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In situ ship and aircraft observation-based column-averaged mixing ratios of CO2 (obs. XCO2) over the Western Pacific Ocean

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The dataset contains the timeseries of monthly "observation-based XCO2" (obs. XCO2) over the Western Pacific Ocean from 2014 to 2016 for three representative latitude ranges: the northern midlatitudes (20–30° N), the Equator region (0–10° N), and southern latitudes (20–10° S). The dataset was obtained by integrating cargo-ship and commercial aircraft observations with the aid of state-of-the art atmospheric chemistry-transport model calculations.
The spatial and temporal coverage of the dataset will be continously extended and updated.

Description

Creator
Release date
2022/08/05
Temporal coverage
2014/01/01 - 2016/12/31
Data provider
NIES
Email: cgerdb_admin(at)nies.go.jp
DOI
File format
Data volume
10 KB
Version
ver.1.0 (Last updated: 2022/08/05)
Language
English

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Data Set

Parameters
Column-averaged mixing ratios of CO2
Domain
Regional
Details of 3 domains
[Region 1] lat: 20–30°N, lon: 130-150°E
[Region 2] lat: 0-10°N, lon: 140-160°E
[Region 3] lat: 20-10°S, lon: 145-165°E
Time resolution
1 month
Spatial resolution
   Latitude: 10 degrees, Longitude: 20 degrees
Calculation method
In-situ CO2 observations onboard cargo-ships of the Ship Of Opportunity program (SOOP, https://soop.jp/ ) and onboard commercial aircrafts of the Comprehensive Observation Network for Trace gases by Airliner (CONTRAIL, https://www.cger.nies.go.jp/contrail/) are monthly averaged within 10° latitude by 20° longitude boxes over the ocean. The monthly averages are integrated with the aid of state-of-the art atmospheric chemistry-transport model calculations to obtain observation-based CO2 profiles. Using equation (15) of Connor et al. (2008) (https://doi.org/10.1029/2006JD008336), and parameters of GOSAT (Greenhouse Gases Observing Satellite) retrievals, an "observation-based column-averaged CO2" (obs. XCO2) dataset is calculated (https://doi.org/10.5194/acp-21-8255-2021).
Keywords
[Free keywords]
Carbon cycle, Climate change, Greenhouse gas, Satellite Validation,
Carbon dioxide, CO2, XCO2
[GCMD_Platform]
Water-based Platforms > Vessels > Surface > Ships
Air-based Platforms > Jet > Airplane
Space-based Platforms > Earth Observation Satellites > GOSAT
[GCMD_Science]
ATMOSPHERE > ATMOSPHERIC CHEMISTRY > CARBON AND HYDROCARBON
COMPOUNDS > ATMOSPHERIC CARBON DIOXIDE
Update history
[2022/08/05]
     Data are released. ver.1.0.

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Contributors

Project Manager, Supervisor

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References Information

References
Müller, A., Tanimoto, H., Sugita, T., Machida, T., Nakaoka, S., Patra, P. K., Laughner, J., and Crisp, D.(2020): New approach to evaluate satellite derived XCO2 over oceans by integrating ship and aircraft observations, Atmos. Chem. Phys., doi:10.5194/acp-21-8255-2021.

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Terms and Conditions of Use*

*By accessing or using the Service you agree to follow these Terms. If you disagree with any part of the Terms, you may not access the Service.
The author of this data set (hereafter "Author") agrees to the use of this data set by person(s) wishing to use the data (hereafter "User") as stipulated in the Terms and Conditions below.

Scope of consent
The User may re-distribute the data to third party without any change or transformation of the data, and may publish new intellectual products (hereafter "Products") based on this data set.
Conditions for distribution

The User shall not accept any compensation for the re-distribution of the data of this data set to a third party.
In the event that the User re-distributes the data of this data set to a third party, the same Terms and Conditions apply also to the re-distributed data set.
When the User re-distributes the data of this data set to a third party, the User is obliged to inform the third party about the URL of the original data set, the Terms and Conditions of Use, and the fact that the data set is continuously updated by the Author.
Use of the latest version
Unless special reason exists, the User shall use the latest version of this data set.
Citation policy
When publishing any Products based on the present data set, it must be clearly stated that the present data set was used.
However, the Author may request the User to delete the citation from the Product. In that case, the User shall comply with the request within reasonable extent.
Citation format

When this data set is referred to in publications, it should be cited in the following format.
  Astrid Müller (2022), In situ ship and aircraft observation-based column-averaged
  mixing ratios of CO2 (obs. XCO2) over the Western Pacific Ocean, ver.x.x*1, NIES,
  DOI:10.17595/20220805.001. (Reference date*2: YYYY/MM/DD)
  *1 The version number is indicated in the name of each data file.
  *2 As the reference date, please indicate the date you downloaded the files.
Utilization reporting
Re-distribution of the data or release of Products derived from the data set, shall be reported to the Data Provider without delay.
Error reporting
Any error in the data set, or the suspicion thereof, should be immediately reported to the Data Provider.
Disclaimer
The Author and the Data Provider shall not have any liability or responsibility whatsoever for any damage that may arise from the use of this data set, and the User must not imply that any guarantee is provided by the Author or the Data Provider. Any injury or loss arising from the use of this data set is solely the responsibility of the User.

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Advisory Service

Advisory service
If you need scientific advice or expert opinion regarding the contents or scientific validity of this data set or Products derived from it, we can provide an advisory service based on an individual contract, different from the above one.
Depending on the extent of the help required, we can offer collaboration and/or supervision of the work based on the present data set. If you want to use our advisory service, contact the Data Provider.

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