We analyzed the temporal evolution of vegetation activity on various land cover classes in the Spanish Pyrenees for the period 1984 to 2007. Two time series of the normalized difference vegetation index (NDVI) were used, corresponding to March (early spring) and August (end of summer). The series were generated from Landsat TM and Landsat ETM+ images, […]
Archivos del autor: sbegueria
Article: Mediterranean water resources in a global change scenario
Mediterranean areas of both southern Europe and North Africa are subject to dramatic changes thatwill affect the sustainability, quantity, quality, and management ofwater resources. Most climate models forecast an increase in temperature and a decrease in precipitation at the end of the 21st century. This will enhance stress on natural forests and shrubs, and will result […]
Article: The extreme winter of 2010 over the Iberian Peninsula
The winter of 2010 registered the most extreme negative value of the North Atlantic Oscillation (NAO) index since the beginning of systematic instrumental records. The anomalous pressure gradient in the North Atlantic region steered a large number of low pressure systems via an unusually southern path, directly influencing Iberia and northern Africa. Large areas of Iberia-especially […]
Uses of rainfall spectrum data
The scientific interest in rainfall spectrum (its drop size distribution, DSD) is double. On one hand it provides information about cloud physics and rainfall generating processes. On the other hand, the DSD controls relevant rainfall properties such as its kinetic energy (relevant for soil erosion studies), the reflectivity of microwaves (relevant for the remote sensing […]
