Detection of Variations in Air Temperature at Different Time Scales During the Period 1889–1998 at Firenze, Italy |
| |
| Authors: | P Vijaya Kumar Marco Bindi Alfonso Crisci Giampiero Maracchi |
| |
| Institution: | (1) Central Research Institute for Dryland Agriculture, Santoshnagar, Saidabad (P.O.), Hyderabad, 500059, Andhra Pradesh, India;(2) DISAT-UNIFI, P.le delle Cascine 18, 50144, Firenze, Italy;(3) LaMMA-Laboratorio per la Meteorologia, Climatologia e la Modellistica Ambientale, Campi Bisenzio, Italy;(4) IATA-CNR, P.le delle Cascine 18, 50144 Firenze, Italy |
| |
| Abstract: | In an attempt to contribute to studies on global climatic change, 110 years of temperature data for Firenze, Italy, were analysed.
Means and trends of annual and monthly temperatures (minimum, maximum and average) were analysed at three different time scales:
short (20 years), medium (36–38 years) and long (55 years). Comparative changes in extreme events viz. frosts in the first and second parts of the 20th century were also analysed. At short time scales, climatic change was found
in minimum and average temperatures but not in maximum temperatures. At all three time scales, the annual means of minimum,
maximum and average temperatures were significantly warmer in the last part than in the early part of the 20th century. The
monthly mean temperatures showed significant warming of winter months. Over the last four decades, minimum, maximum and average
temperatures had warmed by 0.4, 0.43 and 0.4 ∘C per decade, respectively, and if this trend continues, they will be warmer
by 4 ∘C by the end of the 21st century. The significant decline in days with subzero temperatures and frosts in the last half
of the 20th century, further substantiated the occurrence of climate change at this site. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
