Study of Water Vapor Variations Associated with Meso-γ Scale Convection: Comparison between GNSS and Non-Hydrostatic Model Data
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- Oigawa Masanori
- Research Institute for Sustainable Humanosphere (RISH), Kyoto University
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- Realini Eugenio
- Research Institute for Sustainable Humanosphere (RISH), Kyoto University Geomatics Research & Development (GReD) srl
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- Tsuda Toshitaka
- Research Institute for Sustainable Humanosphere (RISH), Kyoto University
書誌事項
- 公開日
- 2015
- DOI
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- 10.2151/sola.2015-007
- 公開者
- 公益社団法人 日本気象学会
説明
Water vapor variations associated with a meso-γ scale convection were investigated using GNSS (Global Navigation Satellite System) derived PWV (precipitable water vapor) and high resolution numerical model data with a 250 m horizontal grid interval. A rapid increase of GNSS-derived PWV that occurred prior to the initiation of surface rainfall was well simulated by the numerical model.<br>In the model, PWV values began to increase 16 min before the rainfall occurred at the surface. A local maximum of PWV was formed because of the generation of shallow free convection and surface water vapor flux convergence due to a lifting of an air parcel at approximately 1 km elevation by a preceding surface wind convergence. Due to the existence of a stable inversion layer between 2.2 and 3.5 km elevation, the shallow free convection took 11 min to rise above the inversion layer to form a deep convection. These results suggest that observation of local distributions of GNSS-derived PWV is useful for monitoring the generation of deep moist convection.
収録刊行物
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- SOLA
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SOLA 11 (0), 27-30, 2015
公益社団法人 日本気象学会
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詳細情報 詳細情報について
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- CRID
- 1390001205223978112
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- NII論文ID
- 130004940855
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- ISSN
- 13496476
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
- OpenAIRE
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- 抄録ライセンスフラグ
- 使用不可
