横断山区孕灾环境和危险性指标数据集（1961-2020）-时空三极环境大数据平台

基于中国地面逐日气象要素数据集、全国地理基础数据、自然环境基础数据集，运用像元二分模型、密度分析、RclimDex、非平稳标准化降水蒸散指数(NSPEI)和双线性内插法等多种指标计算方法计算了横断山区的极端降水、极端气温、干旱强度、干旱频率等多种指标。该数据集包括横断山区的孕灾环境基础数据集、极端降水指标基础数据集、极端气温指标基础数据集、干旱强度和干旱频率基础数据集。该数据集可为区域内极端高温、降水和干旱风险评估提供基本的指标体系。我们得出横断山区内90%以上站点的极端气温暖指数显著上升，极端气温冷指数显著下降。南北气温差异显著，以青藏高原为界，北部气温日较差大，平均在13.83℃，南部气温日较差小，平均为11.38℃，南部平均的冰冻日数在1d左右。随着重现期的增加，持续干燥期（CDD）大于110d的区域逐渐由西部扩大到金沙江下游流域；在不同重现期下，持续降雨期（CWD）和年降水总量（PRCPTOT）的高值区集中在西部和南部的边缘；北部的日最大降水量（RX1day）在不同重现期下变化不显著，在60mm以下；最低气温极小值（TNn）和最高气温极大值（TXx）在空间分布上北低南高，40℃以上的高温普遍发生在南部的干旱河谷。

数据使用方法

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数据的引用

孙鹏. (2021). 横断山区孕灾环境和危险性指标数据集（1961-2020）. 国家青藏高原科学数据中心, 2021. doi: 10.11888/Meteoro.tpdc.271329.
[Sun, P. (2021). Dataset of disaster-prone environment and risk indicators in Hengduan Mountain Area (1961-2020). National Tibetan Plateau Data Center, 2021]

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License： This work is licensed under an Attribution 4.0 International (CC BY 4.0)

资助项目

第二次青藏高原综合科学考察研究

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关注

关键词

学科：人地关系大气陆地表层
主题：区划土壤湿度降水地形蒸散发温度横断山区平均气温基础数据降水强度大气环流蒸发量湿度/干燥度水文自然区划
地点：横断山区
时间： 1961-2020

空间位置

East: 104.65	West: 93.65
South: 21.69	North: 34.09

数据细节

文件列表
/Dataset of disaster-prone environment and risk indicators in Hengduan Mountain Area (2020)/平均气温.tfw 大小：81 字节

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/Dataset of disaster-prone environment and risk indicators in Hengduan Mountain Area (2020)/平均气温变化率.tif.aux.xml 大小：1.8 KB

/Dataset of disaster-prone environment and risk indicators in Hengduan Mountain Area (2020)/平均风速.tif.ovr 大小：12.6 MB

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/Dataset of disaster-prone environment and risk indicators in Hengduan Mountain Area (2020)/降水变化率.tif.ovr 大小：12.6 MB

/Dataset of disaster-prone environment and risk indicators in Hengduan Mountain Area (2020)/降水量变化率.tfw 大小：81 字节

/Dataset of disaster-prone environment and risk indicators in Hengduan Mountain Area (2020)/降水量变化率.tif 大小：34.4 MB

/Dataset of disaster-prone environment and risk indicators in Hengduan Mountain Area (2020)/降水量变化率.tif.aux.xml 大小：1.9 KB

/Dataset of disaster-prone environment and risk indicators in Hengduan Mountain Area (2020)/降水量变化率.tif.ovr 大小：12.6 MB

/Dataset of disaster-prone environment and risk indicators in Hengduan Mountain Area (2020)/风速变化率.tfw 大小：81 字节

/Dataset of disaster-prone environment and risk indicators in Hengduan Mountain Area (2020)/风速变化率.tif 大小：34.4 MB

/Dataset of disaster-prone environment and risk indicators in Hengduan Mountain Area (2020)/风速变化率.tif.aux.xml 大小：2.2 KB

/Dataset of disaster-prone environment and risk indicators in Hengduan Mountain Area (2020)/风速变化率.tif.ovr 大小：12.6 MB

/Dataset of disaster-prone environment and risk indicators in Hengduan Mountain Area (2020)/年降水量.tfw 大小：81 字节
时间分辨率：Yearly
空间分辨率：100m - 1km
大小：3737.6 MB
浏览：888 次
下载量：25 次
数据时间范围：1961-05-01 至 2020-06-30
共享方式： 开放获取
元数据更新时间：2021-06-14