scholarly journals Dust transport over the eastern Mediterranean derived from Total Ozone Mapping Spectrometer, Aerosol Robotic Network, and surface measurements

2007 ◽  
Vol 112 (D3) ◽  
Author(s):  
N. Kalivitis ◽  
E. Gerasopoulos ◽  
M. Vrekoussis ◽  
G. Kouvarakis ◽  
N. Kubilay ◽  
...  
Keyword(s):  
Total Ozone ◽  
Eastern Mediterranean ◽  
Total Ozone Mapping Spectrometer ◽  
Dust Transport ◽  
Surface Measurements

The Solar Backscatter Ultraviolet and Total Ozone Mapping Spectrometer (SBUV/TOMS) for NIMBUS G

1975 ◽  
Vol 14 (4) ◽  
Author(s):  
D. F. Heath ◽  
A. J. Krueger ◽  
H. A. Roeder ◽  
B. D. Henderson
Keyword(s):  
Total Ozone ◽  
Total Ozone Mapping Spectrometer

scholarly journals Tropical tropospheric ozone derived using Clear-Cloudy Pairs (CCP) of TOMS measurements

2003 ◽  
Vol 3 (1) ◽  
pp. 225-252 ◽  
Author(s):  
M. J. Newchurch ◽  
D. Sun ◽  
J. H. Kim ◽  
X. Liu
Keyword(s):  
High Altitude ◽  
Tropospheric Ozone ◽  
Total Ozone ◽  
Stratospheric Ozone ◽  
Lower Troposphere ◽  
Total Ozone Mapping Spectrometer ◽  
Significant Difference ◽  
Retrieval Efficiency ◽  
Retrieval Errors ◽  
Low Altitude

Abstract. Using TOMS total-ozone measurements over high-altitude cloud locations and nearby paired clear locations, we describe the Clear-Cloudy Pairs (CCP) method for deriving tropical tropospheric ozone. The high-altitude clouds are identified by measured 380 nm reflectivities greater than 80% and Temperature Humidity InfraRed (THIR) measured cloud-top pressures less than 200 hPa. To account for locations without high-altitude clouds, we apply a zonal sine fitting to the stratospheric ozone derived from available cloudy points, resulting in a wave-one amplitude of about 4 DU. THIR data is unavailable after November 1984, so we extend the CCP method by using a reflectivity threshold of 90% to identify high-altitude clouds and remove the influence of high-reflectivity-but-low-altitude clouds with a lowpass frequency filter. We correct ozone retrieval errors associated with clouds, and ozone retrieval errors due to sun glint and aerosols. Comparing CCP results with Southern Hemisphere ADditional OZonesondes (SHADOZ) tropospheric ozone indicates that CCP tropospheric ozone and ozonesonde measurements are highly consistent. The most significant difference between CCP and ozonesonde tropospheric ozone can be explained by the low Total Ozone Mapping Spectrometer (TOMS) retrieval efficiency of ozone in the lower troposphere.

Prelaunch tests for the calibration of Total Ozone Mapping Spectrometer (TOMS) flight model 5 (FM-5)

1999 ◽  
Author(s):  
Hongwoo Park ◽  
F. G. Cunningham ◽  
Jay R. Herman ◽  
Richard D. McPeters ◽  
Pawan K. Bhartia ◽  
...  
Keyword(s):  
Total Ozone ◽  
Total Ozone Mapping Spectrometer ◽  
Flight Model

scholarly journals The structure of the lithosphere and upper mantle beneath the Eastern Mediterranean and Middle East

2020 ◽  
Vol 2 (3) ◽  
pp. 311-326 ◽  
Author(s):  
Dan McKenzie
Keyword(s):  
Middle East ◽  
Shear Wave ◽  
Upper Mantle ◽  
Eastern Mediterranean ◽  
Three Dimensional ◽  
Surface Velocity ◽  
Wave Velocities ◽  
Shear Wave Velocities ◽  
Surface Measurements ◽  
Lithosphere Thickness

AbstractSurface velocity measurements show that the Middle East is one of the most actively deforming regions of the continents. The structure of the underlying lithosphere and convecting upper mantle can be explored by combining three types of measurement. The gravity field from satellite and surface measurements is supported by the elastic properties of the lithosphere and by the underlying mantle convection. Three dimensional shear wave velocities can be determined by tomographic inversion of surface wave velocities. The shear wave velocities of the mantle are principally controlled by temperature, rather than by composition. The mantle composition can be obtained from that of young magmas. Application of these three types of observation to the Eastern Mediterranean and Middle East shows that the lithosphere thickness in most parts is no more than 50-70 km, and that the elastic thickness is less than 5 km. Because the lithosphere is so thin and weak the pattern of the underlying convection is clearly visible in the topography and gravity, as well as controlling the volcanism. The convection pattern takes the form of spokes: lines of hot upwelling mantle, joining hubs where the upwelling is three dimensional. It is the same as that seen in high Rayleigh number laboratory and numerical experiments. The lithospheric thicknesses beneath the seafloor to the SW of the Hellenic Arc and beneath the NE part of the Arabian Shield are more than 150 km and the elastic thicknesses are 30–40 km.

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