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Using XCO2 retrievals for assessing the long-term consistency of NDACC/FTIR data sets

Authors: Barthlott, S; Schneider, M; Hase, F; Wiegele, A; Christner, E; Gonzalez, Y; Blumenstock, T; +20 Authors

Using XCO2 retrievals for assessing the long-term consistency of NDACC/FTIR data sets

Abstract

Within the NDACC (Network for the Detection of Atmospheric Composition Change), more than 20 FTIR (Fourier-transform infrared) spectrometers, spread worldwide, provide long-term data records of many atmospheric trace gases. We present a method that uses measured and modelled XCO2 for assessing the consistency of these NDACC data records. Our XCO2 retrieval setup is kept simple so that it can easily be adopted for any NDACC/FTIR-like measurement made since the late 1950s. By a comparison to coincident TCCON (Total Carbon Column Observing Network) measurements, we empirically demonstrate the useful quality of this suggested NDACC XCO2 product (empirically obtained scatter between TCCON and NDACC is about 4‰ for daily mean as well as monthly mean comparisons, and the bias is 25‰). Our XCO2 model is a simple regression model fitted to CarbonTracker results and the Mauna Loa CO2 in situ records. A comparison to TCCON data suggests an uncertainty of the model for monthly mean data of below 3‰. We apply the method to the NDACC/FTIR spectra that are used within the project MUSICA (multi-platform remote sensing of isotopologues for investigating the cycle of atmospheric water) and demonstrate that there is a good consistency for these globally representative set of spectra measured since 1996: the scatter between the modelled and measured XCO2 on a yearly time scale is only 3‰.

Country
Belgium
Related Organizations
Keywords

remote sensing, atmospheric composition, Physical, chemical, mathematical & earth Sciences, NDACC network, Physique, chimie, mathématiques & sciences de la terre, Earth sciences & physical geography, Sciences de la terre & géographie physique

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  • citations
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    0
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Average
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Average
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Average
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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Funded by
NSERC
Project
  • Funder: Natural Sciences and Engineering Research Council of Canada (NSERC)
,
EC| MUSICA
Project
MUSICA
Multi-platform remote sensing of isotopologues for investigating the cycle of atmospheric water
  • Funder: European Commission (EC)
  • Project Code: 256961
  • Funding stream: FP7 | SP2 | ERC
sysimport:crosswalk:repository
,
EC| NORS
Project
NORS
Demonstration Network Of ground-based Remote Sensing Observations in support of the GMES Atmospheric Service
  • Funder: European Commission (EC)
  • Project Code: 284421
  • Funding stream: FP7 | SP1 | SPA
sysimport:crosswalk:repository
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