Japan Geoscience Union Meeting 2021

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A (Atmospheric and Hydrospheric Sciences ) » A-AS Atmospheric Sciences, Meteorology & Atmospheric Environment

[A-AS05] Atmospheric Chemistry

Sun. Jun 6, 2021 5:15 PM - 6:30 PM Ch.07

convener:Tomoki Nakayama(Graduate School of Fisheries and Environmental Sciences, Nagasaki University), Naoko Saitoh(Center for Environmental Remote Sensing), Sakae Toyoda(Department of Chemical Science and Engineering, Tokyo Institute of Technology), Risa Uchida(Japan Automobile Research Institute)

5:15 PM - 6:30 PM

[AAS05-P08] A relationship between surface oxidant concentration and daily maximum temperature, and its long-term variability

*Atsushi Shimizu1, Tatsuya Nagashima1 (1.National Institute for Environmental Studies)

Keywords:oxidant, maximum temerature, climate penalty factor

The climate penalty factor (CPF) for each prefecture and each month in last 42 years in Japan were estimated from mean 8 hours maximum surface oxidant and daily maximum temperature observations, and compared with CPF calculated by chemical transport model CMAQ. Opposite to general tendency of positive CPF all over Japan, negative CPF was confirmed in western part of Japan during winter. Large positive CPF was found during June and August around urbanized areas (Kanto and Kinki). Sporadic perturbations were dominant in several years/months. Horizontal variations of CPF calculated by CMAQ were dependent on the horizontal grid scale.