Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.11765/12880
New observations of NO2 in the upper troposphere from TROPOMI
Full metadata record
DC FieldValueLanguage
dc.contributor.authorMarais, Eloise A.es_ES
dc.contributor.authorRoberts, John F.es_ES
dc.contributor.authorRyan, Robert G.es_ES
dc.contributor.authorEskes, Henk J.es_ES
dc.contributor.authorBoersma, K. Folkertes_ES
dc.contributor.authorChoi, Sungyeones_ES
dc.contributor.authorJoiner, Joannaes_ES
dc.contributor.authorAbuhassan, Naderes_ES
dc.contributor.authorRedondas, Albertoes_ES
dc.contributor.authorGrutter, Micheles_ES
dc.contributor.authorCede, Alexanderes_ES
dc.contributor.authorGómez, Lauraes_ES
dc.contributor.authorNavarro Comas, Mónicaes_ES
dc.date.accessioned2021-05-06T07:22:14Z-
dc.date.available2021-05-06T07:22:14Z-
dc.date.issued2021-
dc.identifier.citationAtmospheric Measurement Techniques. 2021, 14(3), p. 2389–2408es_ES
dc.identifier.issn1867-1381-
dc.identifier.issn1867-8548-
dc.identifier.urihttp://hdl.handle.net/20.500.11765/12880-
dc.description.abstractNitrogen oxides (NOx≡NO+NO2) in the NOx-limited upper troposphere (UT) are long-lived and so have a large influence on the oxidizing capacity of the troposphere and formation of the greenhouse gas ozone. Models misrepresent NOx in the UT, and observations to address deficiencies in models are sparse. Here we obtain a year of near-global seasonal mean mixing ratios of NO2 in the UT (450–180 hPa) at 1∘×1∘ by applying cloud-slicing to partial columns of NO2 from TROPOMI. This follows refinement of the cloud-slicing algorithm with synthetic partial columns from the GEOS-Chem chemical transport model. TROPOMI, prior to cloud-slicing, is corrected for a 13 % underestimate in stratospheric NO2 variance and a 50 % overestimate in free-tropospheric NO2 determined by comparison to Pandora total columns at high-altitude free-tropospheric sites at Mauna Loa, Izaña, and Altzomoni and MAX-DOAS and Pandora tropospheric columns at Izaña. Two cloud-sliced seasonal mean UT NO2 products for June 2019 to May 2020 are retrieved from corrected TROPOMI total columns using distinct TROPOMI cloud products that assume clouds are reflective boundaries (FRESCO-S) or water droplet layers (ROCINN-CAL). TROPOMI UT NO2 typically ranges from 20–30 pptv over remote oceans to >80 pptv over locations with intense seasonal lightning. Spatial coverage is mostly in the tropics and subtropics with FRESCO-S and extends to the midlatitudes and polar regions with ROCINN-CAL, due to its greater abundance of optically thick clouds and wider cloud-top altitude range. TROPOMI UT NO2 seasonal means are spatially consistent (R=0.6–0.8) with an existing coarser spatial resolution (5∘ latitude × 8∘ longitude) UT NO2 product from the Ozone Monitoring Instrument (OMI). UT NO2 from TROPOMI is 12–26 pptv more than that from OMI due to increase in NO2 with altitude from the OMI pressure ceiling (280 hPa) to that for TROPOMI (180 hPa), but possibly also due to altitude differences in TROPOMI and OMI cloud products and NO2 retrieval algorithms. The TROPOMI UT NO2 product offers potential to evaluate and improve representation of UT NOx in models and supplement aircraft observations that are sporadic and susceptible to large biases in the UT.es_ES
dc.description.sponsorshipThis research has been supported by the European Research Council under the European Union’s Horizon 2020 research and innovation programme (through the Starting Grant awarded to Eloise A. Marais, UpTrop (grant no. 851854)).es_ES
dc.language.isoenges_ES
dc.publisherEuropean Geosciences Uniones_ES
dc.rightsLicencia CC: Reconocimiento CC BYes_ES
dc.subjectTROPOMIes_ES
dc.subjectUpper tropospherees_ES
dc.subjectCloud-slicinges_ES
dc.titleNew observations of NO2 in the upper troposphere from TROPOMIes_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.relation.publisherversionhttps://dx.doi.org/10.5194/amt-14-2389-2021es_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses_ES
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/H2020/851854es_ES
Appears in Collections:Artículos científicos 2019-2021


Files in This Item:
  File Description SizeFormat 
amt-14-2389-2021.pdf
6,37 MBAdobe PDFThumbnail
View/Open
Show simple item record



Items in Arcimís are protected by Creative Commons License, unless otherwise indicated.

Arcimís Repository
Nota Legal Contacto y sugerencias