The interannual precipitation variability in the southern part of Iran as linked to large-scale climate modes

Pourasghar, Farnaz; Tozuka, Tomoki; Jahanbakhsh, S; Sarraf, Behrooz Sari; Ghaemi, Hooshang; Yamagata, Toshio

doi:10.1007/s00382-012-1357-5

Cited by 42 publications

(33 citation statements)

References 20 publications

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“…Pourasghar et al . () demonstrated that spring precipitation variability in the southern half of Iran is influenced by the WeMO, which is confirmed with our results at which more than 50% of the stations show a significant linkage with the WeMO. For summer, the PDO, AMO, WeMO patterns show overall significant correlations with precipitation (for five northern humid stations), the only exception being Babolsar for PDO and AMO, and Rasht for WeMO.…”

Section: Resultssupporting

confidence: 92%

“…Pourasghar et al . () also found a significant relationship between the Indian Ocean Dipole index and precipitation variation during autumn and early winter in the southern parts of Iran. The results of this study show a significant negative correlation between the SOI and autumn precipitation anomaly in the north, northwest, and west of the country which is statistically significant for most of the stations (i.e., Ramsar, Rasht, Bandar‐Anzali, Khoy, Saghez, Sanandaj, Kermanshah, Hamedan, Arak).…”

Section: Resultsmentioning

confidence: 73%

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Daily Precipitation Extremes in Iran: Decadal Anomalies and Possible Drivers

Tabari

Willems

2016

J American Water Resour Assoc

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This study focuses on the empirical statistical analysis of the anomalies in daily precipitation extremes by applying the quantile perturbation method (QPM) to data from 31 Iranian weather stations during the period between 1961 and 2005. The possible causes behind the anomalies in precipitation extremes are identified by analyzing their relationship with the anomalies in eight atmospheric indices (i.e., NAO, SOI, PDO, AMO, NCP, DMI, WeMO, SSN). In terms of decadal oscillations, the country was generally wet in the 1960s and 1970s with most stations exhibiting periods of higher quantile perturbations, whereas lower quantile perturbations were dominant in the 1980s and 1990s. The highest perturbation in extreme precipitation quantiles prevails in Central Iran during the early 1980s, in which the quantiles are about 50% higher than the ones based on the full time series. The frequency of significant precipitation anomalies for winter season was greater than that for spring and autumn seasons. For the summer season, the humid region in North Iran demonstrates strong positive anomalies. The results highlight the noticeable role of large‐scale climatic factors in the anomalous behavior of precipitation extremes in Iran. The atmospheric drivers of the quantile anomalies in extreme precipitation were found to differ from one season to another.

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Section: Resultssupporting

confidence: 92%

Section: Resultsmentioning

confidence: 73%

Daily Precipitation Extremes in Iran: Decadal Anomalies and Possible Drivers

Tabari

Willems

2016

J American Water Resour Assoc

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“…Mean annual temperature is 22.9°C and the mean values of coldest and hottest months of the year are 9.9 and 33.9°C, respectively. Although storm tracks originating from the Mediterranean Sea and North Atlantic Ocean bring moisture to southern Zagros (Stevens et al 2001), it has been shown that most of the moisture over this region is brought from the Arabian and Oman Sea in the lower levels of troposphere and during the active phases of the so-called Sudan low system in winter months (Pourasghar et al 2012).…”

Section: Climate and Hydrologymentioning

confidence: 99%

Olive cultivation in the heart of the Persian Achaemenid Empire: new insights into agricultural practices and environmental changes reflected in a late Holocene pollen record from Lake Parishan, SW Iran

Djamali

Jones

Migliore

et al. 2015

Veget Hist Archaeobot

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International audienceAncient Persia witnessed one of its most prosperous cultural and socio-economic periods between 550 bc and ad 651, with the successive domination of the Achaemenid, Seleucid, Parthian and Sassanian Empires. During this period agricultural activities increased on the Iranian plateau, as demonstrated by a remarkable arboricultural expansion. However, available data are not very informative about the spatial organization of agricultural practices. The possible links between climate conditions and agricultural activities during this millennium of continuous imperial domination are also unclear, due to the lack of parallel human-independent palaeoclimatic proxies. This study presents a new late Holocene pollen-based vegetation record from Lake Parishan, SW Iran. This record provides invaluable information regarding anthropogenic activities before, during and after the empires and sheds light on (i) spatial patterning in agricultural activities and (ii) possible climate impacts on agro-sylvo-pastoral practices during this period. Results of this study indicate that arboriculture was the most prominent form of agricultural activity in SW Iran especially during the Achaemenid, Seleucid and Parthian periods. Contrary to the information provided by some Greco-Roman written sources, the record from Lake Parishan shows that olive cultivation was practiced during Achaemenid and Seleucid times, when olive cultivation was significant, at least in this basin located close to the capital area of the Achaemenid Empire. In addition, pollen from aquatic vegetation suggests that the period of the latter centuries of the first millennium bc was characterized by a higher lake level, which might have favoured cultural and socio-economic prosperity

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“…The linear relationship between ENSO and seasonal precipitation is weak over most parts of Iran. Pourasghar et al (2012) reported that the interannual precipitation variability in southern parts of Iran in autumn and early winter (late winter) is correlated with the Indian Ocean Dipole (the Mediterranean Sea).…”

mentioning

confidence: 99%

Seasonal precipitation forecast skill over Iran

Shirvani

Landman

2015

Int. J. Climatol.

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This paper examines the skill of seasonal precipitation forecasts over Iran using one twotiered model, three National Multi-Model Ensemble (NMME) models, and two coupled ocean-atmosphere or one-tiered models. These models are, respectively, the ECHAM4.5 atmospheric model that is forced with sea surface temperature (SST) anomalies forecasted using constructed analogue SSTs (ECHAM4.5-SSTCA); the IRI-ECHAM4.5-DirectCoupled, the NASA-GMAO-062012 and the NCEP-CFSv2; and the ECHAM4.

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The interannual precipitation variability in the southern part of Iran as linked to large-scale climate modes

Cited by 42 publications

References 20 publications

Daily Precipitation Extremes in Iran: Decadal Anomalies and Possible Drivers

Daily Precipitation Extremes in Iran: Decadal Anomalies and Possible Drivers

Olive cultivation in the heart of the Persian Achaemenid Empire: new insights into agricultural practices and environmental changes reflected in a late Holocene pollen record from Lake Parishan, SW Iran

Seasonal precipitation forecast skill over Iran

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