Datasets for flash drought analysis in Spain (1961-2018)
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The datasets contain information of high spatial resolution (1.21 km<sup>2</sup>) and weekly frequency in NetCDF format for flash drought analysis in mainland Spain and the Balearic Islands over the period 1961-2018, including both the Standardized Precipitation Evapotranspiration Index (SPEI) and meteorological data required for its calculation [i.e., precipitation and reference evapotranspiration (ETo)]. The precipitation and ETo datasets were created using all daily observational information of precipitation, maximum and minimum air temperature, relative humidity, sunshine duration (as a surrogate of solar radiation) and wind speed from the National Spanish Meteorological Service (AEMET). FAO-56 Penman–Monteith equation (R. G. Allen et al., 1998) was used to calculate the reference evapotranspiration (ETo), which is a spatially and temporally comparable metric for the atmospheric evaporative demand (AED). Additional details of the dataset development and validation have been described in Vicente-Serrano et al. (2017). The SPEI was computed at a 1-month time scale following the methodology proposed by Vicente-Serrano et al. (2010). References: Allen, R. G., Pereira, L. S., Raes, D., & Smith, M. (1998). <em>Crop Evapotranspiration: Guidelines for Computing Crop Water Requirements</em>. Vicente-Serrano, S. M., Beguería, S., & López-Moreno, J. I. (2010). A multiscalar drought index sensitive to global warming: The standardized precipitation evapotranspiration index. <em>Journal of Climate</em>, <em>23</em>(7), 1696–1718. https://doi.org/10.1175/2009JCLI2909.1 Vicente-Serrano, S. M., Tomas-Burguera, M., Beguería, S., Reig, F., Latorre, B., Peña-Gallardo, M., et al. (2017). A High Resolution Dataset of Drought Indices for Spain. <em>Data</em>, <em>2</em>(3), 22. https://doi.org/10.3390/data2030022
本数据集涵盖1961年至2018年期间，西班牙本土及巴利阿里群岛用于突发干旱分析的高空间分辨率（1.21 km²）、周度频次的NetCDF格式数据，包含标准化降水蒸散指数（Standardized Precipitation Evapotranspiration Index，SPEI）及其计算所需的气象数据[即降水与参考蒸散量（reference evapotranspiration，ETo）]。 降水及ETo数据集依托西班牙国家气象局（Agencia Estatal de Meteorología, AEMET）的全部逐日观测降水、最高与最低气温、相对湿度、日照时数（作为太阳辐射的替代指标）及风速数据构建。研究采用FAO-56彭曼-蒙特斯方程（R. G. Allen等，1998）计算参考蒸散量，该指标是可在时空维度上进行对比的大气蒸发需求（atmospheric evaporative demand, AED）量化参数。 数据集开发与验证的更多细节已在Vicente-Serrano等人（2017）的研究中详述。本数据集以1个月为时间尺度计算SPEI，所用方法源自Vicente-Serrano等人（2010）提出的研究方案。 参考文献： 1. Allen, R. G., Pereira, L. S., Raes, D., & Smith, M. (1998). 《作物蒸散：作物需水量计算指南》（Crop Evapotranspiration: Guidelines for Computing Crop Water Requirements）。 2. Vicente-Serrano, S. M., Beguería, S., & López-Moreno, J. I. (2010). 响应全球变暖的多尺度干旱指数：标准化降水蒸散指数（A multiscalar drought index sensitive to global warming: The standardized precipitation evapotranspiration index）. 《气候杂志》（Journal of Climate）, 23(7), 1696–1718. https://doi.org/10.1175/2009JCLI2909.1 3. Vicente-Serrano, S. M., Tomas-Burguera, M., Beguería, S., Reig, F., Latorre, B., Peña-Gallardo, M., 等. (2017). 西班牙高分辨率干旱指数数据集（A High Resolution Dataset of Drought Indices for Spain）. 《数据》（Data）, 2(3), 22. https://doi.org/10.3390/data2030022
