The version 3 OMI NO<sub>2</sub> standard product
We describe the new version 3.0 NASA Ozone Monitoring Instrument (OMI) standard nitrogen dioxide (NO<sub>2</sub>) products (SPv3). The products and documentation are publicly available from the NASA Goddard Earth Sciences Data and Information Services Center (<a href="https:/...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2017-09-01
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| Series: | Atmospheric Measurement Techniques |
| Online Access: | https://www.atmos-meas-tech.net/10/3133/2017/amt-10-3133-2017.pdf |
| _version_ | 1818238621193338880 |
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| author | N. A. Krotkov L. N. Lamsal L. N. Lamsal E. A. Celarier E. A. Celarier W. H. Swartz W. H. Swartz S. V. Marchenko S. V. Marchenko E. J. Bucsela K. L. Chan M. Wenig M. Zara |
| author_facet | N. A. Krotkov L. N. Lamsal L. N. Lamsal E. A. Celarier E. A. Celarier W. H. Swartz W. H. Swartz S. V. Marchenko S. V. Marchenko E. J. Bucsela K. L. Chan M. Wenig M. Zara |
| author_sort | N. A. Krotkov |
| collection | DOAJ |
| description | We describe the new version 3.0 NASA Ozone Monitoring
Instrument (OMI) standard nitrogen dioxide (NO<sub>2</sub>) products (SPv3). The
products and documentation are publicly available from the NASA Goddard Earth
Sciences Data and Information Services Center
(<a href="https://disc.gsfc.nasa.gov/datasets/OMNO2_V003/summary/" target="_blank">https://disc.gsfc.nasa.gov/datasets/OMNO2_V003/summary/</a>). The major
improvements include (1) a new spectral fitting algorithm for NO<sub>2</sub> slant
column density (SCD) retrieval and (2) higher-resolution (1° latitude
and 1.25° longitude) a priori NO<sub>2</sub> and temperature profiles
from the Global Modeling Initiative (GMI) chemistry–transport model with
yearly varying emissions to calculate air mass factors (AMFs) required to
convert SCDs into vertical column densities (VCDs). The new SCDs are
systematically lower (by ∼ 10–40 %) than previous, version 2,
estimates. Most of this reduction in SCDs is propagated into stratospheric
VCDs. Tropospheric NO<sub>2</sub> VCDs are also reduced over polluted areas,
especially over western Europe, the eastern US, and eastern China. Initial
evaluation over unpolluted areas shows that the new SPv3 products agree
better with independent satellite- and ground-based Fourier transform infrared (FTIR) measurements.
However, further evaluation of tropospheric VCDs is needed over polluted
areas, where the increased spatial resolution and more refined AMF estimates
may lead to better characterization of pollution hot spots. |
| first_indexed | 2024-12-12T12:44:34Z |
| format | Article |
| id | doaj.art-7042191cebea4110904e149f70a364c3 |
| institution | Directory Open Access Journal |
| issn | 1867-1381 1867-8548 |
| language | English |
| last_indexed | 2024-12-12T12:44:34Z |
| publishDate | 2017-09-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Measurement Techniques |
| spelling | doaj.art-7042191cebea4110904e149f70a364c32022-12-22T00:24:08ZengCopernicus PublicationsAtmospheric Measurement Techniques1867-13811867-85482017-09-01103133314910.5194/amt-10-3133-2017The version 3 OMI NO<sub>2</sub> standard productN. A. Krotkov0L. N. Lamsal1L. N. Lamsal2E. A. Celarier3E. A. Celarier4W. H. Swartz5W. H. Swartz6S. V. Marchenko7S. V. Marchenko8E. J. Bucsela9K. L. Chan10M. Wenig11M. Zara12Atmospheric Chemistry and Dynamics Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, USAAtmospheric Chemistry and Dynamics Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, USAGESTAR, Universities Space Research Association, Columbia, Maryland, USAAtmospheric Chemistry and Dynamics Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, USAGESTAR, Universities Space Research Association, Columbia, Maryland, USAAtmospheric Chemistry and Dynamics Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, USAApplied Physics Laboratory, Johns Hopkins University, Laurel, Maryland, USAAtmospheric Chemistry and Dynamics Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, USAScience Systems and Applications, Inc., Lanham, Maryland, USASRI International, Menlo Park, California, USADepartment of Physics, Ludwig Maximilian University, Munich, GermanyDepartment of Physics, Ludwig Maximilian University, Munich, GermanyRoyal Netherlands Meteorological Institute (KNMI), De Bilt, the Netherlands We describe the new version 3.0 NASA Ozone Monitoring Instrument (OMI) standard nitrogen dioxide (NO<sub>2</sub>) products (SPv3). The products and documentation are publicly available from the NASA Goddard Earth Sciences Data and Information Services Center (<a href="https://disc.gsfc.nasa.gov/datasets/OMNO2_V003/summary/" target="_blank">https://disc.gsfc.nasa.gov/datasets/OMNO2_V003/summary/</a>). The major improvements include (1) a new spectral fitting algorithm for NO<sub>2</sub> slant column density (SCD) retrieval and (2) higher-resolution (1° latitude and 1.25° longitude) a priori NO<sub>2</sub> and temperature profiles from the Global Modeling Initiative (GMI) chemistry–transport model with yearly varying emissions to calculate air mass factors (AMFs) required to convert SCDs into vertical column densities (VCDs). The new SCDs are systematically lower (by ∼ 10–40 %) than previous, version 2, estimates. Most of this reduction in SCDs is propagated into stratospheric VCDs. Tropospheric NO<sub>2</sub> VCDs are also reduced over polluted areas, especially over western Europe, the eastern US, and eastern China. Initial evaluation over unpolluted areas shows that the new SPv3 products agree better with independent satellite- and ground-based Fourier transform infrared (FTIR) measurements. However, further evaluation of tropospheric VCDs is needed over polluted areas, where the increased spatial resolution and more refined AMF estimates may lead to better characterization of pollution hot spots.https://www.atmos-meas-tech.net/10/3133/2017/amt-10-3133-2017.pdf |
| spellingShingle | N. A. Krotkov L. N. Lamsal L. N. Lamsal E. A. Celarier E. A. Celarier W. H. Swartz W. H. Swartz S. V. Marchenko S. V. Marchenko E. J. Bucsela K. L. Chan M. Wenig M. Zara The version 3 OMI NO<sub>2</sub> standard product Atmospheric Measurement Techniques |
| title | The version 3 OMI NO<sub>2</sub> standard product |
| title_full | The version 3 OMI NO<sub>2</sub> standard product |
| title_fullStr | The version 3 OMI NO<sub>2</sub> standard product |
| title_full_unstemmed | The version 3 OMI NO<sub>2</sub> standard product |
| title_short | The version 3 OMI NO<sub>2</sub> standard product |
| title_sort | version 3 omi no sub 2 sub standard product |
| url | https://www.atmos-meas-tech.net/10/3133/2017/amt-10-3133-2017.pdf |
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