Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
The impact of large-scale circulation patterns on summer yields in IP
Year:2014
Research Areas
  • Earth sciences,
  • Meteorology,
  • Agriculture,
  • Engineering
Information
Abstract
Large-scale circulations patterns (ENSO, NAO) have been shown to have a significant impact on seasonal weather, and therefore on crop yield over many parts of the world(Garnett and Khandekar, 1992; Aasa et al., 2004; Rozas and Garcia-Gonzalez, 2012). In this study, we analyze the influence of large-scale circulation patterns and regional climate on the principal components of maize yield variability in Iberian Peninsula (IP) using reanalysis datasets. Additionally, we investigate the modulation of these relationships by multidecadal patterns. This study is performed analyzing long time series of maize yield, only climate dependent, computed with the crop model CERES-maize (Jones and Kiniry, 1986) included in Decision Support System for Agrotechnology Transfer (DSSAT v.4.5). To simulate yields, reanalysis daily data of radiation, maximum and minimum temperature and precipitation were used. The reanalysis climate data were obtained from National Center for Environmental Prediction (20th Century and NCEP) and European Centre for Medium-Range Weather Forecasts (ECMWF) data server (ERA 40 and ERA Interim). Simulations were run at five locations: Lugo (northwestern), Lerida (NE), Madrid (central), Albacete (southeastern) and Córdoba (S IP) (Gabaldón et al., 2013). From these time series standardized anomalies were calculated. Afterwards, time series were time filtered to focus on the interannual-to-multiannual variability, splitting up in two components: low frequency (LF) and high frequency (HF) time scales. The principal components of HF yield anomalies in IP were compared with a set of documented patterns. These relationships were compared with multidecadal patterns, as Atlanctic Multidecadal Oscillations (AMO) and Interdecadal Pacific Oscillations (IPO). The results of this study have important implications in crop forecasting. In this way, it may have a positive impact on both public (agricultural planning) and private (decision support to farmers, insurance companies) sectors, to take advantage of favorable conditions or reduce the effect of adverse conditions.
International
Si
Congress
European Geosciences Union. General Assembly 2014
960
Place
Viena, Austria
Reviewers
Si
ISBN/ISSN
1607-7962
Start Date
27/04/2014
End Date
02/05/2014
From page
1
To page
1
Geophysical Research Abstracts Vol. 16, EGU2014-11943, 2014
Participants
  • Autor: Mirian Irene Capa Morocho (UPM)
  • Autor: Belen Rodriguez-Fonseca (Universidad Complutense de Madrid)
  • Autor: Margarita Ruiz Ramos (UPM)
Research Group, Departaments and Institutes related
  • Creador: Departamento: Producción Agraria
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