Consistency and quality assessment of the Metop-A/IASI and Metop-B/IASI operational trace gas products (O 3 , CO, N 2 O, CH 4 , and CO 2 ) in the subtropical North Atlantic
This paper presents the tools and methodology for performing a routine comprehensive monitoring of consistency and quality of IASI (Infrared Atmospheric Sounding Interferometer) trace gas Level 2 (L2) products (O 3 , CO, N 2 O, CH 4 , and CO 2 ) generated at EUMETSAT (European Organisation for the E...
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ftdoajarticles:oai:doaj.org/article:722a9ef9150e4fa0b62a54613ed67dcb 2023-05-15T17:32:39+02:00 Consistency and quality assessment of the Metop-A/IASI and Metop-B/IASI operational trace gas products (O 3 , CO, N 2 O, CH 4 , and CO 2 ) in the subtropical North Atlantic O. E. García E. Sepúlveda M. Schneider F. Hase T. August T. Blumenstock S. Kühl R. Munro Á. J. Gómez-Peláez T. Hultberg A. Redondas S. Barthlott A. Wiegele Y. González E. Sanromá 2016-05-01T00:00:00Z https://doi.org/10.5194/amt-9-2315-2016 https://doaj.org/article/722a9ef9150e4fa0b62a54613ed67dcb EN eng Copernicus Publications http://www.atmos-meas-tech.net/9/2315/2016/amt-9-2315-2016.pdf https://doaj.org/toc/1867-1381 https://doaj.org/toc/1867-8548 1867-1381 1867-8548 doi:10.5194/amt-9-2315-2016 https://doaj.org/article/722a9ef9150e4fa0b62a54613ed67dcb Atmospheric Measurement Techniques, Vol 9, Iss 5, Pp 2315-2333 (2016) Environmental engineering TA170-171 Earthwork. Foundations TA715-787 article 2016 ftdoajarticles https://doi.org/10.5194/amt-9-2315-2016 2022-12-31T01:14:12Z This paper presents the tools and methodology for performing a routine comprehensive monitoring of consistency and quality of IASI (Infrared Atmospheric Sounding Interferometer) trace gas Level 2 (L2) products (O 3 , CO, N 2 O, CH 4 , and CO 2 ) generated at EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites) using ground-based observations at the Izaña Atmospheric Observatory (IZO, Tenerife). As a demonstration the period 2010–2014 was analysed, covering the version 5 of the IASI L2 processor. Firstly, we assess the consistency between the total column (TC) observations from the IASI sensors on board the EUMETSAT Metop-A and Metop-B meteorological satellites (IASI-A and IASI-B respectively) in the subtropical North Atlantic region during the first 2 years of IASI-B operations (2012–2014). By analysing different timescales, we probe the daily and annual consistency of the variability observed by IASI-A and IASI-B and thereby assess the suitability of IASI-B for continuation of the IASI-A time series. The continuous intercomparison of both IASI sensors also offers important diagnostics for identifying inconsistencies between the data records and for documenting their temporal stability. Once the consistency of IASI sensors is documented we estimate the overall accuracy of all the IASI trace gas TC products by comparing to coincident ground-based Fourier transform infrared spectrometer (FTS) measurements performed at IZO from 2010 to 2014. The IASI L2 products reproduce the ground-based FTS observations well at the longest temporal scales, i.e. annual cycles and long-term trends for all the trace gases considered (Pearson correlation coefficient, R , larger than 0.95 and 0.75 for long-term trends and annual cycles respectively) with the exception of CO 2 . For CO 2 acceptable agreement is only achieved for long-term trends ( R ∼ 0.70). The differences observed between IASI and FTS observations can be in part attributed to the different vertical sensitivities of the two remote sensing ... Article in Journal/Newspaper North Atlantic Directory of Open Access Journals: DOAJ Articles Atmospheric Measurement Techniques 9 5 2315 2333 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental engineering TA170-171 Earthwork. Foundations TA715-787 |
spellingShingle |
Environmental engineering TA170-171 Earthwork. Foundations TA715-787 O. E. García E. Sepúlveda M. Schneider F. Hase T. August T. Blumenstock S. Kühl R. Munro Á. J. Gómez-Peláez T. Hultberg A. Redondas S. Barthlott A. Wiegele Y. González E. Sanromá Consistency and quality assessment of the Metop-A/IASI and Metop-B/IASI operational trace gas products (O 3 , CO, N 2 O, CH 4 , and CO 2 ) in the subtropical North Atlantic |
topic_facet |
Environmental engineering TA170-171 Earthwork. Foundations TA715-787 |
description |
