DOI: 10.3354/cr01287
Scopus记录号: 2-s2.0-84926510021
论文题名: Trends in surface air temperatures, precipitation and combined indices in the southeastern Iberian Peninsula (1970-2007)
作者: Fernández-Montes S. ; Rodrigo F.S.
刊名: Climate Research
ISSN: 0936577X
出版年: 2015
卷: 63, 期: 1 起始页码: 43
结束页码: 60
语种: 英语
英文关键词: Joint temperature-precipitation modes
; Land cover changes
; Maximum temperatures
; Minimum temperatures
; Precipitation
; SE Spain
; Spain02
; SPEI
; Subregional trends
Scopus关键词: agricultural intensification
; air temperature
; altitude
; annual variation
; data set
; land cover
; mountain region
; precipitation intensity
; semiarid region
; spatiotemporal analysis
; Iberian Peninsula
; Spain
英文摘要: This work evaluates recent (1970-2007) climatic changes in the southeastern Iberian Peninsula, a semi-arid region with important human pressure. The high-resolution dataset Spain02 (∼20 km) was used. This allowed us to discover local/regional signals, most of them not previously reported because of the use of coarse data or interpolation techniques. Annual precipitation has not experienced long-term changes in most of the region (80%) but showed some negative trends in the wettest mountainous NW area and slight recovery in the most arid S/SE region, mainly due to changes during winter. However, an increase in long-term droughts, examined at 4 locations, was found, which seems highly connected to a temperature increase. Both maximum and minimum temperatures (Tmax, Tmin) have increased in most of the region (in 70 and 88% of the area, respectively) at high rates (average 0.5 and 0.52° C decade-1 for Tmax and Tmin, respectively), with steepest trends in spring and summer and distinct subregional differences. Thus, the diurnal temperature range decreased in the most populated areas in the NE and the S/SW (25% of the region), whereas it mainly increased in natural and mountainous areas (15%). Combined indices showed increasing frequency of warm-dry and warm-wet days and less cold days, especially in the central W and NE. Precipitation intensity increased within warm-wet days in the transition seasons (40% of the region), suggesting enhanced convective events, even where total precipitation did not change. Besides large-scale factors, we discuss precipitation-temperature feedbacks and land cover changes in the analyzed period (i.e. increase in mountainous forested areas, urban and agricultural intensification in coastal flatlands), possibly affecting the observed signals. Given the relatively low density of long-term records from which the Spain02 was built, caution is needed in the interpretation of results, especially for temperature in altitude gradients. © Inter-Research 2015. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116502
Appears in Collections: 气候减缓与适应
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Recommended Citation:
Fernández-Montes S.,Rodrigo F.S.. Trends in surface air temperatures, precipitation and combined indices in the southeastern Iberian Peninsula (1970-2007)[J]. Climate Research,2015-01-01,63(1)