Results 11 to 20 of about 450 (145)

Accounting for the effects of surface BRDF on satellite cloud and trace-gas retrievals: a new approach based on geometry-dependent Lambertian equivalent reflectivity applied to OMI algorithms [PDF]

Atmospheric Measurement Techniques, 2017
Most satellite nadir ultraviolet and visible cloud, aerosol, and trace-gas algorithms make use of climatological surface reflectivity databases. For example, cloud and NO2 retrievals for the Ozone Monitoring Instrument (OMI) use monthly gridded surface ...
A. Vasilkov, W. Qin, N. Krotkov, L. Lamsal, R. Spurr, D. Haffner, J. Joiner, E.-S. Yang, S. Marchenko   +8 more
doaj   +2 more sources

Improvements to the OMI near-UV aerosol algorithm using A-train CALIOP and AIRS observations [PDF]

Atmospheric Measurement Techniques, 2013
The height of desert dust and carbonaceous aerosols layers and, to a lesser extent, the difficulty in determining the predominant size mode of these absorbing aerosol types, are sources of uncertainty in the retrieval of aerosol properties from near-UV ...
O. Torres, C. Ahn, Z. Chen
doaj   +2 more sources

Comparison and Validation of TROPOMI and OMI NO₂ Observations over China

Atmosphere, 2020
The new-generation sensor TROPOspheric Monitoring Instrument (TROPOMI) onboard the Sentinel 5 precursor (S5P) satellite is promising for monitoring air pollutants with greater spatial resolution, especially for China, which suffers from severe pollution.
Chunjiao Wang, Ting Wang, Pucai Wang, Vadim Rakitin   +3 more
doaj   +2 more sources

A new global anthropogenic SO₂ emission inventory for the last decade: a mosaic of satellite-derived and bottom-up emissions [PDF]

Atmospheric Chemistry and Physics, 2018
Sulfur dioxide (SO2) measurements from the Ozone Monitoring Instrument (OMI) satellite sensor have been used to detect emissions from large point sources.
F. Liu, F. Liu, S. Choi, S. Choi, C. Li, C. Li, V. E. Fioletov, C. A. McLinden, J. Joiner, N. A. Krotkov, H. Bian, H. Bian, G. Janssens-Maenhout, A. S. Darmenov, A. M. da Silva   +14 more
doaj   +3 more sources

Impact of Using a New High-Resolution Solar Reference Spectrum on OMI Ozone Profile Retrievals

Remote Sensing, 2021
We evaluated a new high-resolution solar reference spectrum for characterizing space-borne Ozone Monitoring Instrument (OMI) measurements as well as for retrieving ozone profile retrievals over the ultraviolet (UV) wavelength range from 270 to 330 nm ...
Juseon Bak, Odele Coddington, Xiong Liu, Kelly Chance, Hyo-Jung Lee, Wonbae Jeon, Jae-Hwan Kim, Cheol-Hee Kim   +7 more
doaj   +3 more sources

Verification of CALIOP, MODIS, MISR, and OMI aerosol optical depth retrievals against Sun-photometer data over Zanjan [PDF]

تحقیقات کاربردی علوم جغرافیایی, 2021
In this paper, aerosol optical depth measured by Caliop, MODIS, MISR, and OMI satellite sensors is compared with Sun-photometer data located in the Institute for Advanced Studies in Basic Sciences (IASBS) from December 2009 to December 2013 over Zanjan ...
Ali Bayat, Ahmad Assar Enayati, Azimeh Toshani   +2 more
doaj   +1 more source

Bias correction of OMI HCHO columns based on FTIR and aircraft measurements and impact on top-down emission estimates [PDF]

Atmospheric Chemistry and Physics
Spaceborne formaldehyde (HCHO) measurements constitute an excellent proxy for the sources of non-methane volatile organic compounds (NMVOCs). Past studies suggested substantial overestimations of NMVOC emissions in state-of-the-art inventories over major
J.-F. Müller, T. Stavrakou, G.-M. Oomen, B. Opacka, I. De Smedt, A. Guenther, C. Vigouroux, B. Langerock, C. A. B. Aquino, M. Grutter, J. Hannigan, F. Hase, R. Kivi, E. Lutsch, E. Mahieu, M. Makarova, J.-M. Metzger, I. Morino, I. Murata, T. Nagahama, J. Notholt, I. Ortega, M. Palm, A. Röhling, W. Stremme, K. Strong, R. Sussmann, Y. Té, A. Fried   +28 more
doaj   +4 more sources

Validation of Aura-OMI QA4ECV NO₂ climate data records with ground-based DOAS networks: the role of measurement and comparison uncertainties [PDF]

Atmospheric Chemistry and Physics, 2020
The QA4ECV (Quality Assurance for Essential Climate Variables) version 1.1 stratospheric and tropospheric NO2 vertical column density (VCD) climate data records (CDRs) from the OMI (Ozone Monitoring Instrument) satellite sensor are validated using NDACC (
S. Compernolle, T. Verhoelst, G. Pinardi, J. Granville, D. Hubert, A. Keppens, S. Niemeijer, B. Rino, A. Bais, S. Beirle, F. Boersma, F. Boersma, J. P. Burrows, I. De Smedt, H. Eskes, F. Goutail, F. Hendrick, A. Lorente, A. Pazmino, A. Piters, E. Peters, J.-P. Pommereau, J. Remmers, A. Richter, J. van Geffen, M. Van Roozendael, T. Wagner, J.-C. Lambert   +27 more
doaj   +3 more sources

COMPORTAMENTO DA COLUNA TOTAL DE DIÓXIDO DE ENXOFRE NA CAMADA LIMITE DA REGIÃO DA CIDADE DE SANTIAGO NO CHILE UTILIZANDO O SENSOR OMI [PDF]

Ciência e Natura, 2016
Air pollution is a major environmental problem of today's world. The sulfur dioxide gas (SO2), a pollutant studied both in remote areas as in urban areas, and can be emitted into the atmosphere through natural sources and also by human activities, and its study of great relevance for monitoring problems caused to health of the population, agriculture ...
Mateus Dias Nunes, Éricka Voss Chagas Mariano, Glauber Lopes Mariano   +2 more
openaire   +2 more sources

Using the OMI aerosol index and absorption aerosol optical depth to evaluate the NASA MERRA Aerosol Reanalysis [PDF]

Atmospheric Chemistry and Physics, 2015
A radiative transfer interface has been developed to simulate the UV aerosol index (AI) from the NASA Goddard Earth Observing System version 5 (GEOS-5) aerosol assimilated fields.
V. Buchard, A. M. da Silva, P. R. Colarco, A. Darmenov, C. A. Randles, R. Govindaraju, O. Torres, J. Campbell, R. Spurr   +8 more
doaj   +2 more sources