This paper presents the tools and methodology for performing a routine comprehensive monitoring of consistency and quality of IASI (Infrared Atmospheric Sounding Interferometer) trace gas Level 2 (L2) products (O 3 , CO, N 2 O, CH 4 , and CO 2 ) generated at EUMETSAT (European Organisation for the Exploitation of Meteorological Satellites) using ground-based observations at the Izaña Atmospheric Observatory (IZO, Tenerife). As a demonstration the period 2010–2014 was analysed, covering the version 5 of the IASI L2 processor. Firstly, we assess the consistency between the total column (TC) observations from the IASI sensors on board the EUMETSAT Metop-A and Metop-B meteorological satellites (IASI-A and IASI-B respectively) in the subtropical North Atlantic region during the first 2 years of IASI-B operations (2012–2014). By analysing different timescales, we probe the daily and annual consistency of the variability observed by IASI-A and IASI-B and thereby assess the suitability of IASI-B for continuation of the IASI-A time series. The continuous intercomparison of both IASI sensors also offers important diagnostics for identifying inconsistencies between the data records and for documenting their temporal stability. Once the consistency of IASI sensors is documented we estimate the overall accuracy of all the IASI trace gas TC products by comparing to coincident ground-based Fourier transform infrared spectrometer (FTS) measurements performed at IZO from 2010 to 2014. The IASI L2 products reproduce the ground-based FTS observations well at the longest temporal scales, i.e. annual cycles and long-term trends for all the trace gases considered (Pearson correlation coefficient, R , larger than 0.95 and 0.75 for long-term trends and annual cycles respectively) with the exception of CO 2 . For CO 2 acceptable agreement is only achieved for long-term trends ( R ∼ 0.70). The differences observed between IASI and FTS observations can be in part attributed to the different vertical sensitivities of the two remote sensing ... |
format |
Article in Journal/Newspaper |
author |
O. E. García E. Sepúlveda M. Schneider F. Hase T. August T. Blumenstock S. Kühl R. Munro Á. J. Gómez-Peláez T. Hultberg A. Redondas S. Barthlott A. Wiegele Y. González E. Sanromá |
author_facet |
O. E. García E. Sepúlveda M. Schneider F. Hase T. August T. Blumenstock S. Kühl R. Munro Á. J. Gómez-Peláez T. Hultberg A. Redondas S. Barthlott A. Wiegele Y. González E. Sanromá |
author_sort |
O. E. García |
title |
Consistency and quality assessment of the Metop-A/IASI and Metop-B/IASI operational trace gas products (O 3 , CO, N 2 O, CH 4 , and CO 2 ) in the subtropical North Atlantic |
title_short |
Consistency and quality assessment of the Metop-A/IASI and Metop-B/IASI operational trace gas products (O 3 , CO, N 2 O, CH 4 , and CO 2 ) in the subtropical North Atlantic |
title_full |
Consistency and quality assessment of the Metop-A/IASI and Metop-B/IASI operational trace gas products (O 3 , CO, N 2 O, CH 4 , and CO 2 ) in the subtropical North Atlantic |
title_fullStr |
Consistency and quality assessment of the Metop-A/IASI and Metop-B/IASI operational trace gas products (O 3 , CO, N 2 O, CH 4 , and CO 2 ) in the subtropical North Atlantic |
title_full_unstemmed |
Consistency and quality assessment of the Metop-A/IASI and Metop-B/IASI operational trace gas products (O 3 , CO, N 2 O, CH 4 , and CO 2 ) in the subtropical North Atlantic |
title_sort |
consistency and quality assessment of the metop-a/iasi and metop-b/iasi operational trace gas products (o 3 , co, n 2 o, ch 4 , and co 2 ) in the subtropical north atlantic |
publisher |
Copernicus Publications |
publishDate |
2016 |
url |
https://doi.org/10.5194/amt-9-2315-2016 https://doaj.org/article/722a9ef9150e4fa0b62a54613ed67dcb |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Atmospheric Measurement Techniques, Vol 9, Iss 5, Pp 2315-2333 (2016) |
op_relation |
http://www.atmos-meas-tech.net/9/2315/2016/amt-9-2315-2016.pdf https://doaj.org/toc/1867-1381 https://doaj.org/toc/1867-8548 1867-1381 1867-8548 doi:10.5194/amt-9-2315-2016 https://doaj.org/article/722a9ef9150e4fa0b62a54613ed67dcb |
op_doi |
https://doi.org/10.5194/amt-9-2315-2016 |
container_title |
Atmospheric Measurement Techniques |
container_volume |
9 |
container_issue |
5 |
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2315 |
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2333 |
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1766130862877835264 |