Caribbean Evaporative Demand Drought Index

ERA5-Land derived pentad evaporative demand drought index (EDDI) for the Caribbean from 1981-2021. EDDI is calculated following Hobbins et al. 2016 and the underlying input data are acquired from ERA5-Land (Muñoz-Sabater 2021). This version of EDDI calculates hourly ASCE reference evapotranspiration for a short reference surface following Allen et al. 2005. Leap days have been removed.

This dataset was produced by first creating hourly reference evapotranspiration for a short reference crop for every grid point in the study domain following the equations laid out in Allen et al. 2005.

Allen, R. G., I. A. Walter, R. L. Elliott, T. A. Howell, D. Itenfisu, M. E. Jensen, and R. L. Snyder, eds., 2005: The ASCE Standardized Reference Evapotranspiration Equation. American Society of Civil Engineers. 

EDDI was calculated using 5-day (e.g. pentad) accumulated reference ET following Hobbins et al. 2016.

Hobbins, M. T., Wood, A., McEvoy, D. J., Huntington, J. L., Morton, C., Anderson, M., & Hain, C. (2016). The Evaporative Demand Drought Index. Part I: Linking Drought Evolution to Variations in Evaporative Demand, Journal of Hydrometeorology, 17(6), 1745-1761. https://journals.ametsoc.org/view/journals/hydr/17/6/jhm-d-15-0121_1.xml 

For more information regarding the hourly ERA5-Land inputs to the reference ET equations, please see Munoz-Sabater et al. 2021.

J. Muñoz-Sabater, Dutra, E., Agustí-Panareda, A., Albergel, C., Arduini, G., Balsamo, G., Boussetta, S., Choulga, M., Harrigan, S., Hersbach, H., Martens, B., Miralles, D. G., Piles, M., Rodríguez-Fernández, N. J., Zsoter, E., Buontempo, C., and Thépaut, J.-N.: ERA5-Land: A state-of-the-art global reanalysis dataset for land applications, Earth Syst. Sci. Data,13, 4349–4383, 2021. https://doi.org/10.5194/essd-13-4349-2021.

基于ERA5-Land数据集的，针对加勒比地区1981年至2021年的五日蒸发需求干旱指数（EDDI）。该指数的计算遵循Hobbins等人于2016年的方法，其基础输入数据来源于ERA5-Land（Muñoz-Sabater，2021年）。本版本的EDDI采用Allen等人于2005年提出的短期参考表面每小时参考蒸散量计算方法。闰日已被去除。该数据集的生成首先根据Allen等人于2005年提出的方程式，为研究区域内的每个网格点创建了针对短期参考作物的每小时参考蒸散量。EDDI的计算采用了Hobbins等人于2016年提出的基于五日（例如五日时段）累积参考蒸散量的方法。

Allen, R. G., I. A. Walter, R. L. Elliott, T. A. Howell, D. Itenfisu, M. E. Jensen, and R. L. Snyder, eds., 2005: The ASCE Standardized Reference Evapotranspiration Equation. American Society of Civil Engineers.

EDDI的计算使用Hobbins等人于2016年提出的5日（例如五日时段）累积参考ET。

Hobbins, M. T., Wood, A., McEvoy, D. J., Huntington, J. L., Morton, C., Anderson, M., & Hain, C. (2016). The Evaporative Demand Drought Index. Part I: Linking Drought Evolution to Variations in Evaporative Demand, Journal of Hydrometeorology, 17(6), 1745-1761. https://journals.ametsoc.org/view/journals/hydr/17/6/jhm-d-15-0121_1.xml

有关参考ET方程式所需的小时ERA5-Land输入数据的更多信息，请参阅Muñoz-Sabater等人于2021年的研究。

J. Muñoz-Sabater, Dutra, E., Agustí-Panareda, A., Albergel, C., Arduini, G., Balsamo, G., Boussetta, S., Choulga, M., Harrigan, S., Hersbach, H., Martens, B., Miralles, D. G., Piles, M., Rodríguez-Fernández, N. J., Zsoter, E., Buontempo, C., and Thépaut, J.-N.: ERA5-Land: A state-of-the-art global reanalysis dataset for land applications, Earth Syst. Sci. Data, 13, 4349–4383, 2021. https://doi.org/10.5194/essd-13-4349-2021.