Results 21 to 30 of about 450 (145)

Estimates of Hyperspectral Surface and Underwater UV Planar and Scalar Irradiances from OMI Measurements and Radiative Transfer Computations

Remote Sensing, 2022
Quantitative assessment of the UV effects on aquatic ecosystems requires an estimate of the in-water hyperspectral radiation field. Solar UV radiation in ocean waters is estimated on a global scale by combining extraterrestrial solar irradiance from the ...
Alexander Vasilkov, Nickolay Krotkov, David Haffner, Zachary Fasnacht, Joanna Joiner   +4 more
doaj   +2 more sources

A reanalysis of MODIS fine mode fraction over ocean using OMI and daily GOCART simulations [PDF]

Atmospheric Chemistry and Physics, 2011
Using daily Goddard Chemistry Aerosol Radiation and Transport (GOCART) model simulations and columnar retrievals of 0.55 μm aerosol optical thickness (AOT) and fine mode fraction (FMF) from the Moderate Resolution Imaging Spectroradiometer (MODIS), we ...
T. A. Jones, S. A. Christopher
doaj   +2 more sources

Sensoramiento remoto del NO2 y uso de suelo en el distrito de Pampas

Revista de Investigación e Innovación Agropecuaria y de Recursos Naturales
El dióxido de nitrógeno (NO2) es un contaminante, producto del parque automotor por lo que puede transformarse en ozono troposférico y es uno de los causantes de enfermedades respiratorias.
Julio Miguel Ángeles Suazo, Esmila Yeime Chavarría Márquez, Charles Frank Saldaña-Chafloque, Jairo Edson Gutiérrez-Collao, Diana Orellana Reyes, Jack Pérez Hijar, Merly Chávez de la Torre   +6 more
doaj   +3 more sources

Saharan dust detection using multi-sensor satellite measurements

Heliyon, 2017
Contemporary scientists have vested interest in trying to understand the climatology of the North Atlantic Basin since this region is considered as the genesis for hurricane formation that eventually get shipped to the tropical Atlantic region and the ...
Sriharsha Madhavan, John J. Qu, X. Hao
doaj   +2 more sources

Detection of anomalies in the UV–vis reflectances from the Ozone Monitoring Instrument [PDF]

Atmospheric Measurement Techniques, 2021
Various instrumental or geophysical artifacts, such as saturation, stray light or obstruction of light (either coming from the instrument or related to solar eclipses), negatively impact satellite measured ultraviolet and visible Earthshine radiance ...
N. Gorkavyi, Z. Fasnacht, D. Haffner, S. Marchenko, J. Joiner, A. Vasilkov   +5 more
doaj   +1 more source

Opto-Mechanical Inertial Sensors (OMIS) for High Temporal Resolution Gravimetry [PDF]

, 2020
<p>Gravity field measurement by free-falling atoms has the potential for very high stability<br>over time as the measurement exposes a direct, fundamental relationship between mass<br>and acceleration. However, the measurement rate of the current state-of-the-art limits<br>the performance
Kumanchik, Lee, Guzman, Felipe, Braxmaier, Claus   +2 more
openaire   +2 more sources

Intercomparison of Aerosol Types Reported as Part of Aerosol Product Retrieval over Diverse Geographic Regions

Remote Sensing, 2022
This study examines uncertainties in the retrieval of the Aerosol Optical Depth (AOD) for different aerosol types, which are obtained from different satellite-borne aerosol retrieval products over North Africa, California, Germany, and India and Pakistan
Somaya Falah, Alaa Mhawish, Ali H. Omar, Meytar Sorek-Hamer, Alexei I. Lyapustin, Tirthankar Banerjee, Fadi Kizel, David M. Broday   +7 more
doaj   +1 more source

Simultaneous assimilation of ozone profiles from multiple UV-VIS satellite instruments [PDF]

Atmospheric Chemistry and Physics, 2018
A three-dimensional global ozone distribution has been derived from assimilation of ozone profiles that were observed by satellites. By simultaneous assimilation of ozone profiles retrieved from the nadir looking satellite instruments Global Ozone ...
J. C. A. van Peet, R. J. van der A, R. J. van der A, H. M. Kelder, P. F. Levelt, P. F. Levelt   +5 more
doaj   +1 more source

Investigating the frequency and interannual variability in global above-cloud aerosol characteristics with CALIOP and OMI [PDF]

Atmospheric Chemistry and Physics, 2016
Seven and a half years (June 2006 to November 2013) of Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) aerosol and cloud layer products are compared with collocated Ozone Monitoring Instrument (OMI) aerosol index (AI) data and Aqua Moderate ...
R. Alfaro-Contreras, J. Zhang, J. R. Campbell, J. S. Reid   +3 more
doaj   +1 more source

Validation of urban NO ₂ concentrations and their diurnal and seasonal variations observed from the SCIAMACHY and OMI sensors using in situ surface measurements in Israeli cities [PDF]

Atmospheric Chemistry and Physics, 2009
Abstract. We compare a full-year (2006) record of surface air NO2 concentrations measured in Israeli cities to coinciding retrievals of tropospheric NO2 columns from satellite sensors (SCIAMACHY aboard ENVISAT and OMI aboard Aura). This provides a large statistical data set for validation of NO2 satellite measurements in urban air, where validation is ...
Boersma, K. F., Jacob, Daniel, Trainic, M., Rudich, Y., DeSmedt, I., Dirksen, R., Eskes, H. J.   +6 more
openaire   +6 more sources