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 50
- Downloads 0
The importance of hourly nutrient concentration variability in terms of assessment of the surface water state in Słupia pilot river
Water eutrophication still causes many environmental and social problems, and so better quantification of the amount of nutrient loads discharged into surface waters is required. The basis for eutrophication analysis is...
Maximum daily rainfall analysis at selected meteorological stations in the upper Lusatian Neisse River basin
The scope of this study was to assess the usefulness of top probability distributions to describe maximum rainfall data in the Lusatian Neisse River basin, based on eight IMWM-NRI meteorological stations. The research ma...
Causes of periodical rainfall distribution and long-term forecast of precipitation for Lankaran, Azerbaijan
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...
eBalticGrid - an interactive platform for the visualisation of results from a high-resolution operational Baltic Sea model
In recent years, modelling has been one of the fastest growing fields of science. Ocean, ice and atmospheric models have become a powerful tool that has supported many scientific fields during the last few decades. Our w...
The evaluation of hydrodynamic balance at the Wkra River estuary
The river bed stability analysis at the Wkra estuary reach were presented in this paper. When a flood appears, channel and river bed erosion can reach a significant size. During such a situation, flow and water velocity...