Rainfall uncertainty in the Mediterranean: definition of the rainy season – a methodological approach

Reiser, H.; Kutiel, H.

doi:10.1007/s00704-007-0343-z

Cited by 23 publications

(14 citation statements)

References 25 publications

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“…Thus, a hydrological year instead of a calendar year should be applied to the rainfall measurements in Montenegro. This issue was widely discussed by Reiser and Kutiel (2008) and it was suggested that in regions with a Mediterranean type climate where the summer is dry or almost dry such as in Montenegro, the starting analysis date (SAD) should be 1 July and not 1 January. The intra-annual variability can be demonstrated in two ways:…”

Section: Temporal Cluster Analysismentioning

confidence: 99%

Spatial and temporal variability of rain-spells characteristics in Serbia and Montenegro

2014

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Rain spells are a key parameter in examining rainfall regime. A rain spell is defined as a series of consecutive days above a certain daily rainfall threshold (DRT). For each rain spell, its duration (RSD), yield (RSY) and average intensity (RSI), as well as their total number (NRS) in each year, were calculated.The present study analyses daily rainfall series from 22 stations representing the different regions of Serbia and Montenegro in the period 1949-2007. This study highlights the temporal variability (both inter-and intra-annual) and the complexity of the rainfall regime in both countries.In each station, all years were divided into three categories: wet, normal and dry according to their standard scores. Then, on the basis of these scores, the entire year was categorized accordingly. The various rain-spell parameters were calculated and are presented for each of these three categories. The relationships between NRS (exponential), RSY (linear) and RSI (power) with the RSD were calculated for each station and their coefficients were plotted.The entire study area was divided into three sub-regions in terms of similar annual behaviour, using the factor analysis. The regions are as follows: northern and central Serbia, eastern and southern Serbia and Montenegro.All years were grouped into several clusters, each representing a different spatial distribution. Their characteristics and probabilities are presented.Overall, Montenegro is much rainier than Serbia, having longer and more intense rain spells. Serbia, on the other hand, has more short rain spells than Montenegro and demonstrates no real summer dryness such as in Montenegro. Intra-annual variability is relatively high in both countries, slightly higher in Montenegro.

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Section: Temporal Cluster Analysismentioning

confidence: 99%

Spatial and temporal variability of rain-spells characteristics in Serbia and Montenegro

2014

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“…This model was used to determine the beginning and ending of the rainy season based on the pattern of dry and rainy days for a location using the simple total annual or growing season rainfall. In this model, it is essential to identify the shortest rainy season, or the longest dry period throughout the year in order to preserve the continuity of the rainy season (Reiser and Kutiel 2008). In order to obtain this value, the Rainy Season Length (RSL) was …”

Section: Rainfall Uncertainty Evaluation Modelmentioning

confidence: 99%

“…The Rainfall Uncertainty Evaluation Model (RUEM 5) was introduced by Reiser and Kutiel (2008). This model was used to determine the beginning and ending of the rainy season based on the pattern of dry and rainy days for a location using the simple total annual or growing season rainfall.…”

Section: Rainfall Uncertainty Evaluation Modelmentioning

confidence: 99%

Quantification of agricultural drought occurrence as an estimate for insurance programs

Aval

Hoogenboom

2014

Theor Appl Climatol

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Temporal irregularities of rainfall and drought have major impacts on rainfed cropping systems. The main goal of this study was to develop an approach for realizing drought occurrence based on local winter wheat yield loss and rainfall. The domain study included 11 counties in the state of Washington that actively grow rainfed winter wheat and an uncertainty rainfall evaluation model using daily rainfall values from 1985 to 2007. An application was developed that calculates a rainfall index for insurance that was then used to determine the drought intensity for each study year and for each study site. Evaluation of the drought intensity showed that both the 1999-2000 and 2000-2001 growing seasons were stressful years for most of the study locations, while the 2005-2006 and the 2006-2007 growing seasons experienced the lowest drought intensity for all locations. Our results are consistent with local extension reports of drought occurrences. Quantification of drought intensity based on this application could provide a convenient index for insurance companies for determining the effect of rainfall and drought on crop yield loss under the varying weather conditions of semi-arid regions.

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“…Annual heights (H) refer to the time period starting on July 1 of each year and ending on June 30 of the subsequent year [also suggested by Reiser and Kutiel (2008) for this part of the Mediterranean]. Before trend analysis, homogeneity tests were applied for the detection of possible abrupt changes in the climatic records.…”

Section: Trend Analysismentioning

confidence: 99%

Long-term precipitation variability in the Ionian Islands, Greece (Central Mediterranean): climatic signal analysis and future projections

Kalimeris

Founda

Giannakopoulos

et al. 2011

Theor Appl Climatol

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The present study examines the variability of the precipitation regime across the Ionian Islands complex, Greece (Central Mediterranean), for a period spanning more than one century. Significant negative long-term linear trends in the annual precipitation totals are observed, more pronounced in the southern parts of the studied area, while a climatic discontinuity possibly occurred during the 1970s, manifested first in the southern Ionian. Statistically significant nonlinear trends and subdecadal intermittent oscillations were detected using Monte Carlo singular spectral analysis. The correlation of the winter precipitation variability at Ionian complex with the North Atlantic Oscillation anomalies was also investigated and extended in the frequency domain. Finally, future projections were performed using an ensemble of Regional Climatic Models. Model simulations suggested a decrease of the order of ∼20% or more in the mean annual precipitation of the area by the end of the century.

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Rainfall uncertainty in the Mediterranean: definition of the rainy season – a methodological approach

Cited by 23 publications

References 25 publications

Spatial and temporal variability of rain-spells characteristics in Serbia and Montenegro

Spatial and temporal variability of rain-spells characteristics in Serbia and Montenegro

Quantification of agricultural drought occurrence as an estimate for insurance programs

Long-term precipitation variability in the Ionian Islands, Greece (Central Mediterranean): climatic signal analysis and future projections

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