Dataset: Winter temperature data from northeast Pacific embayments

Name: Winter temperature data from loggers place in shallow subtidal areas in the northeast Pacific from Oct 2019 to Jul 2024
Published: 2025-01-29
Keywords: west coast, Winter Temperature, estuaries, oceans

View Data: Data not available yet

Cite This Dataset

Spatial Extent: N:48.9617611 E:-122.66786 S:37.90789 W:-124.67496

Northeast Pacific coast, shorelines of Washington state, Sooke Basin in British Columbia, and Seadrift Lagoon in California

Temporal Extent: 2019-10-01 - 2024-07-16

Project:

Collaborative Research: Tracking fine-scale selection to temperature at the invasion front of a highly dispersive marine predator (West Coast Carcinus)

Co-Principal Investigator:

Adrianne Akmajian (Makah Tribe)

Emily Grason (Sea Grant, WSG)

Patrick McDonald (University of Washington, UW)

Carolyn Tepolt (Woods Hole Oceanographic Institution, WHOI)

Version:

Version Date:

2025-01-29

Restricted:

Validated:

Current State:

Preliminary and in progress

Winter temperature data from loggers place in shallow subtidal areas in the northeast Pacific from Oct 2019 to Jul 2024

Abstract:

Dataset includes winter temperature logger data for a suite of embayments in the northeast Pacific. Data were collected as part of an NSF-funded project on invasive European green crab adaptation; loggers were placed in the shallow subtidal in areas determined by Washington Sea Grant's Crab Team to be good environment for green crabs. Loggers were placed by multiple collaborators without a fully standardized approach; metadata are incomplete but include all available information. Loggers used were iButtons and HOBO pendant loggers. Two loggers were placed at each site in the shallow subtidal with the goal that they were always submerged in water while deployed (i.e., not emersed). Logging frequency depended on the monitor type; iButtons captured water temperatures every 2.15 hours, and HOBO loggers recorded water temperature every 30 minutes over the winter. Deployment duration varied between years and sites, but typically ran from October - April.

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Methods & Sampling

Loggers were placed in the shallow subtidal in areas determined by Washington Sea Grant's Crab Team to be good environment for green crabs. Loggers were placed by multiple collaborators without a fully standardized approach; metadata are incomplete but include all available information. Loggers used were iButtons (Maxim Integrated; models DS1921G, DS1921Z, or DS1921G-F5) in 2019-2023, switching to HOBO loggers (Onset; model MX 2201) in 2022 (Makah Bay) or 2023 (all sites). iButtons were housed in waterproof housing capsules (DS9107), and both types of logger were placed within short lengths of PVC, which were open at both ends, to allow water flow but reduce temperature changes related direct light exposure, and any physical damage. Two loggers were placed at each site in the shallow subtidal, generally anchored on cinderblocks or pieces of PVC pushed into the substrate. Loggers were typically started before they were deployed in the field, sometimes weeks before, so include some air temperature data before deployment; metadata includes actual dates and times of deployment when known. Logging frequency varied by model: iButtons were set to log every 2.15 hours, and HOBOs logged every 30m over the winter. Duration varied between years and sites, but typically ran from October - April. Loggers were generally not set to roll over (but see notes), and data were retrieved in the spring.

Problems/Issues

Some loggers malfunctioned; these are noted and no files are available. Also note recorded observations of movement or fouling of loggers as may impact accuracy of recording water temperature.

Data Processing Description

The raw .csv files were exported from HOBOware logger reading software. Files were not cleaned or trimmed, except as noted. A spreadsheet with all available metadata for deployments and retrievals was created.

