Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2021, Vol. 37 ›› Issue (2): 88-95.doi: 10.11924/j.issn.1000-6850.casb2020-0491

Special Issue: 水稻 农业气象

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Inversion of Rice Field Temperature Based on Satellite Remote Sensing and Automatic Weather Station Data: Taking Anhui Province as an Example

Pema Rigzin1,2(), Dekey Yongzom1,2, Sonamlang Yangchen3, Lha ba1,2(), Zhang Xinlei4, Dhonyo Dorji1,5, Tashi Ngodup1,5   

  1. 1Tibet Climate Center, Lhasa 850000
    2Institute of Plateau Meteorology, CMA, Lhasa 850000
    3Suo County Meteorological Bureau, Nagqu Tibet 852000
    4Shanxi Meteorological Bureau, Taiyuan 030000
    5Tibet Meteorological Bureau, Lhasa 850000
  • Received:2020-09-22 Revised:2020-11-23 Online:2021-01-15 Published:2021-01-14
  • Contact: Lha ba E-mail:466797027@qq.com;354507294@qq.com

Abstract:

With the global warming and frequent occurrence of high temperature events, the probability of rice being affected by high temperatures increases. Rice field temperature is the foundation for studying the high temperature heat damage and its impact on rice. Therefore, the wide-scale inversion of rice field temperature could help relevant departments set up a wide-range rice field temperature data in a short time and carry out research on rice high temperature heat damage and decision making. In this study, the 8-day synthetic data of MOD09A1 was used to extract rice planting areas in Anhui Province. Then the temperature of the AWS (automatic weather station) in the rice planting area and the four LST values such as MOD11A1 and MYD11A1 were used for multiple stepwise regression. The optimal equation for estimating the maximum and average temperature from remote sensing data was obtained, with the R2 of 0.728 and 0.825, root mean square errors (RSME) of 2.21 and 1.54, and mean absolute errors (MEA) of 1.73 and 1.15, respectively. Finally, the method of inverting rice field air temperature based on satellite remote sensing information and AWS air temperature data was developed. The method was well applied in the extraction of rice planting areas and the inversion of final temperature in Anhui Province in 2017.

Key words: remote sensing information, rice field, temperature, inversion, weather station, Anhui

CLC Number: