Comparison of MODIS surface temperatures to in situ measurements on the Greenland Ice Sheet from 2014 to 2017
Abstract Remotely sensed land surface temperature (LST) data, such as the Moderate Resolution Imaging Spectroradiometer (MODIS) LST thermal infrared products, are useful for monitoring surface processes on the Greenland Ice Sheet in remote areas but must be validated to ensure accuracy. Using data f...
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crcambridgeupr:10.1017/jog.2022.51 2024-09-15T18:08:58+00:00 Comparison of MODIS surface temperatures to in situ measurements on the Greenland Ice Sheet from 2014 to 2017 Zikan, Karina H. Adolph, Alden C. Brown, Wesley P. Fausto, Robert S. Adam S. Thomas Endowment Fund Saint Olaf College Collaborative Undergraduate Research and Inquiry Program 2022 http://dx.doi.org/10.1017/jog.2022.51 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S002214302200051X en eng Cambridge University Press (CUP) https://creativecommons.org/licenses/by-nc-sa/4.0/ Journal of Glaciology volume 69, issue 273, page 129-140 ISSN 0022-1430 1727-5652 journal-article 2022 crcambridgeupr https://doi.org/10.1017/jog.2022.51 2024-08-14T04:03:37Z Abstract Remotely sensed land surface temperature (LST) data, such as the Moderate Resolution Imaging Spectroradiometer (MODIS) LST thermal infrared products, are useful for monitoring surface processes on the Greenland Ice Sheet in remote areas but must be validated to ensure accuracy. Using data from the Programme for Monitoring the Greenland Ice Sheet (PROMICE), we conducted a MODIS LST validation (MOD/MYD11 C6 swath level product) using radiometric in-situ skin temperature records from 2014 to 2017 over 17 PROMICE sites mostly in the ice sheet's ablation zone. There is a significant cold bias in MODIS LST when compared to PROMICE skin temperature, particularly when PROMICE records temperatures below 0°C (mean bias: 2.4 ± 0.01°C mean ± standard error, RMSE = 3.2°C). Multiple linear regression analysis reveals the difference between MODIS LST and PROMICE skin temperature is larger at lower temperatures, lower latent heat fluxes and higher specific humidity. Our results confirm the presence of a progressive cold bias in the MODIS LST that should be considered in use of this product, and we identify and corroborate areas for ongoing algorithm development. Article in Journal/Newspaper Greenland Ice Sheet Journal of Glaciology Cambridge University Press Journal of Glaciology 1 12 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Abstract Remotely sensed land surface temperature (LST) data, such as the Moderate Resolution Imaging Spectroradiometer (MODIS) LST thermal infrared products, are useful for monitoring surface processes on the Greenland Ice Sheet in remote areas but must be validated to ensure accuracy. Using data from the Programme for Monitoring the Greenland Ice Sheet (PROMICE), we conducted a MODIS LST validation (MOD/MYD11 C6 swath level product) using radiometric in-situ skin temperature records from 2014 to 2017 over 17 PROMICE sites mostly in the ice sheet's ablation zone. There is a significant cold bias in MODIS LST when compared to PROMICE skin temperature, particularly when PROMICE records temperatures below 0°C (mean bias: 2.4 ± 0.01°C mean ± standard error, RMSE = 3.2°C). Multiple linear regression analysis reveals the difference between MODIS LST and PROMICE skin temperature is larger at lower temperatures, lower latent heat fluxes and higher specific humidity. Our results confirm the presence of a progressive cold bias in the MODIS LST that should be considered in use of this product, and we identify and corroborate areas for ongoing algorithm development. |
author2 |
Adam S. Thomas Endowment Fund Saint Olaf College Collaborative Undergraduate Research and Inquiry Program |
format |
Article in Journal/Newspaper |
author |
Zikan, Karina H. Adolph, Alden C. Brown, Wesley P. Fausto, Robert S. |
spellingShingle |
Zikan, Karina H. Adolph, Alden C. Brown, Wesley P. Fausto, Robert S. Comparison of MODIS surface temperatures to in situ measurements on the Greenland Ice Sheet from 2014 to 2017 |
author_facet |
Zikan, Karina H. Adolph, Alden C. Brown, Wesley P. Fausto, Robert S. |
author_sort |
Zikan, Karina H. |
title |
Comparison of MODIS surface temperatures to in situ measurements on the Greenland Ice Sheet from 2014 to 2017 |
title_short |
Comparison of MODIS surface temperatures to in situ measurements on the Greenland Ice Sheet from 2014 to 2017 |
title_full |
Comparison of MODIS surface temperatures to in situ measurements on the Greenland Ice Sheet from 2014 to 2017 |
title_fullStr |
Comparison of MODIS surface temperatures to in situ measurements on the Greenland Ice Sheet from 2014 to 2017 |
title_full_unstemmed |
Comparison of MODIS surface temperatures to in situ measurements on the Greenland Ice Sheet from 2014 to 2017 |
title_sort |
comparison of modis surface temperatures to in situ measurements on the greenland ice sheet from 2014 to 2017 |
publisher |
Cambridge University Press (CUP) |
publishDate |
2022 |
url |
http://dx.doi.org/10.1017/jog.2022.51 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S002214302200051X |
genre |
Greenland Ice Sheet Journal of Glaciology |
genre_facet |
Greenland Ice Sheet Journal of Glaciology |
op_source |
Journal of Glaciology volume 69, issue 273, page 129-140 ISSN 0022-1430 1727-5652 |
op_rights |
https://creativecommons.org/licenses/by-nc-sa/4.0/ |
op_doi |
https://doi.org/10.1017/jog.2022.51 |
container_title |
Journal of Glaciology |
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1 |
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12 |
_version_ |
1810446353103323136 |