References

ACP

Atmospheric Chemistry and Physics

ACP

Atmos. Chem. Phys.

1680-7324

Copernicus Publications

Göttingen, Germany

10.5194/acp-14-427-2014

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

de Boer

https://orcid.org/0000-0003-4652-7150

¹ ² Shupe

M. D.

https://orcid.org/0000-0002-0973-9982

¹ ² Caldwell

P. M.

³ Bauer

S. E.

https://orcid.org/0000-0001-7823-8690

⁴ ⁵ Persson

¹ ² Boyle

J. S.

³ Kelley

⁵ Klein

S. A.

³ Tjernström

https://orcid.org/0000-0002-6908-7410

⁶

The University of Colorado, Cooperative Institute for Research in Environmental Sciences, Boulder, CO, USA

NOAA Earth System Research Laboratory, Physical Sciences Division, Boulder, CO, USA

Lawrence Livermore National Laboratory, Livermore, CA, USA

Columbia University, The Earth Institute, New York, NY, USA

NASA Goddard Institute for Space Studies, New York, NY, USA

Stockholm University, Department of Meteorology, Stockholm, Sweden

13 01 2014

14 1 427 445

2014

This work is licensed under the Creative Commons Attribution 3.0 Unported License. To view a copy of this licence, visit https://creativecommons.org/licenses/by/3.0/

This article is available from https://acp.copernicus.org/articles/14/427/2014/acp-14-427-2014.html

The full text article is available as a PDF file from https://acp.copernicus.org/articles/14/427/2014/acp-14-427-2014.pdf

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 CAM5, 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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