農業環境技術研究所

最終更新日: 2015年9月17日

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8月20日(木曜日)第555回気象談話会

第555回気象談話会

日時: 平成27年8月20日(木曜日
13:30 ~ 15:30
場所: 農環研 研究本館5F 547会議室
テーマ 講演者 連絡先
Evaluate of Atmospheric particulate matter (PM) by using particle counters in Japan
(ダストパーティクルカウンターによる黄砂、PM2.5等大気粒子状物質量の評価について)
Mingyuan DU
伊川
hirokiikawa@affrc.go.jp
要旨

By measuring PM2.5 using a particle counter with Atmospheric Environmental Regional Observation System (AEROS) of Ministry of the Environment of Japan simultaneously, an evaluating model was deduced for estimating atmospheric particulate matter(PM). Some characteristics of dust event (Kosa) in Tsukuba, Fukuoka and Naha, sandstorm at Tsukuba and PM2.5 at Tsukuba in winter and PM at Nikkou in summer were introduced. The final objective of this study is to understand local source and long distance transported source for detecting agricultural chemicals in PM.

テーマ 講演者 連絡先
Evaluation of surface meteorological variables derived from dynamical downscaling over central Japan. Takahiro Takimoto
伊川
hirokiikawa@affrc.go.jp
要旨

This study presents accuracy evaluation and correction of a 30-year downscaled daily maximum (Tx), minimum (Tn) and mean (Tm) air temperature, specific humidity (Q), wind speed (U), station pressure (P) and solar radiation (S) by using Weather Research and Forecasting (WRF) with a 4.5 km horizontal grid spacing and 1 hour temporal resolution over central Honshu Island, Japan. Most of the model grid shows negative bias in Tx, Tn, Tm, Q and P compared to observation, whereas model overestimates S. Suitable bias correction is applied for each meteorological variable: Tx, Tn and Tm are corrected by monthly mean bias, barometric formula is employed for reconciling P, Q is corrected by monthly relationship between Q bias and altitude difference, relationship between S of model, observed and top of atmosphere is formulated to model S correction. Then, we applied corrected-model variables to crop phenology model, calculation of potential evaporation and paddy water temperature. 

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国立研究開発法人 農業環境技術研究所
305-8604 茨城県つくば市観音台 3-1-3
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