Year: 2006
Type: article
Abstract: In this paper trends of precipitation and temperature over 40 year period are analyzed over Argentina. Daily maximum and minimum surface stations temperatures from the National Weather Service of Argentina over most Argentinean provinces for 1961-2000 and precipitation are used. Temperature anomalies with respect to the 40 year mean annual cycle for each site and each data set has been computed. The decadal trend averaged over separate periods (1961-2000) for temperature is computed for every station, with an overall average computed over all the stations. Our results suggest that in Argentina (except in Patagonia) the minimum temperature increased over this 40 year by 0.06° C/decade, and most of it could be attributable to land surface effects. The maximum temperatures show a cooling trend in the observa-tions of about -0.15°C/decade, and most of it could be also due to land changes. The precipitation decadal trends averaged over three 20-years separate periods (1981-2000, 1971-1990 and 1961-1980) is computed for every station and averaged over all the sites. Results show that the precipitation trend with an increase in most of the country with the maximum values toward the northeast of the region, except into Patagonia were a trend is not observed. Also it is not possible to definitively attribute to the precipitation changes, our results suggest that increase in precipitation at least in part would tend to decrease the maxi-mum temperature and increase the minimum temperature, because precipitation con-tribute to an increase in the heat storage capacity of the surface. In Argentina the bor-der of region devoted to the practice of agriculture has extended by more than 300 Km in the last twenty years (except in Patagonia).
Language: English
Subfield: Global and Planetary Change
Field: Environmental Science
Domain: Physical Sciences
SDG: Climate action
Open Access status: green
OpenAlex ID: W7032712250