This codebook.txt file was generated on by Dylan Millet ------------------- GENERAL INFORMATION ------------------- 1. Title of Dataset: ROCR Isoprene Retrievals from the CrIS Satellite Sensor 2. Author Information Principal Investigator Contact Information Name: Dylan Millet Institution: University of Minnesota Email: dbm@umn.edu Associate or Co-investigator Contact Information Name: Kelley Wells Institution: University of Minnesota Email: kcw@umn.edu 3. Date of data collection: February 2012-December 2020 4. Geographic location of data collection (where was data collected?): Global 5. Information about funding sources that supported the collection of the data: This work was supported by the NASA Aura Science Team (Grant No. 80NSSC20K0927) and the Minnesota Supercomputing Institute. -------------------------- SHARING/ACCESS INFORMATION -------------------------- 1. Licenses/restrictions placed on the data: Data provided here are available for use on a collaborative basis. We request that you contact us if using the data, and prior to including it in any presentations or publication. 2. Links to publications that cite or use the data: https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2021JD036181 3. Links to other publicly accessible locations of the data: 4. Links/relationships to ancillary data sets: These CrIS L1B data associated with these retrievals can be found publicly here: https://snpp-sounder.gesdisc.eosdis.nasa.gov/data/SNPP_Sounder_Level1/SNPPCrISL1BNSR.2/ 5. Was data derived from another source? If yes, list source(s): 6. Recommended citation for the data: Wells, Kelley C.; Millet, Dylan B.. (2022). ROCR Isoprene Retrievals from the CrIS Satellite Sensor. Retrieved from the Data Repository for the University of Minnesota, https://doi.org/10.13020/5n0j-wx73. --------------------- DATA & FILE OVERVIEW --------------------- 1. File List A. Filename: 2012to2020_CrIS_Isoprene.nc Short description: This file contains global CrIS isoprene column densities for each month of the year, averaged from 2012-2020 (2013-2020 for January). B. Filename: 2012to2020_summer_Ozarks_Isoprene.nc Short description: This file contains daily CrIS isoprene averaged over the Ozarks [35 to 39 latitude, -95 to -90 longitude] from June-September 2012-2020. C. Filename: 2013_Acre_Isoprene.nc Short description: This file contains daily CrIS isoprene averaged over the Brazilian state of Acre [-12 to -6 latitude, -73 to -66 longitude] for 2013. 2. Are there multiple versions of the dataset? No -------------------------- METHODOLOGICAL INFORMATION -------------------------- 1. Description of methods used for collection/generation of data: Isoprene columns derived from CrIS L1B radiances using a machine learning based retrieval algorithm 2. Methods for processing the data: These data were calculated as long-term monthly means or daily values averaged over specific regions (Ozarks and Acre). 3. Instrument- or software-specific information needed to interpret the data: CrIS is a Fourier transform spectrometer onboard the Suomi-NPP satellite, flying in a sun-synchronous orbit with 1330 LT daytime equator overpass. Information on the CrIS sensor is available from: Han, Y. et al. Suomi NPP CrIS measurements, sensor data record algorithm, calibration and validation activities, and record data quality. J. Geophys. Res.-Atmos. 118, 12734-12748, doi:10.1002/2013jd020344 (2013). 4. Standards and calibration information, if appropriate: 5. Environmental/experimental conditions: 6. Describe any quality-assurance procedures performed on the data: Data were screened for artifacts in snow/ice conditions using a temperature threshold of 273 K. 7. People involved with sample collection, processing, analysis and/or submission: ----------------------------------------- DATA-SPECIFIC INFORMATION FOR: 2012to2020_CrIS_Isoprene.nc ----------------------------------------- 1. Number of variables: 3 2. Number of cases/rows: 576 x 361 3. Missing data codes: NaN 4. Variable List A. Name: Isop Description: CrIS retrieved isoprene column density molec/cm^2 B. Name: lat Description: Latitude C. Name: lon Description: Longitude ----------------------------------------- DATA-SPECIFIC INFORMATION FOR: 2012to2020_summer_Ozarks_Isoprene.nc ----------------------------------------- 1. Number of variables: 3 2. Number of cases/rows: 9 x 122 3. Missing data codes: NaN 4. Variable List A. Name: Isop Description: CrIS retrieved isoprene column density molec/cm^2 B. Name: Year Description: Year C. Name: DoY Description: Day of year (June-September) ----------------------------------------- DATA-SPECIFIC INFORMATION FOR: 2013_Acre_Isoprene.nc ----------------------------------------- 1. Number of variables: 1 2. Number of cases/rows: 365 3. Missing data codes: NaN 4. Variable List A. Name: Isop Description: CrIS retrieved isoprene column density molec/cm^2