气候变化领域集成服务门户(CCPortal): An Accurate Estimate of Monthly Mean Land Surface Temperatures from MODIS Clear-Sky Retrievals

CCPortal

DOI	10.1175/JHM-D-17-0009.1
	An Accurate Estimate of Monthly Mean Land Surface Temperatures from MODIS Clear-Sky Retrievals
	Chen, Xuelong; Su, Zhongbo; Ma, Yaoming; Cleverly, James; Liddell, Michael
通讯作者	Chen, XL (通讯作者)
发表日期	2017
ISSN	1525-755X
EISSN	1525-7541
起始页码	2827
结束页码	2847
卷号	18 期号:10
英文摘要	MODIS thermal sensors can provide us with global land surface temperature (LST) several times each day, but have difficulty in obtaining information from the land surface in cloudy situations. As a result, the monthly day or night LST products [Terra monthly day LST (TMD), Terra monthly night LST (TMN), Aqua monthly day LST (AMD), and Aqua monthly night LST (AMN)] are the average LST values calculated over a variable number of clear-sky days in a month. Is it possible to derive an accurate estimate of monthly mean LST based on averaging of the multidaily overpasses of MODISsensors? In situ ground measurements and ERA-Interim reanalyses data, both of which provide continuous information in either clear or cloudy conditions, have been used to validate the approach. Using LST measurements from 156 ground flux towers, it was found that the three mean values LST((AMD,AMN) over bar), LST((TMD,TMN) over bar), and LST((AMD,AMN,TMD,TMN) over bar) (mean biases of 0.19, 0.59, and 0.40 K, respectively) can all provide a reliable estimate of all-sky monthly mean LST. Of the three means, we recommend the use of LST((AMD,AMN,TMD,TMN) over bar) for monthly mean LST in climate studies as it provides the most complete coverage. When retrievals from either Terra or Aqua are not available, then either LST((AMD,AMN) over bar) or LST((TMD,TMN) over bar) may be used to fill the gaps. The intrinsic error in the MODIS monthly mean LST cannot be explained from monthly mean view time, view angle, and clear-sky ratio. MODIS monthly LST calculated using this approach LST((AMD,AMN,TMD,TMN) over tilde) (RMSE52.65, mean bias, <+/- 1K) will have wide applicability for climate studies and numerical model evaluation.
关键词	POLAR ORBITING SATELLITES TEMPERATURE/EMISSIVITY PRODUCTS DIURNAL CYCLE UNITED-STATES VALIDATION EMISSIVITY INTERPOLATION PERFORMANCE METEOROLOGY RADIOMETER
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000417352900012
来源期刊	JOURNAL OF HYDROMETEOROLOGY
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/259015
推荐引用方式 GB/T 7714	Chen, Xuelong,Su, Zhongbo,Ma, Yaoming,et al. An Accurate Estimate of Monthly Mean Land Surface Temperatures from MODIS Clear-Sky Retrievals[J]. 中国科学院青藏高原研究所,2017,18(10).
APA	Chen, Xuelong,Su, Zhongbo,Ma, Yaoming,Cleverly, James,&Liddell, Michael.(2017).An Accurate Estimate of Monthly Mean Land Surface Temperatures from MODIS Clear-Sky Retrievals.JOURNAL OF HYDROMETEOROLOGY,18(10).
MLA	Chen, Xuelong,et al."An Accurate Estimate of Monthly Mean Land Surface Temperatures from MODIS Clear-Sky Retrievals".JOURNAL OF HYDROMETEOROLOGY 18.10(2017).