大气与环境光学学报2024，Vol.19Issue(4)：429-439,11.DOI:10.3969/j.issn.1673-6141.2024.04.004
基于闪烁仪的热通量反演及MOD16产品校验
Scintillometer-based heat flux inversion and MOD16 product calibration
摘要
Abstract
Large-aperture scintillometer can be used for regional surface heat flux observations and is also an effective tool for measuring surface heat fluxes at the satellite image scale.For the improvement of satellite product algorithms and observation methods,it is crucial to validate the accuracy of satellite products utilizing surface relative truth of scintillator.To preliminarily solve the problem of satellite product calibration,two scintillometer stations in Hebi,Henan Province,and Ulanqab,Inner Mongolia,China were selected.Based on the theory of near ground similarity and combined with the meteorological information observed,the refractive index structure constant output from the scintillometers was processed.Then the sensible and latent heat fluxes were calculated using an iterative algorithm,and the accuracy of scintillometers was verified taking the measurement results of the eddy correlation meter in Hebi area as reference.Additionally,the latent heat flux data in MOD16A2 remote sensing evapotranspiration products were ground-checked using scintillometer data from the Ulanqab region.The results demonstrate that the scintillometer inversion results have high accuracy,high correlation with the eddy data,and highly match the scale of the elements in satellite images,allowing for the use of these data as ground calibration of satellite products.关键词
潜热通量/大孔径闪烁仪/涡动相关仪/地面校验Key words
latent heat flux/large aperture scintillometer/eddy covariance system/ground calibration分类
天文与地球科学引用本文复制引用
刘聪,岳恒,马昕,龚威..基于闪烁仪的热通量反演及MOD16产品校验[J].大气与环境光学学报,2024,19(4):429-439,11.基金项目
国家自然科学基金(42171464,41971283,41801261,41827801,41801282) （42171464,41971283,41801261,41827801,41801282）
