气候变化领域集成服务门户(CCPortal): An improved methodology for deriving high-resolution surface shortwave radiative fluxes from MODIS in the Arctic region

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DOI	10.1002/2014JD022151
	An improved methodology for deriving high-resolution surface shortwave radiative fluxes from MODIS in the Arctic region
	Niu, Xiaolei; Pinker, Rachel T.
通讯作者	Pinker, RT (通讯作者)
发表日期	2015
ISSN	2169-897X
EISSN	2169-8996
起始页码	2382
结束页码	2393
卷号	120 期号:6
英文摘要	The Arctic is experiencing an unprecedented increase in surface air temperature and decrease in sea ice extent. The causes of these changes are still being debated; radiative fluxes are believed to play an important role in this warming. The primary motivation for this study is to advance the quality and resolution of currently available information on surface shortwave (solar) irradiance (SWR) for the Arctic. Such information is needed to meet the challenge for accurate estimates of heat input into the open waters. An inference scheme that utilizes the Moderate Resolution Imaging Spectroradiometer (MODIS) observations is optimized for high latitudes and implemented at 5km for 2007 at an hourly time scale. Evaluation of the 5km based SWR estimates against hourly ground observations at Barrow site shows a mean bias of 7.9Wm(-2) (3% of mean values), a standard deviation of 58.2Wm(-2) (23% of mean value), and a high correlation of 0.95. Evaluation of the SWR estimates against daily ground measurements at these latitudes shows good agreement with surface observations at three sites, with a mean bias of 1.9Wm(-2) (1.1% of mean values), a standard deviation of 31.5Wm(-2) (17.8% of mean value), and a high correlation of 0.96. Information at this high resolution and good quality can lead to improved estimates of heat input into the complex Arctic domain. For the Beaufort Sea domain (70 degrees N-80 degrees N, 120 degrees E-50 degrees E), the differences can amount to 116MJm(-2) (7%) of the total solar input of this region.
关键词	SEA-ICE ENERGY BUDGET WATER-VAPOR DATA SETS CLIMATE MODELS INPUT DATA PART II CLOUD ALBEDO OCEAN
英文关键词	radiative fluxes in the Arctic
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000353061800014
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258475
推荐引用方式 GB/T 7714	Niu, Xiaolei,Pinker, Rachel T.. An improved methodology for deriving high-resolution surface shortwave radiative fluxes from MODIS in the Arctic region[J]. 中国科学院青藏高原研究所,2015,120(6).
APA	Niu, Xiaolei,&Pinker, Rachel T..(2015).An improved methodology for deriving high-resolution surface shortwave radiative fluxes from MODIS in the Arctic region.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,120(6).
MLA	Niu, Xiaolei,et al."An improved methodology for deriving high-resolution surface shortwave radiative fluxes from MODIS in the Arctic region".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 120.6(2015).