FVCOM/GLORYs Lobster Thresholds
Tracking Lobster Temperature Exposure Along the NE Shelf
About: FVCOM & GLORYS SST/BT Analyses
This document reviews the temperature characteristics for regions along the Northeast shelf comparing timeseries for both FVCOM (1978-2016) and GLORYs ocean reanalysis model outputs from 1993-2023.
Temperature change is presented for 19 zones in the area, and presented with respect to key temperatures for lobster growth and survival.
Load FVCOM Timeseries
Load GLORYS Timeseries
Timeseries for the same regions have been processed in python, for both surface and bottom layers. That process can be found in Lobster-ECOL/py/GLORYS-prep/Regional_SurfBot_Temp_Processing.ipynb
Study Area & Focal Regions
For this project, we have divided the study area into the following regions. Within 12 nautical miles of the coast is our inshore area. This has been further divided by NMFS statistical areas to subdivide the coastal habitat. Beyond 12 nautical miles we have two broader offshore areas: Gulf of Maine + Georges Bank, and Southern New England. These offshore areas extend until hitting the 1500m depth contour of the shelf break.
Absolute Temperature Changes
The first comparisons between the two data sources is absolute temperature differences.
Temperature Anomalies
Threshold Events
Days Over 20C
Preferred Temperature Days 12-18C
Growing Season Start >10C
Growing Season End
Regional Hospitability
Are any regions becoming inhospitable based on thermal characteristics?