Total Net Downward Surface Solar Irradiance for Himawari-8/9 (HIM_SSI_Netdown)

<p>As part of the surface solar irradiance (SSI) collection, this product is the net downward total (diffuse and direct) irradiance, i.e., the difference between irradiance from above (downwelling) and reflected irradiance from below (upwelling), integrated over the solar spectral range (300 to 3500 nm). The product was generated for daytime Himawari-8/9 imagery using the <a href="http://doi.org/10.1016/j.solener.2021.03.029">Qin et al. (2021a)</a> algorithm for the Australian continent and surrounding waters. While it is provided here in a regular latitude/longitude grid, the product is also available in the original Himawari (geostationary) projection (WGS84, sub-satellite longitude = 140.7&deg;E and satellite altitude = 35785863 meters). Please contact the authors for accessing the data, which is located on the Australian National Computational Infrastructure (NCI). Currently, a near-real-time algorithm/processor is being developed to improve data availability, and to extend production to Himawari-10 (2028-2045).</p>