edu.ucar.opensky::articles:42923 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-24T17:55:42.870562 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.net/ark:/85065/d72b93d7 https://doi.org/10.13020/9r8x-pp66 https Related Dataset #1 ROCRv2 methanol, ethene, ethyne, and HCN retrievals from the CrIS satellite sensor https://doi.org/10.18758/KPYC5AGF https Related Dataset #2 FTIR acetylene (C2H2) groundbased remote sensing at Porto Velho from instrument BIRA.IASB004 https://doi.org/10.18758/YFT886SG https Related Dataset #3 FTIR methanol (CH3OH) groundbased remote sensing at Porto Velho from instrument BIRA.IASB004 https://doi.org/10.5067/LS66YMQDSPRI https Related Dataset #4 TROPESS CrIS-SNPP L2 Carbon Monoxide for Australian Fires, Standard Product V1 https://doi.org/10.5281/zenodo.5711194 https Related Software #1 geoschem/GCClassic: GEOS-Chem 13.3.2 Global decadal measurements of methanol, ethene, ethyne, and HCN from the Cross-track Infrared Sounder 2025-02-07T00:00:00Z publication https://n2t.net/ark:/85065/d72b93d7 https://doi.org/10.5194/amt-18-695-2025 Wells, K. C. author Millet, D. B. author Brewer, J. F. author Payne, V. H. author Cady-Pereira, K. E. author Pernak, R. author Kulawik, S. author Vigouroux, C. author Jones, N. author Mahieu, E. author Makarova, M. author Nagahama, T. author Ortega, Ivan author Palm, M. author Strong, K. author Schneider, M. author Smale, D. author Sussmann, R. author Zhou, M. author UCAR/NCAR - Library publisher Volatile organic compounds (VOCs) play an important role in modulating the atmosphere's oxidizing capacity and affect tropospheric ozone, carbon monoxide, formaldehyde, and organic aerosol formation. Space-based observations can provide powerful global information to advance our knowledge of these processes and their changes over time. We present here the development of new retrievals for four key VOCs (methanol, ethene, ethyne, and HCN) based on thermal infrared radiance observations from the satellite-borne Cross-track Infrared Sounder (CrIS). We update the Retrieval of Organics from CrIS Radiances (ROCR) algorithm developed previously for isoprene to explicitly account for the spectral signal dependence on the VOC vertical profile shape, and we apply this updated retrieval (ROCRv2) to derive column abundances for the targeted species across the full Suomi&nbsp;NPP CrIS record (2012–2023). The CrIS data are well correlated with ground-based Network for the Detection of Atmospheric Composition Change (NDACC) retrievals for methanol (r = 0.77–0.84); HCN and ethyne exhibit lower correlations (r = 0.36–0.44 and 0.56–0.65, respectively) with an apparent 40 % CrIS–NDACC disparity for ethyne. The results reveal robust global distributions of the target VOCs from known biogenic, biomass burning, and industrial source regions, and they demonstrate the impact of anomalous events such as the 2015–2016 El Niño. They also highlight the importance of accurate vertical profile constraints when evaluating and interpreting thermal infrared data records. Initial comparisons of the CrIS observations to predicted VOC distributions from the GEOS-Chem chemical transport model point to large uncertainties in our current understanding of the atmospheric ethene budget as well as to underestimated HCN, ethyne, and methanol sources. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication <span style="font-family:Arial;font-size:10pt;font-style:normal;" data-sheets-root="1">Copyright author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.</span> None eng geoscientificInformation