Title
Mapping seasonal and annual extreme precipitation over the Peruvian Andes
Date Issued
01 December 2018
Access level
metadata only access
Resource Type
journal article
Author(s)
Domínguez-Castro F.
Vicente-Serrano S.M.
López-Moreno J.I.
Azorin-Molina C.
El Kenawy A.
Tomas-Burguera M.
Navarro-Serrano F.
Peña-Gallardo M.
Gimeno L.
Nieto R.
Publisher(s)
John Wiley and Sons Ltd
Abstract
Seasonal and annual extreme precipitation over the Peruvian Andes have been mapped for the first time. Maps were developed using the most complete, quality-controlled and homogenous daily precipitation records in Peru from 1973 to 2016. For each observed rain gauge series, we defined parameters as the de-clustered daily intensity, total precipitation duration, total magnitude and dry-spell length. Then, we fitted the seasonal and annual series of these variables to a Generalized-Pareto distribution using a peak-over-threshold approach. We estimated the distribution parameters and validated the performance of different thresholds to obtain the best estimation of precipitation probability. We also mapped the distribution parameters obtained for the different meteorological stations using the universal kriging algorithm, accounting for elevation and the distance to the Pacific Ocean as co-variables. The accuracy of the extreme precipitation maps for a period of 25 and 50 years were validated using a jack-knife approach. Some of the maps show strong uncertainty given the random spatial distribution of the variables as a consequence of the complex topography and climate of the region. Nevertheless, the maps show a useful general assessment of the spatial distribution of the precipitation hazard probability over the region, providing a good agreement with the estimations obtained in the meteorological stations for some variables and time periods analysed. Extreme precipitation maps over this high-complex terrain of Peru are of key importance for flood risk assessment, water resources management, crop yield, soil conservation and human settlements.
Start page
5459
End page
5475
Volume
38
Issue
15
Language
English
OCDE Knowledge area
Investigación climática
Scopus EID
2-s2.0-85052843210
Source
International Journal of Climatology
ISSN of the container
08998418
Sponsor(s)
This work was supported by the research projects PCIN-2015-220 and CGL2014-52135-C03-01 financed by the Spanish Commission of Science and Technology and FEDER, IMDROFLOOD financed by the Water Works 2014 co-funded call of the European Commission and INDECIS, financed by the ERA-NET Cofund for Climate Services of the European Research Area for Climate Services. Marina Peña-Gallardo was granted by the Spanish Ministry of Economy and Competitiveness and Miquel Tomas-Burguera and Francisco Navarro-Serrano were supported by a doctoral grant by the Spanish Ministry of Education, Culture and Sport. information European Commission, Grant/Award Number: Water Works 2014 IMDROFLOOD; Ministerio de Educación, Cultura y Deporte; Secretaría de Estado de Investigación, Desarrollo e Innovación, Grant/Award Number: PCIN-2015-220 and CGL2014-52135-C03-01This work was supported by the research projects PCIN-2015-220 and CGL2014-52135-C03-01 financed by the Spanish Commission of Science and Technology and FEDER, IMDROFLOOD financed by the Water Works 2014 co-funded call of the European Commission and INDECIS, financed by the ERA-NET Cofund for Climate Services of the European Research Area for Climate Services. Marina Peña-Gallardo was granted by the Spanish Ministry of Economy and Competitiveness and Miquel Tomas-Burguera and Francisco Navarro-Serrano were supported by a doctoral grant by the Spanish Ministry of Education, Culture and Sport.
Sources of information: Directorio de Producción Científica Scopus