Research notes and updates from the team.
In July 2022, the equatorial sea surface temperatures (SSTs) in the central-eastern tropical Pacific Ocean remained consistent with weak La Niña conditions (NINO3.4 index value in July 2022 was -0.68). According to the early-August CPC ENSO forecast, La Niña is likely to persist until boreal winter 2022-23 with 60% probabilities, which would be the first triple-dip event of the 21st century.
Read more →The SST anomaly for NINO3.4 during the Apr-Jun season was -0.89 °C, and for the month of June it was -0.68 °C. The most recent weekly (13 Jul 2022) anomaly in the NINO3.4 region was -0.6 °C, indicating borderline La Niña conditions. The IRI’s definition of El Niño, like NOAA/Climate Prediction Center’s, requires that the SST anomaly in the NINO3.4 region (5S-5N; 170W-120W) exceed 0.5 °C.
Read more →In June 2022, the equatorial sea surface temperatures (SSTs) in the central-eastern tropical Pacific Ocean remained consistent with weak La Niña conditions (NINO3.4 index value in June 2022 was -0.68). In the early-July CPC/IRI ENSO forecast, La Niña is likely to persist during the rest of the boreal summer, fall and early winter with probabilities ranging from 60 to 66%.
Read more →The SST anomaly for NINO3.4 during the Mar-May season was -0.96 °C, and for the month of May it was -1.05 °C. The most recent weekly (08 Jun 2022) anomaly in the NINO3.4 region was -0.7 °C, suggesting a weakening of the current La Niña event.
Read more →In May 2022, the equatorial sea surface temperatures (SSTs) in the central-eastern tropical Pacific Ocean were below average, and tropical Pacific atmosphere remained consistent with La Niña conditions. The recent observed oceanic and atmospheric anomalies across the tropical Pacific have, however, shown some weakness.
Read more →The SST anomaly for NINO3.4 during the Feb-Apr season was -0.85 C, and for the month of April it was -0.95 C. The most recent weekly (11 May 2022) anomaly in the NINO3.4 region was -1.1 C, indicating a continuation of the current La Niña event.
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