Evaluation of Greenland near surface air temperature datasets
Near-surface air temperature (SAT) over Greenland has important effects on mass balance of the ice sheet, but it is unclear which SAT datasets are reliable in the region. Here extensive in situ SAT measurements ( ∼ 1400 station-years) are used to assess monthly mean SAT from seven global reanalysis...
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ftunivarizona:oai:repository.arizona.edu:10150/625058 2023-05-15T16:27:59+02:00 Evaluation of Greenland near surface air temperature datasets Reeves Eyre, J. E. Jack Zeng, Xubin Univ Arizona, Dept Hydrol & Atmospher Sci 2017-07-05 http://hdl.handle.net/10150/625058 https://doi.org/10.5194/tc-11-1591-2017 en eng COPERNICUS GESELLSCHAFT MBH https://www.the-cryosphere.net/11/1591/2017/ Evaluation of Greenland near surface air temperature datasets 2017, 11 (4):1591 The Cryosphere 1994-0424 doi:10.5194/tc-11-1591-2017 http://hdl.handle.net/10150/625058 The Cryosphere © Author(s) 2017. This work is distributed under the Creative Commons Attribution 3.0 License. CC-BY Article 2017 ftunivarizona https://doi.org/10.5194/tc-11-1591-2017 2020-06-14T08:15:44Z Near-surface air temperature (SAT) over Greenland has important effects on mass balance of the ice sheet, but it is unclear which SAT datasets are reliable in the region. Here extensive in situ SAT measurements ( ∼ 1400 station-years) are used to assess monthly mean SAT from seven global reanalysis datasets, five gridded SAT analyses, one satellite retrieval and three dynamically downscaled reanalyses. Strengths and weaknesses of these products are identified, and their biases are found to vary by season and glaciological regime. MERRA2 reanalysis overall performs best with mean absolute error less than 2 °C in all months. Ice sheet-average annual mean SAT from different datasets are highly correlated in recent decades, but their 1901–2000 trends differ even in sign. Compared with the MERRA2 climatology combined with gridded SAT analysis anomalies, thirty-one earth system model historical runs from the CMIP5 archive reach ∼ 5 °C for the 1901–2000 average bias and have opposite trends for a number of sub-periods. NASA [NNX14AM02G]; DOE [DE-SC0016533]; Agnese Nelms Haury Program in Environment and Social Justice Open Access Journal. This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu. Article in Journal/Newspaper Greenland Ice Sheet The Cryosphere The University of Arizona: UA Campus Repository Agnese ENVELOPE(-58.527,-58.527,-61.967,-61.967) Greenland The Cryosphere 11 4 1591 1605 |
institution |
Open Polar |
collection |
The University of Arizona: UA Campus Repository |
op_collection_id |
ftunivarizona |
language |
English |
description |
Near-surface air temperature (SAT) over Greenland has important effects on mass balance of the ice sheet, but it is unclear which SAT datasets are reliable in the region. Here extensive in situ SAT measurements ( ∼ 1400 station-years) are used to assess monthly mean SAT from seven global reanalysis datasets, five gridded SAT analyses, one satellite retrieval and three dynamically downscaled reanalyses. Strengths and weaknesses of these products are identified, and their biases are found to vary by season and glaciological regime. MERRA2 reanalysis overall performs best with mean absolute error less than 2 °C in all months. Ice sheet-average annual mean SAT from different datasets are highly correlated in recent decades, but their 1901–2000 trends differ even in sign. Compared with the MERRA2 climatology combined with gridded SAT analysis anomalies, thirty-one earth system model historical runs from the CMIP5 archive reach ∼ 5 °C for the 1901–2000 average bias and have opposite trends for a number of sub-periods. NASA [NNX14AM02G]; DOE [DE-SC0016533]; Agnese Nelms Haury Program in Environment and Social Justice Open Access Journal. This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu. |
author2 |
Univ Arizona, Dept Hydrol & Atmospher Sci |
format |
Article in Journal/Newspaper |
author |
Reeves Eyre, J. E. Jack Zeng, Xubin |
spellingShingle |
Reeves Eyre, J. E. Jack Zeng, Xubin Evaluation of Greenland near surface air temperature datasets |
author_facet |
Reeves Eyre, J. E. Jack Zeng, Xubin |
author_sort |
Reeves Eyre, J. E. Jack |
title |
Evaluation of Greenland near surface air temperature datasets |
title_short |
Evaluation of Greenland near surface air temperature datasets |
title_full |
Evaluation of Greenland near surface air temperature datasets |
title_fullStr |
Evaluation of Greenland near surface air temperature datasets |
title_full_unstemmed |
Evaluation of Greenland near surface air temperature datasets |
title_sort |
evaluation of greenland near surface air temperature datasets |
publisher |
COPERNICUS GESELLSCHAFT MBH |
publishDate |
2017 |
url |
http://hdl.handle.net/10150/625058 https://doi.org/10.5194/tc-11-1591-2017 |
long_lat |
ENVELOPE(-58.527,-58.527,-61.967,-61.967) |
geographic |
Agnese Greenland |
geographic_facet |
Agnese Greenland |
genre |
Greenland Ice Sheet The Cryosphere |
genre_facet |
Greenland Ice Sheet The Cryosphere |
op_relation |
https://www.the-cryosphere.net/11/1591/2017/ Evaluation of Greenland near surface air temperature datasets 2017, 11 (4):1591 The Cryosphere 1994-0424 doi:10.5194/tc-11-1591-2017 http://hdl.handle.net/10150/625058 The Cryosphere |
op_rights |
© Author(s) 2017. This work is distributed under the Creative Commons Attribution 3.0 License. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/tc-11-1591-2017 |
container_title |
The Cryosphere |
container_volume |
11 |
container_issue |
4 |
container_start_page |
1591 |
op_container_end_page |
1605 |
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1766017591635083264 |