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14 Oct 2020
14 Oct 2020
Abstract. We describe the change of operational instrument for the routine measurement of column-averaged dry-air mole fraction of several greenhouse gases (denoted Xgas) at the Lauder Total Carbon Column Observing Network (TCCON) site and the steps taken to demonstrate comparability between the two observation systems following a systematic methodology.
Further, we intercompare retrieved Xgas values during an intensive intercomparison period during October and November 2018, when both instruments were performing optimally, and on subsequent, less frequent occasions. The average difference between the two observing systems was found to be well below the expected level of uncertainty for TCCON retrievals for all compared species. In the case of XCO2 the average difference was 0.0264 ± 0.0465 % (0.11 ± 0.19 μmol mol−1).
David F. Pollard et al.
David F. Pollard et al.
TCCON data from Lauder (NZ), Release GGG2014.R0 David Frank Pollard, John Robinson, and Hisako Shiona https://doi.org/10.14291/tccon.ggg2014.lauder03.R0
TCCON data from Lauder (NZ), 125HR, Release GGG2014.R0 V. Sherlock, B. Connor, J. Robinson, H. Shiona, D. Smale, and D. F. Pollard https://doi.org/10.14291/tccon.ggg2014.lauder02.R0/1149298
David F. Pollard et al.
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