Trend analysis of precipitation time series in Greece and their relationship with circulation using surface and satellite data: 1955–2001

Feidas, H.; Makrogiannis, T. J.; Bora-Senta, E.

doi:10.1007/s00704-006-0200-5

Cited by 203 publications

(174 citation statements)

References 60 publications

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“…An annual decrease was reported in regional analyses in eastern (Giuffrida and Conte, 1989;Maheras and Kolyva-Machera, 1990;Amanatidis et al, 1993;Kutiel et al, 1996;Feidas et al, 2007), central (Piervitali et al, 1998;Delitala et al, 2000;Brunetti et al, 2001a,b), and western areas of the Mediterranean basin (Esteban-Parra et al, 1998;De Luis et al, 2000). The decrease in precipitation around the Mediterranean basin has been related to global warming and changes in pressure gradients between the islands of the Azores and Iceland, associated with the North Atlantic oscillation (Palutikof, 1996;Houghton et al, 2001).…”

Section: Discussionmentioning

confidence: 89%

Seasonal precipitation trends in the Mediterranean Iberian Peninsula in second half of 20th century

Luis¹,

Gonzalez‐Hidalgo²,

Longares³

et al. 2008

Intl Journal of Climatology

123

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This is a study of the changes in annual and seasonal precipitation amounts and variability, during the period 1951-2000, using MOPREDA MES . This dataset includes 1113 complete and homogeneous monthly precipitation time series from the Mediterranean Iberian Peninsula (IP), and corresponds to the five official Spanish hydrological divisions which drain into the Mediterranean Sea. The time series of annual and seasonal precipitation were used to test for trends. The absolute value of the anomaly time series was also tested for trends to identify changes in interannual variability of precipitation. The significance of these changes was assessed using the non-parametric Spearman rank test. The intensities of observed changes, both on mean values and variability, were estimated by using linear regression techniques. Finally, we analysed the area affected by different trends by using raster maps and spatial statistics, in addition to calculating the global balances for the five hydrological divisions. We detected high variability in precipitation regimes and conditions in the study area; nevertheless, a decrease in seasonal and annual precipitation has predominated in the east of the IP during the second half of the 20th century. On an annual scale, precipitation has diminished over 90.1% of the study area. Additionally, a high percentage of the territory was affected by diminishing precipitation at a seasonal level: 85% (of territory) in summer, 82% in spring, 64% during winter and 61% in autumn. Taking the study area as a whole, seasonal precipitation decreases are ranked as follows: summer (−22.5%), spring (−19.3%), winter (−7.3%), and autumn (−5.2%), with a decrease in the value of the global mean annual precipitation −12.4%. We also detected an increase of precipitation variability in winter (+23.5%) and summer (+11.4%), and a decrease in autumn and spring (−14.9 and −16.8%, respectively) with a global mean value of +7.8%.

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Section: Discussionmentioning

confidence: 89%

Seasonal precipitation trends in the Mediterranean Iberian Peninsula in second half of 20th century

Luis¹,

Gonzalez‐Hidalgo²,

Longares³

et al. 2008

Intl Journal of Climatology

123

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“…An annual decrease was reported in regional analyses in eastern (Giuffrida and Conte, 1989;Maheras and Kolyva-Machera, 1990;Amanatidis et al, 1993;Kutiel et al, 1996;Feidas et al, 2007), central (Piervitali et al, 1998;Delitala et al, 2000;Brunetti et al, 2001a,b) and western areas of the Mediterranean basin (Esteban-Parra et al, 1998;De Luís et al, 2000). Notwithstanding, the aforementioned research projects did not tend to include the 1951-2000 global period, and the average spatial density of observations is low, thus spatial variability might therefore not be correctly identified.…”

Section: Monthly Precipitation Trends On the Eastern Iberian Peninsulamentioning

confidence: 87%

Monthly precipitation trends on the Mediterranean fringe of the Iberian Peninsula during the second‐half of the twentieth century (1951–2000)

