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Author Steven Compernolle, Tijl Verhoelst, Gaia Pinardi, José Granville, Daan Hubert, Arno Keppens, Sander Niemeijer, Bruno Rino, Alkis Bais, Steffen Beirle, Folkert Boersma, John P. Burrows, Isabelle De Smedt, Henk Eskes, Florence Goutail, François Hendrick, Alba Lorente, Andrea Pazmino, Ankie Piters, Enno Peters, Jean-Pierre Pommereau, Julia Remmers, Andreas Richter, Jos van Geffen, Michel Van Roozendael, Thomas Wagner, Jean-Christopher Lambert doi  openurl
  Title Validation of Aura-OMI QA4ECV NO2 climate data records with ground-based DOAS networks: the role of measurement and comparison uncertainties Type Journal
  Year (down) 2020 Publication Atmospheric Chemistry and Physics Abbreviated Journal  
  Volume 20 Issue 13 Pages 8017-8045  
  Keywords  
  Abstract 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 (Network For The Detection Of Atmospheric Composition Change) Zenith-scattered Light Differential Optical Absorption Spectroscopy (Zsl-doas) And Multi-axis Doas (Max-doas) Data As A Reference. The Qa4ecv Omi Stratospheric Vcds Have A Small Bias Of ∼0.2 Pmolec.cm-2 (5 %–10 %) And A Dispersion Of 0.2 To 1 Pmolec.cm-2 With Respect To The Zsl-doas Measurements. Qa4ecv Tropospheric Vcd Observations From Omi Are Restricted To Near-cloud-free Scenes, Leading To A Negative Sampling Bias (With Respect To The Unrestricted Scene Ensemble) Of A Few Peta Molecules Per Square Centimetre (Pmolec.cm-2) Up To −10 Pmolec.cm-2 (−40 %) In One Extreme High-pollution Case. The Qa4ecv Omi Tropospheric Vcd Has A Negative Bias With Respect To The Max-doas Data (−1 To −4 Pmolec.cm-2), Which Is A Feature Also Found For The Omi Omno2 Standard Data Product. The Tropospheric Vcd Discrepancies Between Satellite Measurements And Ground-based Data Greatly Exceed The Combined Measurement Uncertainties. Depending On The Site, Part Of The Discrepancy Can Be Attributed To A Combination Of Comparison Errors (Notably Horizontal Smoothing Difference Error), Measurement/retrieval Errors Related To Clouds And Aerosols, And The Difference In Vertical Smoothing And A Priori Profile Assumptions.  
  Programme 209  
  Campaign  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1680-7316 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 8014  
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