Evaluation of the atmosphere–land–ocean–sea ice interface processes in the Regional Arctic System Model version 1 (RASM1) using local and globally gridded observations
The Regional Arctic System Model version 1 (RASM1) has been developed to provide high-resolution simulations of the Arctic atmosphere–ocean–sea ice–land system. Here, we provide a baseline for the capability of RASM to simulate interface processes by comparing retrospective simulations from RASM1 fo...
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2018
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ftdoajarticles:oai:doaj.org/article:5c1d22e1dca347cd9120ca6d9bf7e5aa 2023-05-15T14:58:09+02:00 Evaluation of the atmosphere–land–ocean–sea ice interface processes in the Regional Arctic System Model version 1 (RASM1) using local and globally gridded observations M. A. Brunke J. J. Cassano N. Dawson A. K. DuVivier W. J. Gutowski Jr. J. Hamman W. Maslowski B. Nijssen J. E. J. Reeves Eyre J. C. Renteria A. Roberts X. Zeng 2018-12-01T00:00:00Z https://doi.org/10.5194/gmd-11-4817-2018 https://doaj.org/article/5c1d22e1dca347cd9120ca6d9bf7e5aa EN eng Copernicus Publications https://www.geosci-model-dev.net/11/4817/2018/gmd-11-4817-2018.pdf https://doaj.org/toc/1991-959X https://doaj.org/toc/1991-9603 doi:10.5194/gmd-11-4817-2018 1991-959X 1991-9603 https://doaj.org/article/5c1d22e1dca347cd9120ca6d9bf7e5aa Geoscientific Model Development, Vol 11, Pp 4817-4841 (2018) Geology QE1-996.5 article 2018 ftdoajarticles https://doi.org/10.5194/gmd-11-4817-2018 2022-12-31T08:18:00Z The Regional Arctic System Model version 1 (RASM1) has been developed to provide high-resolution simulations of the Arctic atmosphere–ocean–sea ice–land system. Here, we provide a baseline for the capability of RASM to simulate interface processes by comparing retrospective simulations from RASM1 for 1990–2014 with the Community Earth System Model version 1 (CESM1) and the spread across three recent reanalyses. Evaluations of surface and 2 m air temperature, surface radiative and turbulent fluxes, precipitation, and snow depth in the various models and reanalyses are performed using global and regional datasets and a variety of in situ datasets, including flux towers over land, ship cruises over oceans, and a field experiment over sea ice. These evaluations reveal that RASM1 simulates precipitation that is similar to CESM1, reanalyses, and satellite gauge combined precipitation datasets over all river basins within the RASM domain. Snow depth in RASM is closer to upscaled surface observations over a flatter region than in more mountainous terrain in Alaska. The sea ice–atmosphere interface is well simulated in regards to radiation fluxes, which generally fall within observational uncertainty. RASM1 monthly mean surface temperature and radiation biases are shown to be due to biases in the simulated mean diurnal cycle. At some locations, a minimal monthly mean bias is shown to be due to the compensation of roughly equal but opposite biases between daytime and nighttime, whereas this is not the case at locations where the monthly mean bias is higher in magnitude. These biases are derived from errors in the diurnal cycle of the energy balance (radiative and turbulent flux) components. Therefore, the key to advancing the simulation of SAT and the surface energy budget would be to improve the representation of the diurnal cycle of radiative and turbulent fluxes. The development of RASM2 aims to address these biases. Still, an advantage of RASM1 is that it captures the interannual and interdecadal variability in the ... Article in Journal/Newspaper Arctic Sea ice Alaska Directory of Open Access Journals: DOAJ Articles Arctic Geoscientific Model Development 11 12 4817 4841 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Geology QE1-996.5 |
spellingShingle |
Geology QE1-996.5 M. A. Brunke J. J. Cassano N. Dawson A. K. DuVivier W. J. Gutowski Jr. J. Hamman W. Maslowski B. Nijssen J. E. J. Reeves Eyre J. C. Renteria A. Roberts X. Zeng Evaluation of the atmosphere–land–ocean–sea ice interface processes in the Regional Arctic System Model version 1 (RASM1) using local and globally gridded observations |
topic_facet |
Geology QE1-996.5 |
description |
