Construction of the Global Reference Atmospheric Profile Database

Atmospheric profiles are important input parameters for atmospheric radiative transfer models and parameter inversions. The construction of regionally representative reference can provide basic data global environmental research. Most profile databases commonly used lag behind in updating frequency. These usually have limited spatial temporal resolution differ greatly from the real state. To present state, this article constructs Global Reference Profile Database (GRAP) based on ACE-FTS satellite products 2021 2022, AIRS ERA5 reanalysis 2022 u6sing a random forest regression model hierarchical mean algorithm. radiance spectrum FY-3E HIRAS-II using different was simulated compared with measured spectrum. results show that GRAP spectral simulations fit better Comparing CO2, CH4, O3 N2O GRAP, AFGL, MIPAS, RTTOV NDACC ground station equatorial, mid-latitude summer polar winter, has high fits current temperature eight regions China, illustrate is representation state atmosphere Chinese region. fundamental studies