Modification and Applicability Evaluation of Comprehensive Monitoring Index of Meteorological Drought in Hubei Province
- Article
- Figures
- Metrics
- Preview PDF
- Reference
- Related
- Cited by
- Materials
Abstract:
Based on the theoretical analysis of the characteristics of the comprehensive monitoring index of meteorological drought (IMCI), together with drought characteristics in Hubei Province, the IMCI proposed by the National Climate Center (NCC) is modified for use in Hubei Province, and then tested in the aspects of the statistic characteristics of droughts and the diagnosis capability of typical drought processes through comparing with the commonly used compound meteorological drought index (ICI). Results show that there is no significant difference between IMCI and ICI in the general conclusion of drought monitoring, but IMCI shows a slower rate than ICI in drought development, and IMCI performs better at characterizing long term severe droughts. In addition, the modified IMCI has effectively corrected the insensitivity of the NCC IMCI in detecting of the occurrence, development and relief of droughts as well as its overestimate of drought severity, and the modified IMCI is no more too sensitive to precipitation compared to ICI. However, both indexes still tend to too sensitive to small precipitation in winter season and there are unreasonable phenomena: sudden enhancement of droughts in both. The results suggest that it is advisable to perform a proper evaluation and modification if necessary before applying IMCI to a new specific region.
Keywords:
Project Supported:
Clc Number:
You are thevisitors
Supported by:Beijing E-Tiller Technology Development Co., Ltd.
Supported by:Beijing E-Tiller Technology Development Co., Ltd.