Near-surface meteorology during the Arctic Summer Cloud Ocean Study (ASCOS): evaluation of reanalyses and global climate models

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de Boer, G. (author)

Near-surface meteorology during the Arctic Summer Cloud Ocean Study (ASCOS) : evaluation of reanalyses and global climate models

Article/chapterEnglish2014

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2014-01-13
Copernicus GmbH,2014
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LIBRIS-ID:oai:DiVA.org:su-100866
https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-100866URI
https://doi.org/10.5194/acp-14-427-2014DOI

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Language:English
Summary in:English

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Subject category:art swepub-publicationtype

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AuthorCount:9;
Atmospheric measurements from the Arctic Summer Cloud Ocean Study (ASCOS) are used to evaluate the performance of three atmospheric reanalyses (European Centre for Medium Range Weather Forecasting (ECMWF)-Interim reanalysis, National Center for Environmental Prediction (NCEP)-National Center for Atmospheric Research (NCAR) reanalysis, and NCEP-DOE (Department of Energy) reanalysis) and two global climate models (CAM5 (Community Atmosphere Model 5) and NASA GISS (Goddard Institute for Space Studies) ModelE2) in simulation of the high Arctic environment. Quantities analyzed include near surface meteorological variables such as temperature, pressure, humidity and winds, surface-based estimates of cloud and precipitation properties, the surface energy budget, and lower atmospheric temperature structure. In general, the models perform well in simulating large-scale dynamical quantities such as pressure and winds. Near-surface temperature and lower atmospheric stability, along with surface energy budget terms, are not as well represented due largely to errors in simulation of cloud occurrence, phase and altitude. Additionally, a development version of CAMS, which features improved handling of cloud macro physics, has demonstrated to improve simulation of cloud properties and liquid water amount. The ASCOS period additionally provides an excellent example of the benefits gained by evaluating individual budget terms, rather than simply evaluating the net end product, with large compensating errors between individual surface energy budget terms that result in the best net energy budget.

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Shupe, M. D. (author)
Caldwell, P. M. (author)
Bauer, S. E. (author)
Persson, O. (author)
Boyle, J. S. (author)
Kelley, M. (author)
Klein, S. A. (author)
Tjernström, MichaelStockholms universitet,Meteorologiska institutionen (MISU)(Swepub:su)tjern (author)
Stockholms universitetMeteorologiska institutionen (MISU) (creator_code:org_t)

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In:Atmospheric Chemistry And Physics: Copernicus GmbH14:1, s. 427-4451680-73161680-7324

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By the author/editor: de Boer, G.; Shupe, M. D.; Caldwell, P. M.; Bauer, S. E.; Persson, O.; Boyle, J. S.; show more...; Kelley, M.; Klein, S. A.; Tjernström, Mich ...; show less...

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NATURAL SCIENCES: NATURAL SCIENCES; and Earth and Relate ...; and Meteorology and ...

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By the university: Stockholm University

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