Marine heatwaves, or MHWs, occur when ocean temperatures are much warmer than usual for an extended period of time; they are specifically defined by differences in expected temperatures for the location and time of year. MHWs are a growing field of study worldwide because of their effects on ecosystem structure, biodiversity, and regional economies. Developed by oceanographers from NOAA Fisheries' Southwest Fisheries Science Center as an experimental tool for natural resource managers, the California Current MHW Tracker is a program designed to understand, describe, and provide a historical context for the 2014-16 blob. It also produces a range of indices that could help forecast or predict future MHWs expected to impact our coast.

cciea_OC_MHW_EV

Format

A data frame with 2891 rows and 5 variables:

time

Start time (seconds since 1970-01-01T00:00:00Z) [3.874176E8, 1.6003872E9]

blob_id

Blob Id () []

max_area

Maximum Area (km^2) [402937.0, 9759080.0]

duration

Duration (days) [0, 757]

max_intensity

Maximum Intensity (STDEVs from normal) [1.43471, 2.56513]

mean_intensity

Mean Intensity (STDEVs from normal) [1.43471, 2.41716]

min_dist_to_coast

Minimum distance to coast (km) [5.95226, 2772.68]

max_index

Maximum MHW index () [0.0, 0.771722]