(Version 1.0, released November 19, 2019, experimental product)
Expect further developments, including more regional products, in the coming months.***
Marine Heatwaves are modelled off their terrestrial namesakes and are prolonged periods of anomalously high sea
surface temperature (SST). In effect, they are categorized SST anomalies (c.f., the NOAA Coral Reef Watch (CRW)
daily global 5km SST Anomaly product).
They also are a more general version of the CRW daily global 5km Coral Bleaching HotSpot
product, but rather than being aimed specifically at corals, they provide a more generalized description of marine heat stress
that is likely applicable to a broader range of marine life. The next important step, therefore, is to develop a generalized accumulation of
heat stress, much like the
daily global 5km Degree Heating Week (DHW) product accumulates HotSpots.
Since the climatology does not have a value for February 29 in each leap year, when this value was needed, both the average
and 90th percentile SST values were calculated using an average of the SST values from February 28 and March 1.