------------------- GENERAL INFORMATION ------------------- 1. Title of Dataset: NOAA Dobson Umkehr Optimized Ozone Profile Data, Monthly Averages, NOAA GML 2. Authors: Irina Petropavlovskikh Koji Miyagawa 3. Contact information: irina.petro@noaa.gov miyagawa.koji@noaa.gov 4. Date of data collection: Boulder, Colorado (BDR): 1982-2020 Mauna Loa, Hawaii (MLO): 1982-2020 Haute, Provence, France (OHP): 1983-2019 Lauder, New Zealand (LDR): 1987-2020 -------------------------- SHARING/ACCESS INFORMATION -------------------------- 1. Licenses/restrictions placed on the data: Information created by or for NOAA is within the public domain. As such these works may be freely distributed and copied however, it is requested that in any subsequent uses of this work, NOAA be given appropriate acknowledgement. 2. Links to publications that cite or use the data: https://amt.copernicus.org/preprints/amt-2021-203/) 3. Links to other publicly accessible locations of the data: https://gml.noaa.gov/aftp/ozwv/Dobson/AC4/Umkehr/Optimized/ 4. Recommended citation for the data: Petropavlovskikh, I., Miyagawa, K., McClure-Beegle, A., Johnson, B., Wild, J., Strahan, S., Wargan, K., Querel, R., Flynn, L., Beach, E., Ancellet, G., and Godin-Beekmann, S (2021): Earth System Research Laboratory Ozone Water Vapor Group Monthly Mean Optimized Umkehr Vertical Ozone Profiles, Version [indicate version used]. [indicate subset used] [access date]. --------------------- DATA & FILE OVERVIEW --------------------- 1. File List: BDR_MM_KM_Opt.nc LDR_MM_KM_Opt_v2.nc MLO_MM_KM_Opt.nc OHP_MM_KM_Opt.nc 2. Relationship between files: Same vertical resolution taken at four different sites. -------------------------- METHODOLOGICAL INFORMATION -------------------------- The Umkehr Profiles are quality assured (profiles with more than 4 iterations, a root mean squared error over 100, or a solar Zenith angle used for normalization of greater than 77 degrees are removed). The Umkehr profiles have been optimized to remove the step changes in the archived data due to instrumental change and averaged into monthly means. ----------------------------------------- DATA-SPECIFIC INFORMATION FOR: BDR_MM_KM_Opt.nc ----------------------------------------- 1. Number of variables:7 2. Number of cases/rows: 469 3. Variable List: A. Name: Count Description: The number of successful profiles retrieved in that month B. Name: Deseasonalized Layer Ozone Description: Seasonal ozone anomaly in each layer 1-10 expressed as % difference from the seasonal mean C. Name: Layer Ozone Description: ozone in each layer 1-10 in Dobson Units (DU), mean value for that month and year D. Name: Layer Standard Deviation Description: Standard Deviation of ozone in layer 1-10 observed in that month and year E. Name: level Description: Umkehr Layer Number (1-10) for ozone profile where 1 is the lowest/closest to the surface, and 10 is the highest in altitude F. Name: Pressure Description: Umkehr layer Pressure Levels (top of the layer). In hPa. G. Name: Time Description: Number of Days since 1900-01-01 (Gregorian Calendar). 4. Data codes: NA ----------------------------------------- DATA-SPECIFIC INFORMATION FOR: LDR_MM_KM_Opt.nc ----------------------------------------- 1. Number of variables:7 2. Number of cases/rows: 408 3. Variable List: A. Name: Count Description: Count of the number of observations that month B. Name: Deseasonalized Layer Ozone Description: Seasonal ozone anomaly ozone in each layer 1-10 expressed as % difference from the seasonal mean C. Name: Layer Ozone Description: ozone in each layer 1-10 in Dobson Units (DU) D. Name: Layer Standard Deviation Description: Standard Deviation of ozone in layer 1-10 E. Name: level Description: Umkehr Layer Number (1-10) 1 is the lowest/closest to the surface, 10 is the highest. F. Name: Pressure Description: Umkehr Pressure Levels (top of level). In hPa. G. Name: Time Description: Number of Days since 1900-01-01 (Gregorian Calendar). 4. Data codes: NA ----------------------------------------- DATA-SPECIFIC INFORMATION FOR: MLO_MM_KM_Opt.nc ----------------------------------------- 1. Number of variables:7 2. Number of cases/rows: 465 3. Variable List: A. Name: Count Description: Count of the number of observations that month B. Name: Deseasonalized Layer Ozone Description: Seasonal ozone anomaly ozone in each layer 1-10 expressed as % difference from the seasonal mean C. Name: Layer Ozone Description: ozone in each layer 1-10 in Dobson Units (DU) D. Name: Layer Standard Deviation Description: Standard Deviation of ozone in layer 1-10 E. Name: level Description: Umkehr Layer Number (1-10) 1 is the lowest/closest to the surface, 10 is the highest. F. Name: Pressure Description: Umkehr Pressure Levels (top of level). In hPa. G. Name: Time Description: Number of Days since 1900-01-01 (Gregorian Calendar). 4. Data codes: NA ----------------------------------------- DATA-SPECIFIC INFORMATION FOR: OHP_MM_KM_Opt.nc ----------------------------------------- 1. Number of variables:7 2. Number of cases/rows: 437 3. Variable List: A. Name: Count Description: Count of the number of observations that month B. Name: Deseasonalized Layer Ozone Description: Seasonal ozone anomaly ozone in each layer 1-10 expressed as % difference from the seasonal mean C. Name: Layer Ozone Description: ozone in each layer 1-10 in Dobson Units (DU) D. Name: Layer Standard Deviation Description: Standard Deviation of ozone in layer 1-10 E. Name: level Description: Umkehr Layer Number (1-10) 1 is the lowest/closest to the surface, 10 is the highest. F. Name: Pressure Description: Umkehr Pressure Levels (top of level). In hPa. G. Name: Time Description: Number of Days since 1900-01-01 (Gregorian Calendar). 4. Data codes: NA