Dataset: Water temperature at coral reefs in Palau

Name: Water temperature measured at six coral reefs sites in Palau from 2021 to 2023
Published: 2024-05-02
Keywords: Coral, temperature, oceans

Cite This Dataset

DOI:10.26008/1912/bco-dmo.926498.1

Spatial Extent: N:7.36722 E:134.4766 S:7.16162 W:134.34697

Republic of Palau

Temporal Extent: 2021-11-02 - 2023-05-12

Project:

Collaborative Research: How do selection, plasticity, and dispersal interact to determine coral success in warmer and more variable environments? (Palau coral selection plasticity dispersal)

Principal Investigator:

Kirstin Meyer-Kaiser (Woods Hole Oceanographic Institution, WHOI)

BCO-DMO Data Manager:

Shannon Rauch (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2024-05-02

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Water temperature measured at six coral reefs sites in Palau from 2021 to 2023

Abstract:

Water temperature was measured at six coral reef sites in Palau from 2021 to 2023. Loggers (Hobo Tidbit) were attached to threaded rods embedded in the reef using zip ties. Water temperature was measured every 30 minutes.

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Archival Copy

Version Date	Archive	Persistent Identifier (PID)	Date PID Issued
2024-05-02	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.26008/1912/bco-dmo.926498.1	2024-05-13

Methods & Sampling

Data were collected from 6 sites located in the Republic of Palau from November 2021 to May 2023. Stainless steel (316, 1/4-20 size) threaded rods were driven into dead coral or sand using a hammer or by hand. Duplicate loggers (Hobo Tidbit) were attached to threaded rods at each site and left in place between field seasons in 2021 to 2023. Loggers were changed in November 2022.

Problems/Issues

No loggers were recovered from the site Taoch in May 2023. Therefore, data are missing for Taoch from November 2022 to May 2023.

Data Processing Description

Temperature measurements from before and after the deployment were removed (i.e., temperature in the lab or on the boat). Temperatures measured by duplicate loggers were averaged for a given site.

BCO-DMO Processing

- Created a site locations table, "site_locations.csv", using the site latitudes and longitudes provided by PI by email.
- Converted latitude and longitude values from degrees and decimal minutes to decimal degrees, and rounded to 5 decimal places.
- Imported original file "Temp_all sites_2021-2023.csv" into the BCO-DMO system.
- Marked "NaN" as a missing data value (missing data are blank/empty in the final CSV file).
- Unpivoted the table to create a new column for "Site" and a column for "Temperature".
- Converted date/time field to ISO 8601 format (local).
- Created a date/time column for UTC.
- Added columns for Latitude and Longitude to the primary data table by joining to the site locations table.
- Sorted data by Site name and then date/time.
- Saved the final file as "926498_v1_temperature_palau_reefs.csv".

Data Files

File
926498_v1_temperature_palau_reefs.csv (Comma Separated Values (.csv), 10.27 MB) MD5:7f844bfdb75c4bc8c77549b3abfc6342 Primary data file for dataset ID 926498, version 1

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-2048678

Deployments

None available yet

Instruments

Onset HOBO TidbiT v2 (UTBI-001) temperature logger

Supplied Name: Hobo Tidbit temperature logger (Onset Corp., Wareham, MA, part number UTBI-001)

Supplied Description:

Instrument Type

Generic Name: Onset HOBO TidbiT v2 (UTBI-001) temperature logger

Acronym: HOBO TidBit v2

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/134/

Generic Description:

A temperature logger that measures temperatures over a wide temperature range. It is designed for outdoor and underwater environments and is waterproof to 300 m. A solar radiation shield is required to obtain accurate air temperature measurements in sunlight (RS1 or M-RSA Solar Radiation Shield). With an operational temperature range between -20 degrees Celsius and +70 degrees Celsius, the TidbiT v2 has an accuracy of +/-0.21 and a resolution of 0.02 degrees Celsius.

Parameters

Date and time formats are described in python strftime() syntax.

Supplied Name	Supplied description	Supplied Units	Standard Name
ISO_DateTime_Local	Date and time of measurement in ISO 8601 format; time zone: GMT+09:00. Format: %Y-%m-%dT%H:%M	unitless	ISO_DateTime_Local
ISO_DateTime_UTC	Date and time of measurement in ISO 8601 format; time zone: UTC. Format: %Y-%m-%dT%H:%MZ	unitless	ISO_DateTime_UTC
Site	Site name	unitless	site
Latitude	Site latitude; positive values = North	decimal degrees	lat
Longitude	Site longitude; positive values = East	decimal degrees	lon
Temperature	Water temperature	degrees Celsius	temp