Causes of periodical rainfall distribution and long-term forecast of precipitation for Lankaran, Azerbaijan
Journal Title: Meteorology Hydrology and Water Management Research and Operational Applications - Year 2018, Vol 6, Issue 2
Abstract
Irregular rainfall distribution is receiving considerable attention. The amount of rainfall for one region can account for 500-600 mm, sometimes 1000 mm. For example, in the year 1985, Zagtala in Azerbaijan received 716 mm of rainfall, while in 1988, 2004 and 2008 − 1 151, 1 306 and 661 mm, respectively, were measured. In Lankaran 2 061 mm were measured in 1982 and 470 mm in 1999. Generally, rainfall distribution differs across the Republic of Azerbaijan. In this study, the physical side of such variations was clarified. In relation to that, the movement speed of the atmosphere in regard of the rotation of the Earth was analyzed, showing that the difference in rainfall distribution, according to the time structure, is connected to the direction change of the atmospheric movement. Generally, the reasons for atmospheric movements cannot be identified as the rotation movement of the earth, mainly because both environments show different activities. While the processes happening in the atmosphere often change, influenced by the pressure gradient, the rotation movement of the earth is more stationary. We also evaluated the rainfall forecast method for the region Lankaran. Taking into account its simplicity, the Shuster method was used. Observation data was divided into stationary and casual elements. Selection of periodicals was determined by separation of long term meteorological data into harmonic functions. By accepting the variation, the coefficient casual item was added.
Authors and Affiliations
Asger Mammadov, Rustam Rajabov, Naila Hasanova
Keywords
Related Articles
- EP ID EP544156
- DOI 10.26491/mhwm/89763
- Views 66
- Downloads 0
Regional carbon uptake of croplands in Poland between 1960 and 2009
Croplands have been identified as binding large amounts of carbon. About one third of the total area in Poland is covered by croplands. In this paper, we analyze data describing the yields and structure of crops availabl...
Long-term total solar radiation variability at the Polish Baltic coast in Kołobrzeg within the period 1964-2013
This study is based on a 50-year data series (1964-2013) of total solar radiation (G) from the Kołobrzeg - station that is located on the Polish Baltic Sea coast and is characterised by a very high level of air quality....
Heat waves in Poland in the period 1951-2015: trends, patterns and driving factors
Heat waves were analysed on the basis of maximum daily temperature from 24 meteorological stations in Poland. Heat waves are defined as the longest continuous period during which Tmax (daily maximum air temperature) is e...
Water availability in reference to water needs in Poland
On Earth water is an irreplaceable asset, and an estimate of its resource capacity is necessary. The improper selection of indicators of water resources can lead to the underestimation or overestimation of the actual res...
The impact of climatic patterns on runoff and irrigation water allocation in an arid watershed of northern Mexico
The uncertainty of water availability is the main problem in planning for water resources in watersheds of agricultural drylands. Water availability for different uses depends on the runoff that is generated in the upper...