[A-AS07] EarthCAREによる雲エアロゾル放射科学の幕開け

[AAS07-08] Aerosol retrieval using the ATLID and MSI onboard EarthCARE

★Invited Papers

*西澤 智明¹、工藤 玲²、及川 栄治²、日暮 明子¹、神 慶孝¹、杉本 伸夫¹、佐藤 可織³、岡本 創³ (1.国立環境研究所、2.気象庁気象研究所、3.九州大学応用力学研究所)

キーワード：エアロゾル、ライダー、イメージャー、全球、エアロゾル種

EarthCARE is a Japan-Europe joint satellite observation mission for understanding the interaction between cloud, aerosol, and radiation processes in the earth climate. Four sensors of cloud profiling radar (CPR), multi-spectral imager (MSI), broadband radiometer (BBR), and high spectral resolution lidar (ATLID) are onboard the EarthCARE satellite. We have developed algorithms to estimate geophysical parameters of aerosols and clouds (JAXA ATLID level 2 standard products) from ATLID measurements to determine their global distribution. The algorithms estimate the following four products: (1) Layer identifiers such as aerosols, clouds, clear-skies, or surfaces, (2) Particle optical properties such as extinction, backscatter, and depolarization ratio at 355nm, (3) Particle type identifiers such as smoke, dust, warm-water, and 3-D ice, (4) Planetary boundary layer height. In addition, we have developed algorithms to estimate extinction coefficient of four aerosol components such as dust, sea-salt, carbonaceous, and water-soluble particles using only ATLID data or both ATLID and MSI data (JAXA ATLID level 2 research products). Prior to the development of the algorithm for ATLID, we have developed a similar aerosol component retrieval algorithm using CALIOP and MODIS data; this technique was introduced into the ATLID algorithm. Since the successful launch in May 2024, we have been comparing the ATLID products with ground-based lidar and other data. In this presentation, we will present the results of this initial comparison analysis and discuss future improvements to the ATLID algorithm. We will also introduce our global aerosol analysis using CALIOP, with a view to applying it to EarthCARE global aerosol data.