气候变化领域集成服务门户(CCPortal): An assessment of radiative flux biases in the climate forecast system model CFSv2

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DOI	10.1007/s00382-020-05546-2
	An assessment of radiative flux biases in the climate forecast system model CFSv2
	Kumar S.; Phani R.; Mukhopadhyay P.; Balaji C.
发表日期	2021
ISSN	0930-7575
卷号	56 期号:2021-05-06
英文摘要	An extensive analysis of radiative flux biases in the Climate Forecast System Model Version 2 (CFSv2) is done. Annual mean and seasonal variations of biases at the surface and top of the atmosphere (TOA) are reported in the global domain. Large regional biases in shortwave (SW) and longwave (LW) radiation are observed over convectively active zones in the tropics. The relative contribution of various processes responsible for the reported biases is quantified. The poor simulation of clouds and inadequate representation of surface properties seem to be major contributors. Over certain regions, errors due to different processes add up, whereas, over other regions, errors tend to nullify each other. Surface and atmospheric variables taken as input parameters in the radiative transfer modules are compared with satellite-based observations. The maximum biases in SW and LW radiation are observed over the regions of persistent low clouds. The magnitude of the SW and LW biases at the TOA is in phase with the biases in cloud fraction by and large. However, the error in the radiative fluxes due to errors in surface radiative properties is of equal importance. The cold bias in near-surface air temperature reported in other studies may partly be attributed to an underestimation in the net SW radiation at the surface. In the present study, a plausible prescription is also provided to correct the source of the biases. © 2020, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Bias; CFS; Cloud; Physical process; Radiation
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/183383
作者单位	Indian Institute of Tropical Meteorology, Ministry of Earth Sciences, Pune, India; Indian Institute of Technology, Madras, Chennai, India
推荐引用方式 GB/T 7714	Kumar S.,Phani R.,Mukhopadhyay P.,et al. An assessment of radiative flux biases in the climate forecast system model CFSv2[J],2021,56(2021-05-06).
APA	Kumar S.,Phani R.,Mukhopadhyay P.,&Balaji C..(2021).An assessment of radiative flux biases in the climate forecast system model CFSv2.Climate Dynamics,56(2021-05-06).
MLA	Kumar S.,et al."An assessment of radiative flux biases in the climate forecast system model CFSv2".Climate Dynamics 56.2021-05-06(2021).