干旱区生态环境知识资源中心(Arid): Algorithm for the Estimation of Continental Scale Land-Surface Broadband Albedo from INSAT-3D Imager Data

Arid

DOI	10.1007/s12524-021-01371-0
	Algorithm for the Estimation of Continental Scale Land-Surface Broadband Albedo from INSAT-3D Imager Data
	Pandya, Mehul R.; Pathak, Vishal; Kaushik, Nitesh; Trivedi, Himanshu J.
通讯作者	Pandya, MR (corresponding author), ISRO, Space Applicat Ctr, Ahmadabad, Gujarat, India.
来源期刊	JOURNAL OF THE INDIAN SOCIETY OF REMOTE SENSING
ISSN	0255-660X
EISSN	0974-3006
出版年	2021
英文摘要	Land surface albedo (LSA) is an important parameter in surface-energy budget studies and process-based models. Availability of LSA on a continental scale from the geostationary platform can be very useful in various applications and modelling activities. A study has been carried out to develop a narrow to broadband albedo conversion algorithm for estimating broadband LSA over India and surrounding from INSAT-3D (I3D) Imager observations. An atmospheric radiative transfer model was used to simulate the at-sensor reflectivity corresponding to two spectral bands of I3D Imager located in visible (0.55-0.75 mu m) as well as shortwave infrared (1.55-1.70 mu m) regions and a shortwave broadband spectral region (0.40-2.5 mu m) for diverse land-atmospheric characteristics by assuming the surfaces as Lambertian targets. Then a mathematical relationship between reflectivity of two Imager bands and a shortwave broadband was developed based upon radiative transfer model simulation results, which yielded narrow-to-broadband conversion coefficients. A separate set of narrow to broadband conversion coefficients for major land covers were generated for I3D Imager sensor. Using the proposed method and coefficients, broadband LSA maps were generated over India and surrounding regions. Daily and 15-Day composite LSA products have also been successfully generated on continental scale. The broadband LSA derived from I3D captured the albedo range successfully for various land covers, including water (0.03-0.07), desert (0.30-0.55), crop (0.12-0.18), forest (0.11-0.17), soil (0.09-0.26) and snow (0.41-0.65). Comparison of I3D-derived LSA by the proposed algorithm with the Moderate Resolution Imaging Spectroradiometer (MODIS) albedo product showed a very good match (R-2=0.88 and root mean square error, RMSE=0.046). The proposed algorithm is being successfully used for operational retrieval of Daily and 15-Day composite LSA on Indian Space Research Organisation's MOSDAC (Meteorological and Oceanographic Data Archival Centre) and India Meteorology Department's IMDPS (IMD Processing System) sites.
英文关键词	Albedo Broadband INSAT-3D Soil Vegetation
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000656389800003
WOS关键词	NARROW-BAND ; SATELLITE-OBSERVATIONS ; RETRIEVAL ; REFLECTANCE ; METEOSAT ; CONVERSIONS ; NADIR ; BRDF
WOS类目	Environmental Sciences ; Remote Sensing
WOS研究方向	Environmental Sciences & Ecology ; Remote Sensing
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/352362
作者单位	[Pandya, Mehul R.; Kaushik, Nitesh] ISRO, Space Applicat Ctr, Ahmadabad, Gujarat, India; [Pathak, Vishal; Trivedi, Himanshu J.] CVM, NVPAS, Vallabh Vidyanagar, Gujarat, India
推荐引用方式 GB/T 7714	Pandya, Mehul R.,Pathak, Vishal,Kaushik, Nitesh,et al. Algorithm for the Estimation of Continental Scale Land-Surface Broadband Albedo from INSAT-3D Imager Data[J],2021.
APA	Pandya, Mehul R.,Pathak, Vishal,Kaushik, Nitesh,&Trivedi, Himanshu J..(2021).Algorithm for the Estimation of Continental Scale Land-Surface Broadband Albedo from INSAT-3D Imager Data.JOURNAL OF THE INDIAN SOCIETY OF REMOTE SENSING.
MLA	Pandya, Mehul R.,et al."Algorithm for the Estimation of Continental Scale Land-Surface Broadband Albedo from INSAT-3D Imager Data".JOURNAL OF THE INDIAN SOCIETY OF REMOTE SENSING (2021).