by future satellite missions for monitoring greenhouse gases.
AB - Atmospheric column-averaged mole fractions of carbon dioxide (XCO 2) at 53 locations around the world were derived from aircraft measurements covering the altitude range of about 1-10 km. We used CO 2 vertical profile measurements from three major carbon cycle programs, a global climatological data set of air number density profiles and tropopause height for calculating XCO2 for the period of 2007-2009. Vertical profiles of the CO2 mixing ratio are complemented by tall tower data up to 400m from the earth's surface and by simulated profiles in the stratosphere from a chemistry-transport model. The amplitude of the seasonal cycle of calculated XCO2 values shows clear latitudinal dependence, and the amplitude decreases from about 10 ppm at high latitudes in the Northern Hemisphere to at most 2 ppm in the tropics and the Southern Hemisphere. The uncertainties of XCO2 were estimated from assumptions about CO 2 profiles for each flight. Typically, uncertainties were less than 1 ppm; thus, this data set is within the level of uncertainty needed for primary validation of XCO2 measurements by the Greenhouse gases Observing SATellite (GOSAT) and by future satellite missions for monitoring greenhouse gases.
UR - http://www.scopus.com/inward/record.url?scp=84884710284&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84884710284&partnerID=8YFLogxK
U2 - 10.5194/acp-13-5265-2013
DO - 10.5194/acp-13-5265-2013
M3 - Article
AN - SCOPUS:84884710284
VL - 13
SP - 5265
EP - 5275
JO - Atmospheric Chemistry and Physics
JF - Atmospheric Chemistry and Physics
SN - 1680-7316
IS - 10
ER -