This FITCH_readme_data_20200603.txt file was generated on 20200603 by Kyle Fitch ------------------- GENERAL INFORMATION ------------------- 1. Title of Dataset Corrected Liquid Water Path Data and mascpy code for "Graupel Precipitating from Thin Arctic Clouds with Liquid Water Paths less than 50 g m-2" 2. Author Information Fitch, Kyle E. and Timothy J. Garrett Principal Investigator Contact Information Name: Tim Garrett Institution: Dept. of Atmospheric Sciences, University of Utah Address: 135 S 1460 E, William Browning Building Email: tim.garrett@utah.edu Associate or Co-investigator Contact Information Name: Kyle Fitch Institution: Dept. of Atmospheric Sciences, University of Utah Address: 135 S 1460 E, William Browning Building Email: kyle.fitch@utah.edu Alternate Contact Information Name: Institution: Address: Email: 3. Date of data collection (single date, range, approximate date) Processed between 20170627 and 20190320 by Maximilian Maahn (CU Boulder,NOAA) and delivered to Kyle Fitch in two separate batches on 20180730 and 20191125 4. Geographic location of data collection (where was data collected?): Raw data were collected at the Third ARM Mobile Facility at the Oliktok Point, Alaska (OLI) site (70.5100N 149.8650W) prior to processing. 5. Information about funding sources that supported the collection of the data: This work is supported by the U.S. Department of Energy (DOE) Atmospheric System Research program (DE-SC0016282). Maximilian Maahn was also supported by the DOE ASR program during the collection of the data. -------------------------- SHARING/ACCESS INFORMATION -------------------------- 1. Licenses/restrictions placed on the data: CC BY NC - Allows others to use and share your data non-commercially and with attribution. 2. Links to publications that cite or use the data: While no other publications use precisely the same data, similar data is cited in numerous papers, with a recent example found here: https://journals.ametsoc.org/doi/pdf/10.1175/JAS-D-18-0122.1 3. Links to other publicly accessible locations of the data: None 4. Links/relationships to ancillary data sets: The raw data can be retrieved from the DOE Atmospheric Radiation Measurement (ARM) data archive at http://dx.doi.org/10.5439/1025248 5. Was data derived from another source? If yes, list source(s): Original raw data from DOE ARM 3-Channel Microwave Radiometer (MWR3C) at http://dx.doi.org/10.5439/1025248 6. Recommended citation for the data: Fitch, Kyle E. and Timothy J. Garrett. 2020. Corrected Liquid Water Path Data for "Graupel Precipitating from Thin Arctic Clouds with Liquid Water Paths less than 50 g m-2". The Hive: University of Utah Research Data Repository. --------------------- DATA & FILE OVERVIEW --------------------- 1. File List A. Filename: corrected_lwp.tar (or whatever .tar filename is used) Short description: This container includes 680 files of processed LWP and PWV data in NetCDF format. 2. Relationship between files: Individual NetCDF files contain one complete day (24-hour period) of data 3. Additional related data collected that was not included in the current data package: Raw MWR3C data from http://dx.doi.org/10.5439/1025248 4. Are there multiple versions of the dataset? no If yes, list versions: Name of file that was updated: i. Why was the file updated? ii. When was the file updated? Name of file that was updated: i. Why was the file updated? ii. When was the file updated? -------------------------- METHODOLOGICAL INFORMATION -------------------------- 1. Description of methods used for collection/generation of data: Retrievals used the MWR3C instrument located at the Third ARM Mobile Facility at the Oliktok Point (OLI) site 2. Methods for processing the data: LWP and PWV retrievals using the updated multi-frequency MWR Retrieval (MWRRET v2) algorithm (Turner et al. IEEE TGRS 2007). LWP and PWV data derived using an optimal estimation based physical retrieval. Forward model used is MonoRTM v5.0 (with fixed coefficients for TKC) from AER, Inc. Retrievals only valid for elevation angle equal to 90 deg (i.e., zenith). Retrieval developed by Dr. David Turner. 3. Instrument- or software-specific information needed to interpret the data: Pre-processed data are from the 3-Channel Microwave Radiometer described in the Microwave Radiometer – 3 Channel (MWR3C) Handbook provided and located at https://www.arm.gov/publications/tech_reports/handbooks/mwr3c_handbook.pdf. Metadata can be accessed for each of the files with the use of a high-level programming language able to read NetCDF files, such as MATLAB or Python. 4. Standards and calibration information, if appropriate: See handbook in #3 above 5. Environmental/experimental conditions: Meteorological conditions vary by date and time and can be retrieved in a separate dataset on the ARM archive available at http://dx.doi.org/10.5439/1025220 6. Describe any quality-assurance procedures performed on the data: Described in Turner et al. IEEE TGRS (2007) 7. People involved with sample collection, processing, analysis and/or submission: Data were processed by Dr. Maximilian Maahn, who can be contacted at maximilian.maahn@colorado.edu ----------------------------------------- DATA-SPECIFIC INFORMATION FOR: olimwrret2turnM1.c1.YYYYMMDD.xxxxxx.cdf ----------------------------------------- 1. Number of variables: 44 2. Number of cases/rows: approximately 21,600 (approximately one measurement every 4 seconds) 3. Variable List (see metadata in each NetCDF file for full list of variables) A. Name: phys_lwp Description: Liquid water path In units of g m^-2 B. Name: phys_pwv Description: Precipitable water vapor In units of cm C. The full list of variables can be accessed by reading the metadata for any of the files using a high-level programming language that can read NetCDF files, such as MATLAB or Python. 4. Missing data codes: N/A 5. Specialized formats of other abbreviations used