Dataset: Coastal intertidal temperatures

Name: Water temperatures measured via data loggers deployed at 19 rocky intertidal sites in California, USA and Baja California, Mexico from spring 2022 to fall 2023
Published: 2024-05-06
Keywords: temperature, intertidal, California, Mexico, oceans

View Data: Data not available yet

Cite This Dataset

Spatial Extent: N:40.396 E:-116.037 S:30.459 W:-124.378

Rocky intertidal zone of California, USA and Baja California, Mexico

Temporal Extent: 2022-04-12 - 2023-10-31

Project:

Predicting impacts of coastal species redistribution in a changing climate (CoastalRedistImpacts)

Principal Investigator:

Cascade Sorte (University of California-Irvine, UC Irvine)

Scientist:

Lydia Ladah (Ensenada Center for Scientific Research and Higher Education, CICESE)

Julio Lorda (Universidad Autónoma de Baja California, UABC)

Student:

Ryan Beshai (University of California-Irvine, UC Irvine)

BCO-DMO Data Manager:

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

Version:

Version Date:

2024-05-06

Restricted:

Validated:

Current State:

Data not available

Water temperatures measured via data loggers deployed at 19 rocky intertidal sites in California, USA and Baja California, Mexico from spring 2022 to fall 2023

Abstract:

Coastal zones are some of the most productive and most threatened ecosystems on Earth, yet our ability to predict their vulnerability or resilience is limited due to the highly dynamic nature of these habitats. Importantly, surface temperatures measured at broad scales (e.g., by satellites) cannot capture onshore temperatures which vary at meso- and micro-scales due to, e.g., aspect, solar radiation, waves, etc. We monitored intertidal temperatures via data loggers deployed at 19 rocky intertidal sites in California, USA and Baja California, Mexico. Loggers were deployed at 1.0 meter (m) above MLLW (mean lower-low water) at all sites and at 0.5 and 1.5 m at a subset of sites. At each site and tide height (for sites with multiple loggers), completeness of the temperature record varies but most provide continuous records for up to ~18 months from spring 2022 to fall 2023.

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Methods & Sampling

Temperature loggers were attached to the inside of a white PVC cap with cable ties, and the cap was bolted flush with the rock in the intertidal zone. Loggers were deployed at 1.0 meter (m) depth (and, at some sites, 0.5 and 1.5 m) above MLLW (mean lower-low water) as determined using a laser level and tide predictions (https://tide.arthroinfo.org/). The loggers recorded temperatures continuously at 30-minute intervals.

Problems/Issues

There are some gaps in data due to loss of loggers and malfunctions, particularly at Little Corona 1.0 m, Heisler Park 0.5 m, and Cardiff State Beach 0.5 m. Since loggers were deployed at 1.0 m at all sites, there is the best data availability at this elevation, with the exception of Little Corona.

Data Processing Description

Temperature data were cleaned "by hand" at the start and end of deployments to ensure that all records are from the time that the loggers were deployed in the intertidal zone.

BCO-DMO Processing

- Imported original file "Logger Data (Range Shift NSF) - FINAL.xlsx" into the BCO-DMO system.
- Replaced years of "0202" with "2022".
- Renamed fields to comply with BCO-DMO naming conventions.
- Converted date and time columns to ISO 8601 format in PST (UTC-8:00); removed the original, separate Date and Time columns.
- Created an ISO 8601 date-time column in UTC.
- Saved the final file as "926813_v1_coastal_intertidal_temperatures.csv"

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-2124438

Deployments

None available yet

Instruments

Onset HOBO Pendant MX2201 temperature logger

Supplied Name: Pendant MX (part ID: MX2201)

Supplied Description:

Pendant MX (part ID: MX2201; ±0.5°C Accuracy) temperature loggers from Onset Corp. (Bourne, MA, USA)

Instrument Type

Generic Name: Onset HOBO Pendant MX2201 temperature logger

Acronym: Onset HOBO Pendant MX2201

Generic Description:

The Onset HOBO MX2201 is an in-situ instrument for wet or underwater applications. It supports soil temperature, temperature, and water temperature. A one-channel logger that records up to approximately 96,000 measurements or internal logger events with 8K bytes memory. It has a polypropylene housing case. Uses Bluetooth to transmit data. Can be used with a solar radiation shield. Measurement range: -20 deg C to 70 deg C. Accuracy: +/- 0.50 deg C from 0 deg C to 50 deg C. Water depth rating: 30.5 m

Onset HOBO TidbiT v2 (UTBI-001) temperature logger

Supplied Name: HOBO TidbiT v. 2 (part ID: UTBI-001)

Supplied Description:

HOBO TidbiT v. 2 (part ID: UTBI-001; -20°C to 70°C Temperature Measurement Range with ±0.2°C Accuracy) temperature loggers from Onset Corp. (Bourne, MA, USA)

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
Site_Name	Name of the location at which temperature was measured	unitless	site
Latitude	Latitude of sampling location (positive values = North)	decimal degrees	lat
Longitude	Longitude of sampling location (negative values = West)	decimal degrees	lon
Elevation	Tide height at which temperature was measured	meters above mean lower-low water	sea_elevation
ISO_DateTime_PST	Date and time of temperature measurement in ISO 8601 format; time zone = PST (UTC-8:00) Format: %Y-%m-%dT%H:%M:%S	unitless	ISO_DateTime_Local
ISO_DateTime_UTC	Date and time of temperature measurement in ISO 8601 format; time zone = UTC Format: %Y-%m-%dT%H:%M:%SZ	unitless	ISO_DateTime_UTC
Temperature	Temperature measurement	degrees Celsius	temp

Database

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Dataset: Coastal intertidal temperatures