The Coastal Upwelling Transport Index (CUTI, pronounced “cutie”) and the Biological Effectiive Upwelling Transport Index (BEUTI, pronounced “beauty”) are two new west coat upwelling indices. The indices are derived using ocean models, satellite data, and in situ data.
CUTI provides estimates of vertical transport near the coast. It was develped as a more accurate alternative to the “Bakun Index”.
BEUTI provides an estimate of the nitrate flux near the coast. This flux may be more relevant than upwelling strength for biological responses.
For more details of the calculation, how they differ from the Bakun Index and access to data files of CUTI and BEUTI see https://mjacox.com/upwelling-indicies
The top row of the figure (below) shows daily values of the CUTI and BEUTI index for the last 90 days. The black contour intervals are every 2 units for CUTI and every 50 units for BEUTI.
The bottom row of the figure shows monthly anomaly values for the same indexes but for the last 3 years.