AOML
NOAA

Oceans and Ecosystems

Physical Oceanography and Fisheries

BFT_Index: Gulf of Mexico Time-series

This webpage provides access to near-real-time time-series of the availability of overall favorable conditions for bluefin tuna larvae in the Gulf of Mexico.

Time-series of favorable areas for bluefin tuna larvae are computed as follows

where BFT_GOM is an index computed as a function of time t that indicates the overall percentage of favorable areas for bluefin tuna larvae in the Gulf of Mexico. In this formula, i indicates the location of individual grid points, t the time-dependency, and N the total number of grid points in the Gulf of Mexico (N=1487).

BFT Spawning in Gulf of Mexico is reported during the Northern Hesmisphere Spring months, with BFT larvae being captured mostly from early-April to late-May.

Dates available: 03/01/1993 - present

Notice: These time-series, and derived quantities, are updated on a monthly basis.

Spring-time conditions for bluefin tuna larvae in the Gulf of Mexico during last 20 years

State by year

BFT_GOM: spring

Values reported inside the color-coded boxes indicate spring-time residuals of percentage of favorable areas for bluefin tuna larvae in the Gulf of Mexico. Positive residuals indicate a higher than usual availability of favorable areas, whereas negative residuals indicate lower than usual availability of favorable areas.

Indicators of favorable conditions for bluefin tuna larvae in the Gulf of Mexico