BCO-DMO Processing

- Imported "BCO-DMO_temp-logger_metadata_NSF-1850996.csv" into BCO-DMO system
- Converted all dates to YYYY-MM-DD ISO 8601 format
- Replaced the following filenames with the actual filenames that were submitted:
367.23-24.WinterB → 367.23.24.WinterB.csv
384.23-24.Winter.B → 384.23.24.WinterB.csv
385.23-24.WinterB → 385.23.24.WinterB.csv
367.23-24.Winter → 367.23.24.WinterA.csv
384.23-24.Winter → 384.23.24WinterA.csv
385.23-24.Winter → 385.23.24.WinterA.csv
- Imported 62 raw CSV files, normalizing for file format, value format, and precision
- Concatenated all the raw files into "wintertemp_all"
- Removed rows in "wintertemp_all" without temperature values that were produced when the logger was tracking other functions
- Converted datetimes for each type of date format (AM/PM, datetime with seconds, datetime without seconds) into ISO datetime format in "wintertemp_all"
- Converted measurement datetime to UTC in "wintertemp_all"
- Joined "wintertemp_all" with "BCO-DMO_temp-logger_metadata_NSF-1850996"
- Renamed fields to better represent values
- Exported file as "949897_v1_temp_logger_23_24"

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1850996
NSF Division of Ocean Sciences	OCE-1850945

Deployments

None available yet

Instruments

Onset HOBO Pendant MX2201 temperature logger

Supplied Name: HOBO MX2201 loggers (Onset)

Supplied Description:

Loggers used were iButtons (Maxim Integrated; models DS1921G, DS1921Z, or DS1921G-F5) in 2019-2023, switching to HOBO loggers (Onset; model MX 2201) in 2022 (Makah Bay) or 2023 (all sites).

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

Water Temperature Sensor

Supplied Name: Thermochron iButton (Maxim) primarily model DS1921G

Supplied Description:

Loggers used were iButtons (Maxim Integrated; models DS1921G, DS1921Z, or DS1921G-F5) in 2019-2023, switching to HOBO loggers (Onset; model MX 2201) in 2022 (Makah Bay) or 2023 (all sites).

Instrument Type

Generic Name: Water Temperature Sensor

Acronym: Water Temp Sensor

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

Generic Description:

General term for an instrument that measures the temperature of the water with which it is in contact (thermometer).

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
ISO_DateTime_UTC	Datetime (UTC) of measurement in ISO 8601 format Format: %Y-%m-%dT%H:%MZ	unitless	ISO_DateTime_UTC
Local_DateTime	Datetime (local, Pacific Standard Time) of measurement in ISO 8601 format Format: %Y-%m-%dT%H:%M	unitless	ISO_DateTime_Local
Temperature	Water temperature	degrees Celsius	temp
File_Name	Name of associated with original temperature data file	unitless	file_name
SiteNumber	WA Sea Grant code for site	unitless	Site_ID
SiteName	Site name	unitless	site
HabType	Habitat type	unitless	site_descrip
Type	Logger Brand	unitless	instrument
Model	Logger model number	unitless	inst_model
SerialNumber	Individual logger serial number	unitless	inst_serial_numb
LoggerStartDate	Date logger was started Format: %Y-%m-%d	unitless	date_begin
DeploymentDate	Date logger was deployed in the field Format: %Y-%m-%d	unitless	date
DeploymentTime	Local Time logger was deployed in the field	unitless	time
DeploymentDateTime	Local Datetime (local, Pacific Standard Time) logger was deployed in the field Format: %Y-%m-%dT%H:%M	unitless	ISO_DateTime_Local
Latitude	Latitude (decimal degrees), North is positive	decimal degrees	lat
Longitude	Longitude (decimal degrees), East is positive	decimal degrees	lon
DeployedBy	Person who deployed / retrieved the logger	unitless	responsible_entity
RetrievalDate	Date logger was retrieved Format: %Y-%m-%d	unitless	date_end
AnchorType	How logger was held in place in the shallow subtidal	unitless	site_descrip
TimeVar	Offset between logged time and actual time (measured at retrieval)	seconds	time_elapsed
Notes	Any additional information on loggers or records	unitless	comment

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Dataset: Winter temperature data from northeast Pacific embayments