Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
Long-term measurements of aerosol optical and physical properties over the Eastern Mediterranean: Hygroscopic nature and source regions
Date
2019-06-15
Author
Tutsak, Ersin
Koçak, Mustafa
Metadata
Show full item record
This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
Item Usage Stats
252
views
0
downloads
Cite This
Long-term aerosol optical and physical properties such as aerosol optical thickness and angstrom exponent were obtained from AERONET ground based sun sky radiometer located at the rural coastal Erdemli (36.6 degrees N, 34.3 degrees E) site in the Eastern Mediterranean from January 2000 to December 2014. Aerosol Optical Thickness (AOT) and Angstrom Exponent (alpha) exhibited a great short-term variability, varying up to couple of fold from day to day. The lowest AOT values was found in winter due to the removal of particles by wet deposition. Elevated AOT values with low alpha(440.870) was observed in spring owing to sporadic mineral dust transport from North Africa and the Middle East. High AOT at 440 nm and alpha(440-870) were characterized in summer because of high gas-to-particle conversion, sluggish air masses and absence of rain. Enhanced AOT and low alpha (0.7) and fine mode fraction (47%) were associated with air flow from North Africa and the Middle East with a slight decrease from 440 nm to 1020 nm, showing importance of coarse particles. Air flow from Mediterranean Sea, Eastern Europe, Western Europe and Turkey, on the other hand, showed comparatively higher alpha (> 1.1) and fine mode fraction (> 62%). Three classes of aerosol were identified namely non-hygroscopic dominated, moderately hygroscopic and hygroscopic dominated. Non-hygroscopic particles were dust dominated aerosol population originated from North Africa (Southern Tunisia, Western Libya, Libya/Chad border, southern Egypt northeastern Mauritania, north Mali, southern Algeria, Northwestern Niger) and the Middle East (extending from Iraq to eastern Saudi Arabia). Moderately hygroscopic particles were a mixture of mineral dust and anthropic aerosols when the dust reached receptor site after passing through industrialized and populated sites (such as Spain, France and Italy). Hygroscopic particles, however, were ascribed to nearly mesoscale formation of secondary aerosols under the prevailing summer conditions.
Subject Keywords
Aerosol physical properties
,
Hygroscopic nature
,
Source regions
,
Eastern Mediterranean
URI
https://hdl.handle.net/11511/30379
Journal
ATMOSPHERIC ENVIRONMENT
DOI
https://doi.org/10.1016/j.atmosenv.2019.03.007
Collections
Graduate School of Marine Sciences, Article
Suggestions
OpenMETU
Core
Optical and microphysical properties of the columnar Aerosol burden over the Eastern Mediterranean: Discrimination of Aerosol types
Tutsak, Ersin; Koçak, Mustafa (2020-05-15)
Optical and microphysical properties, for example, refractive index, single scattering albedo (SSA) and asymmetry factor were attained from AERONET ground based sun sky radiometer situated at rural coastal Erdemli in the Eastern Mediterranean between 2000 and 2014. On average, imaginary part of the refractive index (REFI similar to 0.007) and SSA (similar to 0.93) denoted that the aerosol composition was similar to that of Industrial/Urban aerosol type. However, the daily variation in optical and microphysi...
A 15-YEAR CLIMATOLOGY OF AEROSOL OPTICAL AND PHYSICAL PROPERTIES AND NEAR-REAL TIME MEASUREMENTS OF WATER-SOLUBLE IONS IN PM2.5 AND THEIR PRECURSOR GASES IN THE ATMOSPHERE OVER THE EASTERN MEDITERRANEAN
Tutsak, Ersin; Koçak , Mustafa; Department of Oceanography (2018-7-26)
Long-term aerosol optical and micro physical properties obtained from AERONET sun/sky radiometer situated at the rural coastal site of Eastern Mediterranean between January 2000 and December 2014 were analyzed. Moreover, concentrations of SO42-, NH4+, NO3- (in PM2.5) and their precursor gases (SO2, NH3 and HNO3) were measured with a near real-time Ambient Ion Monitor-Ion Chromatography instrument in winter and summer of 2015. Air flow arriving at 1 km and 4 from Eastern Europe and Western Europe showed a ne...
Atmospheric trace element and major ion concentrations over the eastern Mediterranean Sea: Identification of anthropogenic source regions
GÜLLÜ, GÜLEN; DOĞAN, GÜRAY; Tuncel, Süleyman Gürdal (2005-11-01)
Concentrations of elements and ions measured in aerosol samples collected from March 1992 to the end of December 1993 were investigated to identify source regions affecting chemical composition of aerosols in the eastern Mediterranean atmosphere. Collected samples were analyzed for approximately 40 elements and ions using a combination of atomic absorption spectrometry, instrumental neutron activation analysis, ion chromatography and colorimetry. Statistical techniques, such as enrichment factors and a non-...
Temporal variations and sources of Eastern Mediterranean aerosols based on a 9-year observation
ÖZTÜRK, FATMA; zararsız, Abdullah; Dutkiewicz, V. A.; Husain, L.; Hopke, P. K.; Tuncel, Süleyman Gürdal (2012-12-01)
Concentrations of 48 elements, NO3-, SO42-, CI-, NH4+ and black carbon (BC) were determined in PM10 aerosols collected daily at a rural Eastern Mediterranean (EM) site (Antalya, 30.34 degrees E, 36.47 degrees N) from 1993 to 2001. Temporal variations (daily, seasonal and long term), sources and source regions of EM aerosols were delineated. Concentrations of elements with marine and crustal origin were more episodic as compared to anthropogenic ones. Most of the variables showed well defined seasonal cycles...
Seasonal variability of optical properties of aerosols in the Eastern Mediterranean
Vrekoussis, M; Liakakou, E; Koçak, Mustafa; Kubilay, N; Oikonomou, K; Sciare, J; Mihalopoulos, N (2005-12-01)
The aerosol optical properties (scattering and absorption coefficients) were investigated at two remote locations in the Eastern Mediterranean in conjunction with aerosol ion composition measurements: Finokalia in the Crete Island in Greece (March 2001-June 2002) and Erdemli in Turkey (July 1999-June 2000). Ambient light-scattering coefficient (sigma(sp-532 nm)) at Finokalia had a mean value of 50 +/- 23 Mm(-1) while at Erdemli this value was 90 +/- 160 Mm(-1), due to a severe dust event that occurred from ...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
E. Tutsak and M. Koçak, “Long-term measurements of aerosol optical and physical properties over the Eastern Mediterranean: Hygroscopic nature and source regions,”
ATMOSPHERIC ENVIRONMENT
, pp. 1–15, 2019, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/30379.