Chemical composition of precipitation at different parts of Turkey

Ayaklı, Gül
In this study major ion composition of rain water samples collected at General Directorate of Meteorology Antalya, Balıkesir and Trabzon rain sampling stations were analyzed. The major ions SO42-, NO3-, NH4+, Cl-, Ca2+, K+ and Na+ were analyzed by ion chromatography. Data generated in these stations are compared to evaluate how chemical composition of rainwater changes as air masses travel on the Anatolian plateau. Data also demonstrate how rainwater composition varies seasonally at different parts of Turkey. Reasons behind these variations are investigated using statistical tools. Multivariate statistical tool Positive Matrix Factorization was used to understand types of sources affecting precipitation composition at different locations in Turkey. As a result, four types of factors were resolved as long range transport, crustal emissions, sea salt and fertilizer usage. Similarly, trajectory statistics are used to understand locations of sources. Data evaluation heavily base on back trajectory information. Back trajectories, arriving the stations at the mid day of every sample, were collected using HYSPLIT trajectory model. HYSPLIT is 3D isentropic trajectory model developed by the US National Oceanic and Atmospheric Administration (NOAA). The model will be run at NOAA computers and results are transferred to our computers.


Ionic composition of precipitation at the Central Anatolia Turkey
Tuncer, Burcu; Bayar, Banu; Canan, Yeşilyurt; Tuncel, Süleyman Gürdal (2001-12-01)
Concentrations of major ions, SO42-, NO3-, Cl-, H+, Ca2+, K+, Mg2+, Ca2+ and conductivity were measured in approximately 300 daily, wet-only rain samples collected at a permanent rural station between 1993 and 1998. Concentrations of anthropogenic ions NH4+, SO42- and NO3- were among the highest values reported in whole EMEP network, suggesting that the Anatolian plateau is under strong influence of distant emission sources. Although transport of pollutants have significant influence on the chemical composi...
Analyses of atmospheric and marine observations along the Turkish coast
Tutsak, Ersin; Özsoy, Emin; Department of Physical Oceanography (2012)
Time series and spectral analyses are applied to meteorological data (wind velocity, air temperature, barometric pressure) and sea level measurements from a total of 13 monitoring stations along the Turkish Coast. Analyses of four-year time series identify main time scales of transport and motion while establishing seasonal characteristics, i.e. distinguishing, for instance, between winter storms and summer sea-breeze system. Marine flow data acquired by acoustic doppler current pro filers (ADCP) is also a...
Chemical composition of rainwater at EMEP station in Ankara, Turkey
Topcu, S; Incecik, S; Atımtay, Aysel (2002-11-01)
The chemical characteristics of rainfall and its seasonal variation at the EMEP (The Cooperative Programme for Monitoring and Evaluation of the Long-Range Transmission of Air Pollutants in Europe) station located in Cubuk, Ankara were studied for the period between September 1994 and December 1996. The station is located in a rural area about 50 km north of Ankara and is considered as a background station for air pollution. The rainwater samples collected were analyzed for pH, major ions concentrations and ...
Investigation of the dependence of satellite-based precipitation estimate errors to distance from the coastline Uydu Kaynakli Yaǧmur Verilerinin Hata Oranlarinin Deniz Kiyilarina Olan Uzakliǧa Baǧli Analizi
YILMAZ, MERİÇ; Amjad, Muhammad; Bulut, Burak; Yılmaz, Mustafa Tuğrul (2017-01-01)
In this study, Tropical Rainfall Measuring Mission (TRMM) 3B42 v7 satellite based rainfall data are verified by using cumulative monthly rainfall data measured at 257 stations operated by the General Directorate of Meteorology between 1998 and 2014. Long-term mean values of station-based and satellite-based rainfall data, correlation between them, Standard deviation of monthly average and anomaly components, and standard deviation of satellite based data error are analyzed. Variation of satellite-based data...
Rain water chemistry in Ankara, Turkey
Tuncel, Süleyman Gürdal (1996-08-01)
Samples of rain water were collected in Ankara for the period between September 1989 and May 1990, by using wet-only sampler. Concentrations of major cations (H+, Na+, K+, Ca2+ and NH4+) and major anions (Cl-, NO3- and SO42-) were determined for the first time in Turkey. The rain water was not acidic owing to high concentrations of alkaline soil particles in the atmosphere. However, the concentrations of acid forming ions, such as SO42- and NO3-, were higher than the concentrations expected in a typical urb...
Citation Formats
G. Ayaklı, “Chemical composition of precipitation at different parts of Turkey,” M.S. - Master of Science, Middle East Technical University, 2014.