Personal Homepage

Personal Information:

MORE+

Degree:Doctoral degree
Status:Employed
School/Department:Peking University

任华忠

+

Date of Birth: 1985-10-05

Gender: Male

Education Level: With Certificate of Graduation for Doctorate Study

Administrative Position: Associate Professor with Tenure

Alma Mater: Beijing Normal University

Paper Publications

Low Lunar Surface Temperature Retrieval From LRO Diviner Radiometer Observation Data
Hits:

Impact Factor:0.0
DOI number:10.1109/LGRS.2024.3433569
Journal:IEEE Geoscience and Remote Sensing Letters
Key Words:Diviner, low lunar surface temperature (LST), temperature-emissivity separation and gradient boosting regression (TES-GBR) method, thermal infrared (TIR)
Abstract:The daytime and nighttime lunar surface temperatures (LSTs) are crucial for investigating lunar surface environment and lunar mineral composition. The Diviner sensor provides global lunar surface observation in seven thermal infrared (TIR) channels from 8 to 400 µm, but the existing LST retrieval methods are more suitable for daytime pixels with high temperature rather than the nighttime or shadowed pixels with low temperature. This letter develops a new method, called as TES-GBR, by combining the conventional temperature-emissivity separation (TES) and gradient boosting regression (GBR) method, to retrieve low LST (e.g., nighttime or shadowed regions) from Diviner's four longwave infrared channel data. The new method used three emissivity curve shape parameters, maximum-minimum apparent emissivity difference (MMD), maximum-minimum ratio (MMR), and emissivity variance (VAR), to establish their relationship with the minimum emissivity (εmin). Results indicate that the TES-GBR method can reduce the emissivity error to 0.005 from 0.029 obtained by the conventional TES method and get a general retrieval accuracy of 1.0 K for the low LST. Finally, the TES-GBR method was applied to retrieve the nighttime LST of the year 2015, and it found that there was a period variation in the nighttime temperature.
Indexed by:Journal paper
Document Code:7001305
Discipline:Natural Science
First-Level Discipline:Geography
Document Type:J
Volume:21
Translation or Not:no
Included Journals:SCI
First Author:Zian Wang
Correspondence Author:Huazhong Ren
All the Authors:Jinshun Zhu
Date of Publication:2024-07-25