Distribution of Articles published per year
(2006 - 2019)
(2006 - 2019)
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Article 0 Reads 0 Citations The impact of drought on the productivity of two rainfed crops in Spain Published: 09 January 2019
Natural Hazards and Earth System Sciences Discussions, doi: 10.5194/nhess-2019-1
Drought events are of great importance in most Mediterranean climate regions because of the diverse and costly impacts they have in various economic sectors and on the environment. The effects of this natural hazard on rainfed crops are particularly evident. In this study the impacts of drought on two representative rainfed crops in Spain (wheat and barley) were assessed. As the agriculture sector is vulnerable to climate, it is especially important to identify the most appropriate tools for monitoring the impact of the weather on crops, and particularly the impact of drought. Drought indices are the most effective tool for that purpose. Various drought indices have been used to assess the influence of drought on crop yields in Spain, including the standardized precipitation and evapotranspiration index (SPEI), the standardized precipitation index (SPI), the Palmer drought indices (PDSI, Z-Index, PHDI, PMDI), and the standardized Palmer drought index (SPDI). Two sets of crop yield data at different spatial scales and temporal periods were used in the analysis. The results showed that drought indices calculated at different time scales (SPI, SPEI) most closely correlated with crop yield. The results also suggested that different patterns of yield response to drought occurred depending on the region, period of the year, and the drought time scale. The differing responses across the country were related to season and the magnitude of various climate variables.
Article 0 Reads 0 Citations Complex influences of meteorological drought time-scales on hydrological droughts in natural basins of the contiguous Un... Published: 01 January 2019
Journal of Hydrology, doi: 10.1016/j.jhydrol.2018.11.026
Article 1 Read 0 Citations Response of crop yield to different time-scales of drought in the United States: Spatio-temporal patterns and climatic a... Published: 01 January 2019
Agricultural and Forest Meteorology, doi: 10.1016/j.agrformet.2018.09.019
Article 0 Reads 0 Citations Spatial assessment of the performance of multiple high‐resolution satellite‐based precipitation datasets over the Middle... Published: 12 December 2018
International Journal of Climatology, doi: 10.1002/joc.5968
Article 0 Reads 0 Citations A high-resolution spatial ass essment of the impacts of drought variability on vegetation activity in Spain from 1981 to... Published: 27 November 2018
Natural Hazards and Earth System Sciences Discussions, doi: 10.5194/nhess-2018-356
Drought is a major driver of vegetation activity in Spain, with significant impacts on crop yield, forest growth, and the occurrence of forest fires. Nonetheless, the sensitivity of vegetation to drought conditions differs largely amongst vegetation types and climates. We used a high-resolution (1.1km) spatial dataset of the Normalized Difference Vegetation Index (NDVI) for the whole Spain spanning the period from 1981 to 2015, combined with a another newly developed dataset of the Standardized Precipitation Evapotranspiration Index (SPEI) to assess the sensitivity of vegetation types to drought across Spain. In specific, this study explores the drought time scales at which vegetation activity shows its highest response to drought severity at different moments of the year. Results demonstrate that − over large areas of Spain − vegetation activity is controlled largely by the interannual variability of drought. More than 90% of the land areas exhibited statistically significant positive correlations between the NDVI and the SPEI during dry summers (JJA). Nevertheless, there are some considerable spatio-temporal variations, which can be linked to differences in land cover and aridity conditions. In comparison to other climatic regions across Spain, results indicate that vegetation types located in arid regions showed the strongest response to drought. Importantly, this study stresses that the time scale at which drought is assessed is a dominant factor in understanding the different responses of vegetation activity to drought.
Article 0 Reads 0 Citations The Influence of Climate and Land-Cover Scenarios on Dam Management Strategies in a High Water Pressure Catchment in Nor... Published: 16 November 2018
Water, doi: 10.3390/w10111668
This paper evaluates the response of streamflow in a Mediterranean medium-scaled basin under land-use and climate change scenarios and its plausible implication on the management of Boadella–Darnius reservoir (NE Spain). Land cover and climate change scenarios supposed over the next several decades were used to simulate reservoir inflow using the Regional Hydro-Ecologic Simulation System (RHESsys) and to analyze the future impacts on water management (2021–2050). Results reveal a clear decrease in dam inflow (−34%) since the dam was operational from 1971 to 2013. The simulations obtained with RHESsys show a similar decrease (−31%) from 2021 to 2050. Considering the ecological minimum flow outlined by water authorities and the projected decrease in reservoir’s inflows, different water management strategies are needed to mitigate the effects of the expected climate change.