Development of satellite precipitation maps for hydrologicalapplications
开发用于水文应用的卫星降水图
基本信息
- 批准号:22760365
- 负责人:
- 金额:$ 2.41万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Young Scientists (B)
- 财政年份:2010
- 资助国家:日本
- 起止时间:2010 至 2011
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
For further improvement of satellite precipitation maps such as GSMaP, we have conducted two studies in this project. Firstly, rain rate estimates in the new standard product of TRMM/PR (Version 7, V7) were evaluated. Owing to the improvement of surface reference technique, heavy rainfall estimates appear more frequently in V7 than in the previous version. We also evaluated V7’s rain rate estimates with high-temporal resolution rain gauge dataset over Japan and concluded that the heavy rainfall estimates (higher than 50 mm/h) are overestimated, but their biases are less than 50%. Secondly, we developed a new method to detect rainfall for the interval of two measurements of microwave radiometers. In this method, we judge rain or no-rain from the decrease in brightness temperature at low frequency channels. This method yields comparable results with the method used in GSMaP for less vegetated area.
为了进一步完善GSMaP等卫星降水图,我们在该项目中进行了两项研究,首先,对TRMM/PR新标准产品(版本7,V7)中的降雨率估算进行了评估。技术,强降雨估计在 V7 中出现的频率比之前的版本更高。我们还使用日本高时间分辨率雨量计数据集评估了 V7 的降雨率估计,并得出结论,强降雨估计(高于 50 毫米/小时)是。其次,我们开发了一种新的方法来检测微波辐射计两次测量间隔内的降雨量,在该方法中,我们根据低温亮温的下降来判断降雨或无雨。该方法产生的结果与 GMap 用于植被较少区域的方法相当。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
地上気象観測1分値データとTRMM/PR/V7を用いた短時間降水強度極値
使用1分钟地面气象观测数据和TRMM/PR/V7的短期降水强度极值
- DOI:
- 发表时间:2012
- 期刊:
- 影响因子:0
- 作者:瀬戸心太;内海信幸;木口雅司;沖大幹
- 通讯作者:沖大幹
A new rain detection method to complement high-resolution global precipitation products
一种新的降雨检测方法来补充高分辨率全球降水产品
- DOI:
- 发表时间:2012
- 期刊:
- 影响因子:1.1
- 作者:Shinta Seto; Takahiro Tsunekawa; Taikan Oki
- 通讯作者:Taikan Oki
Comparison of TRMM PR V6 and V7 focusing heavy rainfall
TRMM PR V6和V7聚焦强降雨对比
- DOI:
- 发表时间:2011
- 期刊:
- 影响因子:0
- 作者:Seto S.; T. Iguchi; R. Meneghini
- 通讯作者:R. Meneghini
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{{ truncateString('SETO Shinta', 18)}}的其他基金
Global satellite mapping of wet surface and diversified monitoring of hydrological changes
全球湿地卫星测绘及水文变化多元化监测
- 批准号:
17K06582 - 财政年份:2017
- 资助金额:
$ 2.41万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Development of early warning system for water-related disasters by using satellite remote sensing
卫星遥感水灾预警系统开发
- 批准号:
25820226 - 财政年份:2013
- 资助金额:
$ 2.41万 - 项目类别:
Grant-in-Aid for Young Scientists (B)
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Global satellite mapping of wet surface and diversified monitoring of hydrological changes
全球湿地卫星测绘及水文变化多元化监测
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Improvement of the humidity estimation method by applying radar imaging method
应用雷达成像法改进湿度估算方法
- 批准号:
24740321 - 财政年份:2012
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Coastal heavy rainbands over the tropical Asian region: Mechanism of hazardous meso-scale weather on the western coast of Sumatera Island, Indonesia
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- 批准号:
22310115 - 财政年份:2010
- 资助金额:
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