González‐Hidalgo¹,

López-Bustins

Štěpánek

et al. 2008

Intl Journal of Climatology

164

137

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ABSTRACT:We analysed monthly precipitation trends on the eastern Mediterranean fringe of the Iberian Peninsula (IP) by means of a new monthly precipitation database [Monthly Precipitation Dataset, Mediterranean Spain (MOPREDA MES )]. This database was created following an exhaustive quality control of the archives from the Meteorological Agency of Spain (Instituto Nacional de Meteorología, INM), and comprises 1113 complete and homogeneous monthly precipitation series , covering 180 000 km 2 (one-third of IP area). The new data set currently offers the highest spatial density of stations on the IP and around the Mediterranean Sea (1 station/150-200 km 2 ), and includes available information at 1500 m asl.The analyses of monthly precipitation trends indicate high spatial and temporal variability. No global trend in the study area was found, except for March, when significant negative trends affect the whole study area. Trends for winter months (December-January-February) are dominated by an East-West gradient with a latitudinal temporal shift. Positive trends are mainly located in coastland areas and negatives ones predominate inland. April shows a North-positive South-negative gradient, and the reverse is true for June and September. Negative trends are dominant in October over most of the study area, except for the Pyrenees area. July and August show the most complex spatial distribution pattern, with well-delimited areas of positive trends to the south and northwest. We generally detected no significant trends in May and November.In order to analyse the nature of rainfall variability in the study area, we also studied the synchronous influence of different low-variability modes [the North Atlantic Oscillation (NAO), the Mediterranean Oscillation (MO) and the Western Mediterranean Oscillation (WeMO)]. On the Mediterranean fringe of the IP precipitation is mainly related to negative phases of the three low-frequency variability patterns analysed, and the MO and the WeMO emerge as predominant teleconnection patterns. These results suggest that monthly variations in rainfall may result from the simultaneous effects of different atmospheric modes of low variability, especially those linked to the Mediterranean region.Studies making use of high-density precipitation databases, as is the case in this paper, are useful for a better understanding of precipitation behaviour in a complex area like the Mediterranean fringe of the IP. The results also provide valuable information for downscaling and hydrological management.

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“…Changes in the surrounding environment are mostly related to the urbanization of the area. NOA's precipitation series was found to be homogeneous from 1890 to 1985 (Katsoulis and Kambezidis, 1989), from 1900 to 1999 (Pnevmatikos and Katsoulis, 2006) and from 1955 to 2001 (Feidas et al ., 2007), using several statistical methods and homogeneity tests.…”

Section: Homogeneity Testsmentioning

confidence: 99%

“…Different periods of the record have been analysed by several authors in studies concerning precipitation characteristics in Athens or the Greek and Mediterranean area, for instance: Katsoulis and Kambezidis (1989), period:1858-1985Pnevmatikos and Katsoulis (2006), period: 1900-1999Nastos and Zerefos (2007), period 1891-2004Feidas et al . (2007Feidas et al .…”

Section: Introductionmentioning

confidence: 99%

Observed and projected precipitation variability in Athens over a 2.5 century period

Founda

Giannakopoulos

Pierros

et al. 2013

Atmospheric Science Letters

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The observed and projected precipitation variability in Athens is assessed for a 2.5 century period. The observed variability is examined using the 150-year historical record of the National Observatory of Athens, while future variability using an ensemble of regional climate models. A good agreement between observations and the model ensemble was found for annual and seasonal precipitation. The model ensemble overestimated the number of rainy days and precipitation amount corresponding to light precipitation and underestimated them corresponding to moderate-heavy precipitation. A 35% decrease in total annual precipitation coupled with an increase in extreme precipitation was projected by the model ensemble up to 2100.

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Trend analysis of precipitation time series in Greece and their relationship with circulation using surface and satellite data: 1955–2001

Cited by 203 publications

References 60 publications

Seasonal precipitation trends in the Mediterranean Iberian Peninsula in second half of 20th century

Seasonal precipitation trends in the Mediterranean Iberian Peninsula in second half of 20th century

Monthly precipitation trends on the Mediterranean fringe of the Iberian Peninsula during the second‐half of the twentieth century (1951–2000)

Observed and projected precipitation variability in Athens over a 2.5 century period

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