4/12/2023 0 Comments Temperature anomaly![]() Springtime SST anomalies in the North Atlantic were also found to be related to extreme US tornado outbreaks 16. Also, warm SST anomalies in the Gulf of Mexico, which are negatively correlated with the tropical Pacific SST, are a potential predictor for moist instability, by enhancing the low-level moisture transport, influencing the storm characteristics, and increasing the number of tornadoes in the US Central Plains in Spring 13, 14, 15. In particular, the warm (cold) SST anomalies in the tropical Pacific associated with El Niño (La Niña) were shown to reduce (increase) the number of tornadoes over the central US 12. Minor attention is currently paid to the influence of SST on severe localized convective features, such as supercells and tornadoes such studies mainly focused on the effect of El Niño Southern Oscillation on tornado activity in USA. On the other hand, the effect of the Adriatic SST varied considerably in six case studies of intense precipitation over Italy 11. Small scale SST features played a key role in some heavy rainfall events in Northern Italy 9, while SST in specific sub-areas controlled the development of three precipitation episodes in Spain 10. The intensification and persistence of a tropical-like cyclone in the Mediterranean Sea were shown to depend significantly on SST 8. Intense sea surface fluxes favor heavy rainfall especially in late Summer and in Fall 7. The Mediterranean basin is regularly affected by severe convective events, often of limited predictability 4, which are frequently related to the cyclone activity in the region 5, 6. The increase in SST in the last 30 years was shown to be crucial in the July 2012 precipitation extreme near the Black Sea 3. Starting from the analysis of windstorm Xynthia, it was suggested that a warmer SST and potentially enhanced latent heat release in future climate conditions may increase the windstorm risk in southwestern Europe 2. Numerical simulations proved that hurricane Sandy in 2012 would have dramatically intensified over a warmer SST 1. These retrievals are remapped, averaged and composited hourly and made available for users to access.Scientific literature has recently shown that SST can significantly affect high impact weather. The infrared channels determine the SST, and all channels (except the 6.7 and 13.3 km) determine the cloud contamination. or 13.3 micron) images are processed to retrieve SST retrievals at 4-km resolution. The GOES-11 and 12 imagers observe both northern and southern hemisphere every half an hour. Pinatubo).Ĭolor enhanced versions of Sea Surface Temperatures from GOES Imager. Some SST monthly means are omitted due to contamination by volcanic aerosols (1981-1983 and some of 1991-1992 due to the eruption of Mt. These datasets, based on NESDIS's AVHRR data, have been accumulated into weekly means (U of Miami - RSMAS) and provided to NASA-JPL for distribution. The AVHRR-and-VIIRS CoastWatch SST products supply users with operational satellite data, processed using TeraScan software and CoastWatch utilities.Ī satellite-only monthly mean time series of SST at 36 km resolution has been provided by Al Strong (ORA/ORAD) based on only nighttime SST satellite observations. ![]() The operational night-only SST analysis is at a resolution of 50 km and is used to produce the SST anomaly charts. Contour charts are used to depict both global and regional SST values in various grid spacing. Graphical depiction of Sea Surface Temperature gridded products. Monthly Mean SST Anomaly Charts (1984-1998) The climatology is based on nighttime observations from 1984-1993, with SST observations from the years 19 omitted due to aerosol contamination from the eruption Mt. The SST anomaly field (degrees C) is the difference between the 50 km nighttime-only SST and the nighttime-only monthly mean SST climatology. Positive numbers mean the temperature is warmer than average negative means cooler than average. This global 5km Sea Surface Temperature (SST) Anomaly product, displays the difference between today's SST and the long-term average. (SST is defined as the skin temperature of the ocean surface water.)
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