DOI: 10.5281/zenodo.15755809
title: Dataset for: Salt fingers contribute substantially to diapycnal oxygen transport into the oxygen minimum zone of the Eastern South Pacific

description: This dataset accompanies the manuscript:

**“Salt fingers contribute substantially to diapycnal oxygen transport into the oxygen minimum zone of the Eastern South Pacific”** 

submitted to *Nature Communications Earth & Environment*.

It contains processed observational data used to investigate vertical mixing and oxygen fluxes across the lower oxycline of the Eastern South Pacific Oxygen Minimum Zone (ESP-OMZ), based on field campaigns off central Chile (~36.5°S) conducted during 2020–2022.Please read README_data.txt for data description 

README – OMZ Mixing Analysis Dataset====================================

This dataset accompanies the manuscript:**"Salt fingers contribute substantially to diapycnal oxygen transport into the oxygen minimum zone of the Eastern South Pacific"**submitted to *Nature Communications Earth & Environment*.

It contains processed observational data used to investigate vertical mixing and oxygen fluxes across the lower oxycline of the Eastern South Pacific Oxygen Minimum Zone (ESP-OMZ), based on field campaigns off central Chile (36.5°S) during 2020–2022.

Directory Structure-------------------

data/├── ADCP/│   ├── JAN/                          ← no ADCP data was available on January 2020 cruise│   ├── JUL/                          ← July 2021 cruise; includes Nortek 300, 600, 1200 kHz data│   │   ├── 1200kHz/                  - U, V components and temperature time series│   │   ├── 600kHz/             │   │   ├── 300kHz/│   │   └── ADCP_Data_2021.mat        - Collated processed data│   └── OCT/                  ← October 2022 cruise; includes Nortek 300, 600 kHz │       ├── 600kHz/│       ├── 300kHz/│       └── ADCP_Data_2022.mat        - October 2022 cruise processed data├── CTD/│   ├── JAN/, JUL/, OCT/              ← Raw and processed CTD profiles for each cruise│   ├── All_CTD_data.mat              - Combined file for comparison│   └── Oxi_grad_microMkg.mat         - Precomputed oxygen gradients in µmol/kg├── VMP/│   ├── JAN/, JUL/, OCT/              ← Microstructure profiles by cruise│   │   ├── *.P, *.mat                - Raw (.P) and converted (.mat) VMP profiles│   │   └── VMP_Data_*.mat            - Processed and gridded turbulence data│   ├── ADCP_VMPtime_2021.mat│   ├── ADCP_VMPtime_2022.mat         - Time-synced ADCP–VMP segments│   └── density_intervals.mat         - Density-based layer definitions├── GLIDER/│   ├─Transect_Figure3d.mat          - Offshore glider section conducted from 01 April to 12 April 2011 along 36.5°S, spanning│   │                                   from ~73°W (coast) to 74.5°W│   │   │   └─TS_Figure3c.mat              - Temperature and Salinity profiles at 36.5°S; 74°W used to construct Figure 3c│                           See the main text for the description of the dates and location│├── Tu_colormap.mat                   ← Custom colormap used in figures

Data Description----------------

- All '*.mat' files are MATLAB 2020+ format.- Raw '.P' and '.p' files are binary outputs from the Rockland VMP profiler, processed using ODAS (Ocean Data Acquisition System).- Temperature, salinity, density, oxygen, shear, and ε/χ estimates are pre-processed and quality-controlled.- Each directory corresponds to a measurement platform and campaign month.

External Datasets (Not Included)--------------------------------

These datasets are not redistributed in this repository but were used in the manuscript:

1. **Sea Surface Temperature (SST):**   - MUR-GHRSST, NASA JPL   - DOI: https://doi.org/10.5067/GHGMR-4FJ04

2. **Sea Surface Height and Currents:**   - SSALTO/DUACS L4 altimetry (CMEMS)   - DOI: https://doi.org/10.48670/moi-00148

3. **Wind Forcing:**   - ERA5 hourly reanalysis, ECMWF   - Hersbach et al., 2020   - https://cds.climate.copernicus.eu

4. **Historical CTD Profiles:**   - NOAA World Ocean Database (WOD)   - Boyer et al., 2018   - https://www.ncei.noaa.gov/products/world-ocean-database

License-------

This dataset is distributed under the **Creative Commons Attribution 4.0 International License (CC BY 4.0)**.  If you use or modify this dataset, please cite the associated manuscript.

Contact-------

Mauro Pinto-Juica  Department of Marine Sciences  University of Gothenburg  mauro.pinto.j@gu.se