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Calibration of the Total Carbon Column Observing Network using aircraft profile data

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TLDR
In this paper, the authors present a calibration of TCCON data using WMO-scale in-strumentation aboard aircraft that measured profiles over four Total Carbon Column Observing Network (TCCON) stations.
Abstract
The Total Carbon Column Observing Network (TCCON) produces precise measurements of the column av- erage 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 suffi- cient accuracy to compute total columns that can be used in combination with in situ measurements. The TCCON must therefore be calibrated to World Meteorological Orga- nization (WMO) in situ trace gas measurement scales. We present a calibration of TCCON data using WMO-scale in- strumentation aboard aircraft that measured profiles over four TCCON stations during 2008 and 2009. These calibrations are compared with similar observations made in 2004 and 2006. The results indicate that a single, global calibration factor for each gas accurately captures the TCCON total col- umn data within error.

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Journal ArticleDOI

The Total Carbon Column Observing Network

TL;DR: The TCCON provides a link between satellite measurements and the extensive ground-based in situ network and achieves an accuracy and precision in total column measurements that is unprecedented for remote-sensing observations.

The Atmospheric Chemistry Experiment (ACE): Mission Overview

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The ACOS CO 2 retrieval algorithm – Part 1: Description and validation against synthetic observations

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The CAMS reanalysis of atmospheric composition

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References
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Journal ArticleDOI

The HITRAN 2008 molecular spectroscopic database

TL;DR: The new HITRAN is greatly extended in terms of accuracy, spectral coverage, additional absorption phenomena, added line-shape formalisms, and validity, and molecules, isotopologues, and perturbing gases have been added that address the issues of atmospheres beyond the Earth.
Journal ArticleDOI

Unified equations for the slope, intercept, and standard errors of the best straight line

TL;DR: In this paper, it was shown that the least-squares estimation method of fitting the best straight line to data points having normally distributed errors yields identical results for the slope and intercept of the line as does the method of maximum likelihood estimation.
Journal ArticleDOI

The Total Carbon Column Observing Network

TL;DR: The TCCON provides a link between satellite measurements and the extensive ground-based in situ network and achieves an accuracy and precision in total column measurements that is unprecedented for remote-sensing observations.
Journal ArticleDOI

Intercomparison of remote sounding instruments

TL;DR: In this article, the authors compare the effect of different averaging kernels and error covariances on the performance of different profiles and derived quantities such as the total column of a constituent.
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