COVID-AQS 2020 Data Download

Data policy

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Data Use Policy

These NOAA Chemical Sciences Laboratory (CSL) field project data are made freely available to the public and the scientific community, and are the product of extensive research and effort to maintain and improve their accuracy and quality. However, the availability of these data does not constitute publication, and NOAA CSL and their collaborating partners require citable outputs from their research to ensure its continued support. We therefore expect all users of this data to ensure that the responsible scientists receive fair credit for their work, and are offered the opportunity to contribute to the research uses of the data as they deem appropriate.

Accordingly, we ask that all users note and adhere to the following guidelines and procedures when using these data:

  1. These data are freely available for exploratory analysis. At such time as a journal publication or conference presentation is planned using these data, the relevant PIs of measurements included in the analysis should be informed of the nature and aims of the research project and the intended use of the data. PI contact details are given in the header files of the ICARTT-formatted data.
  2. Contacting the PIs will ensure they have adequate foreknowledge of the proposed research and thus the opportunity to contribute as appropriate to the use of NOAA CSL field project data in the proposed research project.
  3. If the PI makes a significant intellectual contribution to the research, or if the data are essential to the work, or if an important result or conclusion depends on the data, co−authorship would normally be expected. This should be discussed at an early stage in the work.
  4. Manuscripts using the data with NOAA field project co−authors should be sent to the coauthors for review well before (e.g. 4 weeks) they are submitted for publication, to ensure that the quality and limitations of the data are accurately represented and the coauthors have adequate time to provide input.

Notes on PTR-ToF-MS data

Aromatic compounds predominantly originating from mobile sources:

  • Benzene
  • Toluene (currently also influenced by construction activity)
  • C8 aromatics
  • C9 aromatics

VCP Tracers:

  • D5 siloxane: personal care products
  • D4 siloxane: insecticides
  • PCBTF: paints

Biogenic emissions:

  • Isoprene
  • Monoterpenes (could be influenced by VCPs too)

Oxidation products:

  • MVK
MassName
m31_CH2OH_ppbformaldehyde
m47_C2H6OH_ppbethanol
m59_C3H6OH_ppbacetone
m69_C5H8H_ppbisoprene
m71_C4H6OH_ppbMVK
m73_C4H8OH_ppbMEK
m79_C6H6H_ppbbenzene
m93_C7H8H_ppbtoluene
m107_C8H10H_ppbC8 aromatics
m121_C9H12H_ppbC9 aromatics
m137_C10H16H_ppbmonoterpenes
m147_C6H4Cl2H_ppbp-dichlorobenzene
m161_C7H3ClF2H_ppbPCBTF
m199_C12H22O2H_ppbtexanol
m297_C8H24O4Si4H_ppbD4 siloxane
m371_C10H31O5Si5_ppbD5 siloxane