This codebook.txt file was generated on 5 JAN 2023 by Samuel Kelly ------------------- GENERAL INFORMATION ------------------- 1. Title of Dataset: Shipboard turbulence and temperature profiles from the Near Inertial Coastal Experiment (NICE), 2017-2019 2. Author Information Principal Investigator Contact Information Name: Samuel M Kelly Institution: University of Minnesota Duluth Email:smkelly@d.umn.edu ORCID: 0000-0002-5941-6655 3. Date of data collection: 2017-01-01 to 2019-12-31 4. Geographic location of data collection (where was data collected?): western Lake Superior 5. Information about funding sources that supported the collection of the data: National Science Foundation, OCE-PO 1635560 5. Overview of the data (abstract): The Near Inertial Coastal Experiment (NICE) observed the physical properties of western Lake Superior from 2016-2020. The aim was to observe near-inertial internal waves and vertical mixing due to turbulence. Using the R/V Blue Heron as an observing platform during the summers of 2017, 2018, and 2019, a Rockland Scientific VMP-250 recorded 5,813 profiles of temperature, salinity, fluorescence, turbidity, and the turbulent kinetic energy dissipation rate, and an RBR fastDuet recorded 3,974 profiles of temperature. These profiles are archived here. Additional underway data from the R/V Blue Heron is available at the Rolling deck 2 Repository (R2R; https://www.rvdata.us/search/vessel/Blue%20Heron). Moored data from the NICE experiment was documented by Austin and Elmer (2022). -------------------------- SHARING/ACCESS INFORMATION -------------------------- Kelly, Samuel M. (2023). Shipboard turbulence and temperature profiles from the Near Inertial Coastal Experiment (NICE), 2017-2019. Retrieved from the Data Repository for the University of Minnesota, https://doi.org/10.13020/hyd7-c792. 1. Licenses/restrictions placed on the data: CC0 1.0 Universal (http://creativecommons.org/publicdomain/zero/1.0/) 2. Links to publications that cite or use the data: N/A 3. Links to other publicly accessible locations of the data: N/A 4. Links/relationships to ancillary data sets: N/A 5. Was data derived from another source? No 6. Terms of Use: Data Repository for the U of Minnesota (DRUM) By using these files, users agree to the Terms of Use. https://conservancy.umn.edu/pages/drum/policies/#terms-of-use -------------------------- METHODOLOGICAL INFORMATION -------------------------- 1. Description of methods used for collection/generation of data: RSI Technical Note 049: Tow-yoing with the VMP-250-IR (contact Rockland Scientific) 2. Methods for processing the data: RSI ODAS MATLAB Library Technical Manual Version 4.4 (contact Rockland Scientific) 3. Instrument- or software-specific information needed to interpret the data: ODAS v 4.5.1 (contact Rockland Scientific) 4. Standards and calibration information, if appropriate: N/A 5. Environmental/experimental conditions: N/A 6. Describe any quality-assurance procedures performed on the data: N/A 7. People involved with sample collection, processing, analysis and/or submission: Samuel Kelly and Erica Green, in addition to many others. --------------------- DATA & FILE OVERVIEW --------------------- 1. File List A. Filename: RBR.mat (data) Short description: RBR fastDuet temperature profiles B. Filename: VMP.mat (data) Short description: VMP-250 turbulence profiles C. processing_scripts.zip (4): process_VMP.m, fw_cp.m, fw_c_sound.m, fw_dens.m (processing functions, plot_duet.m (plotting script) Short description: Several Matlab functions that document how the raw VMP-250 data were processed. They are not meant to be executed. plot_duet.m is a Matlab script to plot temperature profiles from the RBR fastDuet. 2. Relationship between files: N/A 3. Additional related data collected that was not included in the current data package: A. R/V Blue Heron underway data is in the Rolling deck 2 Repository (R2R; https://www.rvdata.us/search/vessel/Blue%20Heron) B. Mooring data is described by Austin, J. and Elmer, C. (2023), An archive of Lake Superior temperature and current measurements, 2005–2020. Limnol. Oceanogr. Lett. https://doi.org/10.1002/lol2.10293 4. Are there multiple versions of the dataset? No 5. Detailed file descriptions: ------------------------------------ DATA FILE DESCRIPTION OF RBR.mat ------------------------------------ This file contains all the RBR fastDuet casts. Structure: RBR - [1 x n] where n is the number of the RBR raw data file. The structure of the RBR data is documented in the BRR software manuals. ------------------------------------ DATA FILE DESCRIPTION OF VMP.mat ------------------------------------ This file contains all the VMP-250 casts from each year. In addition to the fields listed there are numerous fields included for engineering purposes that are documented in the ODAS manual. Structure: data - [1 x n] where n is the cast number fields: yday - [1 x 1] day of year (UTC) P_slow - [1 x Nz] Pressure [dbar] should be used as a proxy for depth. Nz is the number of vertical bins. e - [2 x Nz] TKE dissipation rate [W/km] from both shear probes krho - [2 x Nz] mass diffusivity [m^2/s] computed via the Osborn (1980) relation J - [2 x Nz] turbulent heat flux [J/m^2] N2 - [1 x Nz] Buoyancy frequency squared [1/s^2], computed from linear least squares fits over ~1 m increments S - [1 x Nz] Salinity [psu] T - [1 x Nz] temperature [C] rho - [1 x Nz] density [kg/m^3] Chl - [1 x Nz] Chlorophyll (uncalibrated) Turb - [1 x Nz] Turbidity (uncalibrated) ------------------------------------ FUNCTION DESCRIPTION OF fw_cp.m ------------------------------------ Compute specific heat using Chen and Millero (1986) INPUTS: S - salinity (psu or ppt) T - temperature (Celsius) P - pressure (decibars) OUTPUTS: cp - specific heat (J/(kg K)) ------------------------------------ FUNCTION DESCRIPTION OF fw_c_sound.m ------------------------------------ Compute sound speed using Chen and Millero (1986) INPUTS: S - salinity (psu or ppt) T - temperature (Celsius) P - pressure (decibars) OUTPUTS: c - speed of sound (m/s) ------------------------------------ FUNCTION DESCRIPTION OF fw_dens.m ------------------------------------ Compute density using Chen and Millero (1986) INPUTS: S - salinity (psu or ppt) T - temperature (Celsius) P - pressure (decibars) OUTPUTS: rho - density at applied pressure (kg/m^3) This codebook.txt file was generated on 9 MAR 2022 by Sam Kelly ------------------------------------ FUNCTION DESCRIPTION OF process_VMP.m ------------------------------------ This is a heavily edited version of quick_look.m provided in the OSAS libary Function dependencies: sw_cp.m sw_c_sound.m sw_dens.m ODAS libary (contact Rockland Scientific) INPUTS: fname - name of a raw data file (.P file) OUTPUT: out - a data structure saved as "data" in 2017.mat, 2018.mat, 2019.mat ------------------------------------ SCRIPT DESCRIPTION OF plot_duet.m ------------------------------------ This Matlab script picks out the RBR fastDuet temperature profiles from a given month and plots them. It is intended as a simple example of how to read the data. Dependencies: RBR.mat