A handy little R function for computing Hargreaves potential evapotranspiration at the daily scale. # Compute Hagreaves daily pot. evapotranspiration, based on: # tmin: a vector of minimum daily temperatures (ºC) # tmax: a vector of maximum daily temperatures (ºC) # times: a vector of dates corresponding to the temperature observations (POSIXlt) # lat: latitude of the […]
Archivos de la categoría: Ecohydrology and Agroclimatology
On the news
Some of our results concerning the study of rainfall erosivity and its temporal trends caught the attention of the media in Spain: February 10th, Aragón Noticias 1 (14:00 h) and Aragón Noticias 2 (20:30 h), 1′30″ clip on soil erosivity experiments and trends in the Ebro depresión. February 4th, SINC (a news agency specialized in Spanish […]
SPEIbase: A Global 0.5° gridded SPEI dataset
We have just made public a global drought dataset based on the SPEI (Standardized Precipitation-Evapotranspiration Index), for the period 1901–2006. I’m not giving much information here, because all the details are described in the SPEI base web site.
The standardised precipitation-evapotranspiration index (SPEI)
This post is just to mention our recent papers devoted to describing a new drought index, the Standardised Precipitation-Evapotranspiration Index (SPEI). In the SPEI web site we discuss the motivation for a new index, describe the calculation process and give some examples. A software, SPEIcalc, has been created to automatically calculate the SPEI over a wide range of time […]
