Causes of periodical rainfall distribution and long-term forecast of precipitation for Lankaran, Azerbaijan

• Autorzy: Mammadov A. , Rajabov R. , Casanova N.

Identyfikatory

DOI

10.26491/mhwm/89763

• Języki publikacji: EN

Abstrakty

EN

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 - 1151, 1306 and 661 mm, respectively, were measured. In Lankaran 2061 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.

Słowa kluczowe

EN

rainfall distribution; synoptic processes; atmospheric forces; harmonic analysis; baric gradient

PL

opady; rozkład opadów; prognoza długoterminowa; Azerbejdżan

• Wydawca: Instytut Meteorologii i Gospodarki Wodnej - Państwowy Instytut Badawczy
• Czasopismo: Meteorology Hydrology and Water Management. Research and Operational Applications
• Rocznik: 2018
• Tom: Vol. 6, Iss. 2
• Strony: 39--43
• Opis fizyczny: Bibliogr. 4 poz., rys.

Twórcy

autor

Mammadov A.

• Baku State University, Academic Zahid Khalilov Street 23, AZ 1148, Baku, Republic of Azerbaijan

autor

Rajabov R.

• Baku State University, Academic Zahid Khalilov Street 23, AZ 1148, Baku, Republic of Azerbaijan

autor

Casanova N.

• Baku State University, Academic Zahid Khalilov Street 23, AZ 1148, Baku, Republic of Azerbaijan

Bibliografia

• Bagirov N.А., 1965, On monthly rainfall distributions, (Scientific Works), SİP, 130, 3-21.
• Mamedov А.S., Mamedova А.R., 2010, Space-time structure of atmospheric rainfall in Azerbaijan territory, «Poisk», Natural and Technical Sciences, 1, 153-158.
• Khvichiya M.S., 1971, Atmosphere rainfall: climate resources of Georgia, ZakNİQМİ, 44 (50), 262-271.
• Shver T.А., 1975, Unequal rainfall distribution as the main landscape indicator, L.: BGR (Scientific works), 341, 87-97.

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).