Broccardo, Stephen und Heue, Klaus-Peter und Walter, David und Meyer, Christian und Kokhanovsky, Alexander und van der A, Ronald und Langermann, Kristy und Piketh, Stuart und Platt, Ulrich (2018) Intra-pixel variability in satellite NO2 measurements. Atmospheric Measurement Techniques (AMT). Copernicus Publications. ISSN 1867-1381. (im Druck)
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Kurzfassung
Aircraft measurements of NO2 using a differential optical absorption spectrometer (DOAS) instrument over the South African Highveld region in August 2007 are presented. In-situ aerosol and trace-gas vertical profile measurements, along with aerosol optical thickness and single-scattering albedo from AERONET, are used to devise scenarios for a radiative-transfer modelling sensitivity study. Uncertainty in the air-mass factor due to variations in profile shape is constrained, and used to calculate vertical column densities, which are compared to co-located satellite measurements. The lower spatial resolution of the satellites cannot resolve the detailed plume structures revealed in the aircraft measurements. The airborne DOAS in general measured steeper horizontal gradients and higher peak NO2 VCD. Spatially-averaged aircraft measurements close to major sources indicate NO2 column densities more than twice those measured by the satellite. The agreement between the high-resolution aircraft instrument and the satellite instrument improves with distance from the source. Despite the low resolution, satellite images reveal point sources and plumes that retain their structure for several hundred kilometers downwind.
elib-URL des Eintrags: | https://elib.dlr.de/108297/ | ||||||||||||||||||||||||||||||||||||||||
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Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||||||||||||||||||||||||||
Titel: | Intra-pixel variability in satellite NO2 measurements | ||||||||||||||||||||||||||||||||||||||||
Autoren: |
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Datum: | 2018 | ||||||||||||||||||||||||||||||||||||||||
Erschienen in: | Atmospheric Measurement Techniques (AMT) | ||||||||||||||||||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||||||||||||||||||
Open Access: | Ja | ||||||||||||||||||||||||||||||||||||||||
Gold Open Access: | Ja | ||||||||||||||||||||||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||||||||||||||||||||||
In ISI Web of Science: | Ja | ||||||||||||||||||||||||||||||||||||||||
Verlag: | Copernicus Publications | ||||||||||||||||||||||||||||||||||||||||
ISSN: | 1867-1381 | ||||||||||||||||||||||||||||||||||||||||
Status: | im Druck | ||||||||||||||||||||||||||||||||||||||||
Stichwörter: | Emissionen von Kohlekraftwerken, NO NO2 NOx Vergleich Flugzeugmessungen mit Satelliten | ||||||||||||||||||||||||||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||||||||||||||||||||||
HGF - Programm: | Raumfahrt | ||||||||||||||||||||||||||||||||||||||||
HGF - Programmthema: | Erdbeobachtung | ||||||||||||||||||||||||||||||||||||||||
DLR - Schwerpunkt: | Raumfahrt | ||||||||||||||||||||||||||||||||||||||||
DLR - Forschungsgebiet: | R EO - Erdbeobachtung | ||||||||||||||||||||||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | Vorhaben Spektroskopische Verfahren in der Fernerkundung (alt) | ||||||||||||||||||||||||||||||||||||||||
Standort: | Oberpfaffenhofen | ||||||||||||||||||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Methodik der Fernerkundung > Atmosphärenprozessoren | ||||||||||||||||||||||||||||||||||||||||
Hinterlegt von: | Heue, Klaus-Peter | ||||||||||||||||||||||||||||||||||||||||
Hinterlegt am: | 24 Nov 2016 12:12 | ||||||||||||||||||||||||||||||||||||||||
Letzte Änderung: | 08 Mär 2018 18:10 |
Verfügbare Versionen dieses Eintrags
- Intra-pixel variability in satellite NO2 measurements. (deposited 24 Nov 2016 12:12) [Gegenwärtig angezeigt]
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