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Space and time behavior of climatic hazard of low temperature for single rice crop in the mid latitude
Author(s) -
Mariani Luigi,
Parisi Simone Gabriele,
Cola Gabriele
Publication year - 2009
Publication title -
international journal of climatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.58
H-Index - 166
eISSN - 1097-0088
pISSN - 0899-8418
DOI - 10.1002/joc.1830
Subject(s) - climatology , low latitude , hazard , geography , northern hemisphere , latitude , boreal , environmental science , crop , tropics , physical geography , ecology , forestry , geology , biology , geodesy , archaeology
Rice is a crop of tropical origin and therefore very sensitive to low temperatures, particularly during the crucial phase of floral differentiation. A World survey on climatic hazard of low temperatures during this phase was carried out on the basis of National Centers for Environmental Prediction (NCEP) reanalysis temperature data at 850 hPa. The spatial behavior of risk in analysed areas shows high risk for Australia, moderate one for Europe, South America and East Asia, whereas a very low or null risk is shown for North Africa, South Brazil, Iran, Korea and Louisiana. Results show that the level of risk for many regions of the Boreal hemisphere is substantially lowered after the breakpoint of 1981, whereas a more stable situation of risk is observed in the Austral one and particularly in Australia. A global map of risk was also produced and possible limitations of the selected approach are finally discussed. Copyright © 2008 Royal Meteorological Society