1979-2017年全球CPC制成的高温热浪EHF指数逐年数据集

全球高温热浪指标数据集是使用NOAA物理科学实验室提供的全球每日最高气温0.5°空间分辨率数据，采用John R. Nairn and Robert J. B. Fawcett于2013年提出的超热因子指数（EHF，excess heat factor）计算得到。阈值是采用IPCC推荐的1980-2005年时间段，当地最高气温时间序列的第95百分位数温度。该数据集不覆盖南极地区。该数据集只考虑极端热浪可能发生的时段，即南半球的10月至次年4月和北半球的4月至10月，排除了低温时段出现的温暖期现象，能更好地区别不同地区高温热浪发生时的空间特征。 全球高温热浪指标数据集包含1979-2020年逐年每日的高温热浪事件记录(EHF_record_spell_xxxx.nc)，具体属性包括二进制的是否发生热浪事件的记录（heatwave_EHF）、EHF的强度（EHF）、该高温热浪事件持续天数（spell_all）；1980-2005年第95百分位数温度阈值文件（pct_NF13.nc）；1979-2020年每年高温热浪事件的统计汇总文件（yearly_Summary_1979-2020.nc）。

The Global High-temperature Heatwave Index Dataset is developed using global daily maximum temperature data with 0.5° spatial resolution provided by the NOAA Physical Sciences Laboratory, and calculated with the Excess Heat Factor (EHF) index proposed by John R. Nairn and Robert J. B. Fawcett in 2013. The thresholds are set as the 95th percentile temperature of local daily maximum temperature time series over the 1980–2005 period, as recommended by the IPCC. This dataset does not cover the Antarctic region.

This dataset only considers periods when extreme heatwaves are likely to occur: October to April of the following year in the Southern Hemisphere, and April to October in the Northern Hemisphere. By excluding warm spells occurring during cold periods, it better differentiates the spatial characteristics of high-temperature heatwave events across different regions.

The Global High-temperature Heatwave Index Dataset contains daily heatwave event records from 1979 to 2020 (files named EHF_record_spell_xxxx.nc), with specific attributes including: a binary flag indicating whether a heatwave event occurred (heatwave_EHF), the EHF intensity (EHF), and the duration of the heatwave event (spell_all); the 95th percentile temperature threshold file for 1980–2005 (pct_NF13.nc); and the annual statistical summary file for heatwave events from 1979 to 2020 (yearly_Summary_1979-2020.nc).

搜集汇总

背景与挑战

背景概述

该数据集是基于NOAA全球每日最高气温数据，采用超热因子指数（EHF）计算的1979-2020年全球高温热浪指标数据集，空间分辨率为0.5°x0.5°，覆盖除南极外的全球范围。它专注于极端热浪发生时段（北半球4-10月，南半球10-4月），使用1980-2005年第95百分位数温度作为阈值，以NetCDF-4格式提供每日热浪事件记录、强度、持续天数等详细属性，适用于高温热浪时空特征分析。