On the use of indices to study extreme precipitation on sub-daily and daily timescales
On the use of indices to study extreme precipitation on sub-daily and daily timescales
复制标题
DOI：
10.1088/1748-9326/ab51b6
复制
发表时间：
2019-12-01
影响因子：
6.7
通讯作者：
Venugopal, V.
中科院分区：
文献类型：
--
作者：
Alexander, Lisa, V;Fowler, Hayley J.;Venugopal, V.
虽然在交换长期高时间分辨率降水数据方面存在障碍，但在交换所谓的“指数”方面障碍较少。这些数据来自每日和次每日数据，并测量可用于研究极端情况的降水频率、持续时间和强度。本文件概述了这些指数的基本原理和使用的历史、经常使用的指数类型以及分析这些指数的优点和缺陷。展望未来，卫星降水产品现在显示出提供全球气候指数的潜力，以补充现有的产品使用长期原位测量记录，但我们建议，以推进这一领域的数据产品之间的差异，基于卫星的估计过程中的局限性，以及规模的固有挑战需要更好地理解。
While there are obstacles to the exchange of long-term high temporal resolution precipitation data, there have been fewer barriers to the exchange of so-called 'indices'. These are derived from daily and sub-daily data and measure aspects of precipitation frequency, duration and intensity that could be used for the study of extremes. This paper outlines the history of the rationale and use of these indices, the types of indices that are frequently used and the advantages and pitfalls in analysing them. Moving forward, satellite precipitation products are now showing the potential to provide global climate indices to supplement existing products using longer-term in situ gauge records but we suggest that to advance this area differences between data products, limitations in satellite-based estimation processes, and the inherent challenges of scale need to be better understood.