This study uses the brightness temperature at the given microwave frequency (18. 7 GHz) from the Microwave Radiation Imager (MWRI) on-board the Fengyun-3B (FY-3B) satellite to improve the τ-ω model by considering the radiative contribution from waterbody in the pixels over the wetland of the Yellow River source region. China. In order to retrieve vegetation optical depth (VOD). https://jalyttlers.shop/product-category/tea-towels/