Development of APHRO_JP, the first Japanese high-resolution daily precipitation product for more than 100 years
Development of APHRO_JP, the first Japanese high-resolution daily precipitation product for more than 100 years
复制标题
DOI：
10.3178/hrl.4.60
复制
发表时间：
2010-01-01
影响因子：
1.1
通讯作者：
Yasutomi, Natsuko
中科院分区：
文献类型：
--
作者：
Kamiguchi, Kenji;Arakawa, Osamu;Yasutomi, Natsuko
作为“亚洲降水-水资源评价的高分辨率观测数据集成”（APHRODITE）项目的一部分，我们构建了日本陆地地区历史（1900年-）高分辨率（0.05度x0.05度）日降水数据。该产品APHRO_JP来自雨量计观测，旨在准确表示平均值和极值。由于APHRODITE开发的新插值技术，提高了地形降水的估计精度，并减少了长期量的偏差，即使是在空间上观测网络稀疏的世纪早期。此外，该产品还可用于统计分析长期（>= 100年）内高达150 mm/天的强降水。APHRO_JP可进行各种研究，包括验证中尺度模型和分析日本的长期极端降水趋势。
We constructed historical (1900-) high-resolution (0.05 degrees x 0.05 degrees) daily precipitation data over the Japanese land area as part of the product of the "Asian Precipitation - Highly Resolved Observational Data Integration Towards Evaluation of the Water Resources" (APHRODITE) project. This product APHRO_JP is derived from rain gauge observations and is intended to accurately represent both mean and extreme values. Due to new interpolation techniques developed in APHRODITE, estimation accuracy for orographic precipitation is improved, and bias for long-term amount is reduced, even for the early 20th century in which the observation network was sparse in space. Moreover, the product can be used for statistical analysis of heavy precipitation up to about 150 mm/day, over a long term period (>= 100 years).APHRO_JP enables diverse research, including validation of meso-scale models and analysis of the longterm extreme precipitation trend in Japan.