Synoptic Analysis and Climate Change on Precipitation During the Growth of vitis vinifera in Hamedan Province Vineyards
Journal Title: International Journal of Farming and Allied Sciences - Year 2013, Vol 2, Issue 2
Abstract
Trend analysis of climate variables has important role to detect climate variations and changes probably. Heavy precipitation events are one of the most important factors to reduce the products and raisins exports. This research aims to analysis of trend of sea level pressure patterns during growth of vitis vinifera in heavy precipitation events in Hamedan province. For this purpose, daily precipitations of 4 synoptic stations were used from March to October and from 1993 to 2009. Sea level pressure data are extracted from www.ncdc.noaa.gov for 100 days in 2.5º*2.5º spatial resolution and 6 hours temporal resolution. The SLP patterns were computed using principal component analysis (PCA), cluster analysis (CA) and Ward linkage. Parametric methods (regression analysis and Pierson correlation coefficient) and non-parametric methods (Man-Kendall and spearman) are used and compared. The results show that there are 5 SLP patterns in heavy precipitation days during the growth of vitis vinifera. Combined European and Siberian high pressure systems –low pressure system over Iran and Black Sea high pressure system- low pressure system in the West south in Iran have a trend increasingly but the other patterns have a trend decreasingly or without trend. The role of low pressure systems in Iran is more important than ones in Arab country. Also, the role of European high pressure system is more important than Siberian system to occur the heavy precipitation events in recent years.
Authors and Affiliations
H. Nouri
Keywords
Related Articles
- EP ID EP32479
- DOI -
- Views 298
- Downloads 0
The Effect of Proline on Growth and Ionic Composition of Embryogenic Callus and Somatic Embryos of the date Palm (Phoenix dactylifera L. CV. ASHKAR) Under NACL Stress
The present work was carried out with the objective of increasing salt tolerance of date palm cv. Ashkar using tissue culture technique and exogenous application of proline. Quarters of shoot tips were cultured on MS m...
Nitrogenase effects on wheat root and leaf foliar Sabalan Cultivar
One of the most important methods of crop varieties and physiological indices of stress is influenced by changes in certain metabolites. Wheat bread (Triticum aestivum) Is Iran's most important cereal crop Compared the...
Influence of humic acid on increase yield of plants and soil properties
Humic acids are heterogeneous, which include in the same macromolecule, hydrophilic acidic functional groups and hydrophobic groups. A distinction on the effects of HAs should be made between indirect and direct effect...
Sequential BA application enhance offset formation in Aloe barbadensis Miller
The effect of Gibberellic Acid (GA3) and Benzyladenine (BA) on Aloe vera was evaluated at pot cultivation conditions. This study was performed in two factorial test based on complete random design and 4 replication wit...
Multivariate Statistical Method for Determining Interrelationships among Seed Yield and Related Characters in Mungbean
In order to investigation of interrelationships among some characters and determine the most effective these characters on Mungbean's yield under drought stress conditions, a field experiment carried out as split plot...