News
03/08/2024, 5:33 am EST

Record Warm Tropical South Atlantic Index/El Nino Inspired Hot/Dry Summer Most of Brazil

The tropical South Atlantic continues to observe record warm ocean temperatures. The influence on summer climate of the anomalous warmth was significant. Strong difluence in the upper atmosphere across the warm water zone represents anomalous convection (thunderstorm activity). To compensate for the rising air motion, an area of subsidence (sinking motion) over South America was observed during meteorological summer. The sensible weather result was drier and hotter than normal climate across much of Brazil. Of course, El Nino also enhanced this climate anomaly.
03/05/2024, 2:53 pm EST

Finding Climate Change in Northern Hemisphere Wintertime Upper Air Pattern During El Nino   

A comparison of northern hemisphere 500 MB height anomalies for DEC/JAN/FEB during the strongest 3 El Nino events of the past 30 years to the just-ended event yields several interesting observations. The general 500 MB anomaly pattern is remarkably consistent but notice how each year produces less and less bold upper trough signatures.