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首页> 外文期刊>International Journal of Climatology: A Journal of the Royal Meteorological Society >Construction of homogeneous climatic regions by combining cluster analysis and L-moment approach on the basis of Reconnaissance Drought Index for Pakistan
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Construction of homogeneous climatic regions by combining cluster analysis and L-moment approach on the basis of Reconnaissance Drought Index for Pakistan

机译：基于基于巴基斯坦侦察干旱指数的集群分析和L-MONGE方法构建均匀气候区域

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摘要

Drought is a natural hazard which has slow onset and assessment of its vulnerability is important for water resources management and sustainable development particularly in the most vulnerable areas to climate change and its worse impacts. Pakistan is facing acute water scarcity and regionalization of drought is a pre-planning strategy for coping the severe condition of water management in the country. This study is conducted to identify homogenous climatic regions (HCRs) with respect to drought condition based on Reconnaissance Drought Index using climate data of 55 metrological stations across Pakistan. For this purpose two statistical methods, cluster analysis and L-moments technique were used. First, cluster analysis was performed using site characteristics of the stations which identified five homogenous groups. Second, two statistical measures that is, discordancy measures and heterogeneity measure were implied after some regional adjustments, to satisfy the homogeneity of the homogenous groups developed in step one based on at-site statistics of the stations using L-moments technique. These statistical measures established validity of five homogeneous climatic regions for Pakistan. Third, to assess these HCRs several results using site characteristics and climate data of the stations were calculated which show that elevation has key role in the rainfall pattern and aridity of the regions. According to the results, there is high variability among these regions with respect to water recourses. First two regions consists most elevated areas with enough rainfall and glacier. Regions (3) and (4) include most vulnerable and drought-prone areas of Sindh and Baluchistan provinces while Region (5) has enough rainfall in monsoon season. This study findings will help in adaptation, mitigation and future's planning regarding climate, water resources management, monitoring droughts and its projections etc. in different areas and fill the gaps in existing literature in Pakistan.
机译：干旱是一种自然危害，其发病缓慢和评估其脆弱性对于水资源管理和可持续发展是重要的，特别是在最脆弱的气候变化地区和其影响越来越糟的影响。巴基斯坦正面临急性水资源稀缺，干旱区划是一种预先规划战略，用于应对该国水资源管理的严重状况。本研究进行了基于侦察干旱指数，在巴基斯坦的55个计量站的侦察干旱指数上鉴定均匀气候区域（HCRS）。为此目的，使用了两个统计方法，聚类分析和L-MOCENTS技术。首先，使用鉴定五种均质基团的站点特征进行聚类分析。其次，在某些区域调整后，暗示了两种统计措施，即在某些区域调整后暗示了基于使用L-MOCENTS技术的基于站点的站点统计，满足步骤1中开发的均质组的均匀性。这些统计措施为巴基斯坦的五个均质气候区域建立了有效性。第三，为了评估这些HCRS使用站点特征和车站的气候数据的几个结果表明，高程在区域的降雨模式和充满活力中具有关键作用。根据结果​​，这些区域相对于水斥责具有高的变化。前两个地区由大多数升高的区域组成，有足够的降雨和冰川。地区（3）和（4）包括Sindh和Baluchistan省的最脆弱和干旱易发的地区，而区域（5）在季风季节有足够的降雨。本研究调查结果将有助于适应，减缓和未来的气候，水资源管理，监测干旱及其预测等的规划等不同领域，并填补巴基斯坦现有文学中的差距。

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