On the incident solar radiation in CMIP5 models

Linjiong Zhou; Minghua Zhang; Qing Bao; Yimin Liu

doi:10.1002/2015GL063239

On the incident solar radiation in CMIP5 models

Linjiong Zhou
, Minghua Zhang
, Qing Bao
, Yimin Liu

CAS - Institute of Atmospheric Physics
University of Chinese Academy of Sciences
Stony Brook University

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

Annual incident solar radiation at the top of atmosphere should be independent of longitudes. However, in many Coupled Model Intercomparison Project phase 5 (CMIP5) models, we find that the incident radiation exhibited zonal oscillations, with up to 30W/m² of spurious variations. This feature can affect the interpretation of regional climate and diurnal variation of CMIP5 results. This oscillation is also found in the Community Earth System Model. We show that this feature is caused by temporal sampling errors in the calculation of the solar zenith angle. The sampling error can cause zonal oscillations of surface clear-sky net shortwave radiation of about 3W/m² when an hourly radiation time step is used and 24W/m² when a 3h radiation time step is used.

Original language	English
Pages (from-to)	1930-1935
Number of pages	6
Journal	Geophysical Research Letters
Volume	42
Issue number	6
DOIs	https://doi.org/10.1002/2015GL063239
State	Published - Mar 28 2015

Keywords

CMIP5 results
Insolation

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10.1002/2015GL063239

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abstract = "Annual incident solar radiation at the top of atmosphere should be independent of longitudes. However, in many Coupled Model Intercomparison Project phase 5 (CMIP5) models, we find that the incident radiation exhibited zonal oscillations, with up to 30W/m2 of spurious variations. This feature can affect the interpretation of regional climate and diurnal variation of CMIP5 results. This oscillation is also found in the Community Earth System Model. We show that this feature is caused by temporal sampling errors in the calculation of the solar zenith angle. The sampling error can cause zonal oscillations of surface clear-sky net shortwave radiation of about 3W/m2 when an hourly radiation time step is used and 24W/m2 when a 3h radiation time step is used.",

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AU - Zhou, Linjiong

AU - Zhang, Minghua

AU - Bao, Qing

AU - Liu, Yimin

PY - 2015/3/28

Y1 - 2015/3/28

N2 - Annual incident solar radiation at the top of atmosphere should be independent of longitudes. However, in many Coupled Model Intercomparison Project phase 5 (CMIP5) models, we find that the incident radiation exhibited zonal oscillations, with up to 30W/m2 of spurious variations. This feature can affect the interpretation of regional climate and diurnal variation of CMIP5 results. This oscillation is also found in the Community Earth System Model. We show that this feature is caused by temporal sampling errors in the calculation of the solar zenith angle. The sampling error can cause zonal oscillations of surface clear-sky net shortwave radiation of about 3W/m2 when an hourly radiation time step is used and 24W/m2 when a 3h radiation time step is used.

AB - Annual incident solar radiation at the top of atmosphere should be independent of longitudes. However, in many Coupled Model Intercomparison Project phase 5 (CMIP5) models, we find that the incident radiation exhibited zonal oscillations, with up to 30W/m2 of spurious variations. This feature can affect the interpretation of regional climate and diurnal variation of CMIP5 results. This oscillation is also found in the Community Earth System Model. We show that this feature is caused by temporal sampling errors in the calculation of the solar zenith angle. The sampling error can cause zonal oscillations of surface clear-sky net shortwave radiation of about 3W/m2 when an hourly radiation time step is used and 24W/m2 when a 3h radiation time step is used.

KW - CMIP5 results

KW - Insolation

UR - https://www.scopus.com/pages/publications/84927720988

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DO - 10.1002/2015GL063239

M3 - Article

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VL - 42

SP - 1930

EP - 1935

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 6

ER -

On the incident solar radiation in CMIP5 models

Abstract

Keywords

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