34 Bottom Temperature - in situ

Description: The data presented here are time series of regional average bottom temperature anomalies from ship-based measurements made on the Northeast Continental Shelf.

Indicator family:

Contributor(s): Paula Fratantoni; Chris Melrose; Tamara Holzwarth-Davis

Affiliations: NEFSC

34.1 Introduction to Indicator

The bottom temperature index incorporates near-bottom temperature measurements collected on Northeast Fisheries Science Center (NEFSC) surveys between 1977-present. Early measurements were made using surface bucket samples, mechanical bathythermographs and expendable bathythermograph probes, but by 1991 the CTD – an acronym for conductivity temperature and depth – became standard equipment on all NEFSC surveys. Near-bottom refers to the deepest observation at each station that falls within 10 m of the reported water depth. Observations encompass the entire continental shelf area extending from Cape Hatteras, NC to Nova Scotia, Canada, inclusive of the Gulf of Maine and Georges Bank.

34.2 Key Results and Visualizations

No response

34.2.1 MAB

34.2.2 NE

34.3 Indicator statistics

Spatial scale: by EPU

Temporal scale: Annual

Synthesis Theme:

34.4 Implications

No response

34.5 Get the data

Point of contact:

ecodata name: ecodata::bottom_temp

Variable definitions

Tbot_anom; Definition: Bottom temperature anomaly; Units: degree Celsius

Indicator Category:

34.6 Public Availability

Source data are publicly available.

34.7 Accessibility and Constraints

No response

tech-doc link https://noaa-edab.github.io/tech-doc/bottom_temp.html