The Regional Arctic System Model version 1 (RASM1) has been developed to provide high-resolution simulations of the Arctic atmosphere–ocean–sea ice–land system. Here, we provide a baseline for the capability of RASM to simulate interface processes by comparing retrospective simulations from RASM1 for 1990–2014 with the Community Earth System Model version 1 (CESM1) and the spread across three recent reanalyses. Evaluations of surface and 2 m air temperature, surface radiative and turbulent fluxes, precipitation, and snow depth in the various models and reanalyses are performed using global and regional datasets and a variety of in situ datasets, including flux towers over land, ship cruises over oceans, and a field experiment over sea ice. These evaluations reveal that RASM1 simulates precipitation that is similar to CESM1, reanalyses, and satellite gauge combined precipitation datasets over all river basins within the RASM domain. Snow depth in RASM is closer to upscaled surface observations over a flatter region than in more mountainous terrain in Alaska. The sea ice–atmosphere interface is well simulated in regards to radiation fluxes, which generally fall within observational uncertainty. RASM1 monthly mean surface temperature and radiation biases are shown to be due to biases in the simulated mean diurnal cycle. At some locations, a minimal monthly mean bias is shown to be due to the compensation of roughly equal but opposite biases between daytime and nighttime, whereas this is not the case at locations where the monthly mean bias is higher in magnitude. These biases are derived from errors in the diurnal cycle of the energy balance (radiative and turbulent flux) components. Therefore, the key to advancing the simulation of SAT and the surface energy budget would be to improve the representation of the diurnal cycle of radiative and turbulent fluxes. The development of RASM2 aims to address these biases. Still, an advantage of RASM1 is that it captures the interannual and interdecadal variability in the ... |
format |
Article in Journal/Newspaper |
author |
M. A. Brunke J. J. Cassano N. Dawson A. K. DuVivier W. J. Gutowski Jr. J. Hamman W. Maslowski B. Nijssen J. E. J. Reeves Eyre J. C. Renteria A. Roberts X. Zeng |
author_facet |
M. A. Brunke J. J. Cassano N. Dawson A. K. DuVivier W. J. Gutowski Jr. J. Hamman W. Maslowski B. Nijssen J. E. J. Reeves Eyre J. C. Renteria A. Roberts X. Zeng |
author_sort |
M. A. Brunke |
title |
Evaluation of the atmosphere–land–ocean–sea ice interface processes in the Regional Arctic System Model version 1 (RASM1) using local and globally gridded observations |
title_short |
Evaluation of the atmosphere–land–ocean–sea ice interface processes in the Regional Arctic System Model version 1 (RASM1) using local and globally gridded observations |
title_full |
Evaluation of the atmosphere–land–ocean–sea ice interface processes in the Regional Arctic System Model version 1 (RASM1) using local and globally gridded observations |
title_fullStr |
Evaluation of the atmosphere–land–ocean–sea ice interface processes in the Regional Arctic System Model version 1 (RASM1) using local and globally gridded observations |
title_full_unstemmed |
Evaluation of the atmosphere–land–ocean–sea ice interface processes in the Regional Arctic System Model version 1 (RASM1) using local and globally gridded observations |
title_sort |
evaluation of the atmosphere–land–ocean–sea ice interface processes in the regional arctic system model version 1 (rasm1) using local and globally gridded observations |
publisher |
Copernicus Publications |
publishDate |
2018 |
url |
https://doi.org/10.5194/gmd-11-4817-2018 https://doaj.org/article/5c1d22e1dca347cd9120ca6d9bf7e5aa |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Sea ice Alaska |
genre_facet |
Arctic Sea ice Alaska |
op_source |
Geoscientific Model Development, Vol 11, Pp 4817-4841 (2018) |
op_relation |
https://www.geosci-model-dev.net/11/4817/2018/gmd-11-4817-2018.pdf https://doaj.org/toc/1991-959X https://doaj.org/toc/1991-9603 doi:10.5194/gmd-11-4817-2018 1991-959X 1991-9603 https://doaj.org/article/5c1d22e1dca347cd9120ca6d9bf7e5aa |
op_doi |
https://doi.org/10.5194/gmd-11-4817-2018 |
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Geoscientific Model Development |
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11 |
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12 |
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4817 |
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