Implementing an advanced land surface scheme into an AGCM: methodology and results

Z-L. Yang; A. J. Pitman; A. Henderson-Sellers

Implementing an advanced land surface scheme into an AGCM: methodology and results

Z-L. Yang, A. J. Pitman, A. Henderson-Sellers

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

Abstract

This paper describes the first order impacts of incorporating a complex land-surface scheme, the Bare Essentials of Surface Transfer (BEST) into the Australian Bureau of Meteorology Research Centre (BMRC) global atmospheric general circulation model (AGCM). A two-year climatology from the AGCM with BEST has been compared with a ten-year simulated climatology without BEST. The wintertime simulations with BEST show significant improvements especially over the Northern Hemisphere mainly due to the more realistic treatment of snow cover. However, the summertime simulations with BEST are worse than those from the current BMRC AGCM due to the poor specification of albedo and roughness length. Incorporating BEST into the BMRC AGCM leads to an overall reduction of surface wetness, evaporation, cloud cover and precipitation, results consistent with findings by other authors.

Original language	English
Title of host publication	Exchange processes at the land surface for a range of space and timescales
Editors	Hans-Jürgen Bolle, R. A. Feddes, Jetse D. Kalma
Place of Publication	Wallingford, Oxfordshire
Publisher	International Association of Hydrological Sciences
Pages	583-590
Number of pages	8
ISBN (Print)	0947571531, 9780947571535
Publication status	Published - 1993
Event	International Symposium on Exchange Processes at the Land Surface for a Range of Space and Time Scales - Yokohama, Japan Duration: 13 Jul 1993 → 16 Jul 1993

Publication series

Name	IAHS PUBLICATION
Publisher	INT ASSOC HYDROLOGICAL SCIENCES
ISSN (Print)	0144-7815

Conference

Conference	International Symposium on Exchange Processes at the Land Surface for a Range of Space and Time Scales
Country	Japan
City	Yokohama
Period	13/07/93 → 16/07/93

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Yang, Z-L. ; Pitman, A. J. ; Henderson-Sellers, A. / Implementing an advanced land surface scheme into an AGCM : methodology and results. Exchange processes at the land surface for a range of space and timescales. editor / Hans-Jürgen Bolle ; R. A. Feddes ; Jetse D. Kalma. Wallingford, Oxfordshire : International Association of Hydrological Sciences, 1993. pp. 583-590 (IAHS PUBLICATION).

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title = "Implementing an advanced land surface scheme into an AGCM: methodology and results",

abstract = "This paper describes the first order impacts of incorporating a complex land-surface scheme, the Bare Essentials of Surface Transfer (BEST) into the Australian Bureau of Meteorology Research Centre (BMRC) global atmospheric general circulation model (AGCM). A two-year climatology from the AGCM with BEST has been compared with a ten-year simulated climatology without BEST. The wintertime simulations with BEST show significant improvements especially over the Northern Hemisphere mainly due to the more realistic treatment of snow cover. However, the summertime simulations with BEST are worse than those from the current BMRC AGCM due to the poor specification of albedo and roughness length. Incorporating BEST into the BMRC AGCM leads to an overall reduction of surface wetness, evaporation, cloud cover and precipitation, results consistent with findings by other authors.",

author = "Z-L. Yang and Pitman, {A. J.} and A. Henderson-Sellers",

year = "1993",

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publisher = "International Association of Hydrological Sciences",

pages = "583--590",

editor = "Hans-J{\"u}rgen Bolle and Feddes, {R. A.} and Kalma, {Jetse D.}",

booktitle = "Exchange processes at the land surface for a range of space and timescales",

note = "International Symposium on Exchange Processes at the Land Surface for a Range of Space and Time Scales ; Conference date: 13-07-1993 Through 16-07-1993",

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Yang, Z-L, Pitman, AJ & Henderson-Sellers, A 1993, Implementing an advanced land surface scheme into an AGCM: methodology and results. in H-J Bolle, RA Feddes & JD Kalma (eds), Exchange processes at the land surface for a range of space and timescales. IAHS PUBLICATION, International Association of Hydrological Sciences, Wallingford, Oxfordshire, pp. 583-590, International Symposium on Exchange Processes at the Land Surface for a Range of Space and Time Scales, Yokohama, Japan, 13/07/93.

Implementing an advanced land surface scheme into an AGCM : methodology and results. / Yang, Z-L.; Pitman, A. J.; Henderson-Sellers, A.

Exchange processes at the land surface for a range of space and timescales. ed. / Hans-Jürgen Bolle; R. A. Feddes; Jetse D. Kalma. Wallingford, Oxfordshire : International Association of Hydrological Sciences, 1993. p. 583-590 (IAHS PUBLICATION).

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

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N2 - This paper describes the first order impacts of incorporating a complex land-surface scheme, the Bare Essentials of Surface Transfer (BEST) into the Australian Bureau of Meteorology Research Centre (BMRC) global atmospheric general circulation model (AGCM). A two-year climatology from the AGCM with BEST has been compared with a ten-year simulated climatology without BEST. The wintertime simulations with BEST show significant improvements especially over the Northern Hemisphere mainly due to the more realistic treatment of snow cover. However, the summertime simulations with BEST are worse than those from the current BMRC AGCM due to the poor specification of albedo and roughness length. Incorporating BEST into the BMRC AGCM leads to an overall reduction of surface wetness, evaporation, cloud cover and precipitation, results consistent with findings by other authors.

AB - This paper describes the first order impacts of incorporating a complex land-surface scheme, the Bare Essentials of Surface Transfer (BEST) into the Australian Bureau of Meteorology Research Centre (BMRC) global atmospheric general circulation model (AGCM). A two-year climatology from the AGCM with BEST has been compared with a ten-year simulated climatology without BEST. The wintertime simulations with BEST show significant improvements especially over the Northern Hemisphere mainly due to the more realistic treatment of snow cover. However, the summertime simulations with BEST are worse than those from the current BMRC AGCM due to the poor specification of albedo and roughness length. Incorporating BEST into the BMRC AGCM leads to an overall reduction of surface wetness, evaporation, cloud cover and precipitation, results consistent with findings by other authors.

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BT - Exchange processes at the land surface for a range of space and timescales

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ER -

Implementing an advanced land surface scheme into an AGCM: methodology and results

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