The global climate for September-November 1992: Weak warm ENSO episode conditions linger in the tropical Pacific

Journal Article · Sat Oct 01 04:00:00 EDT 1994 · Journal of Climate

DOI:https://doi.org/10.1175/1520-0442(1994)007<1565:TGCFSN>2.0.CO;2· OSTI ID:56750

Chelliah, M ^[1]

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1. Climate Analysis Center, Washington, DC (United States)

During the September-November (SON) 1992 transition season, the tropical Pacific initially featured a continuation of the normal conditions observed during July and August 1992 and then surprisingly late in the season, showed reemergence of weak warm El Nino-southern Oscillation (ENSO) eventlike conditions. The Tahiti-Darwin Southern Oscillation index, after having returned to zero in August and September, dropped to strong negative values during both October and November. During November, low-level equatorial easterliest remained anomalously weak throughout the tropical Pacific consistent with increased convective activity near the date line. Seasonal mean surface temperature over the northernmost latitudes of the Eurasian continent were much below normal in contrast to the positive anomalies generally experienced over the recent past summers. For the United States as a whole, during the SON 1992 season, the mean precipitation was near normal, however, there was considerable variability in the precipitation anomalies across the country.

• OSTI ID: 56750
• Journal Information: Journal of Climate, Journal Name: Journal of Climate Journal Issue: 10 Vol. 7; ISSN 0894-8755; ISSN JLCLEL
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
ATMOSPHERIC CIRCULATION
ATMOSPHERIC PRECIPITATIONS
CLIMATES
GLOBAL ASPECTS
METEOROLOGY
SOUTHERN OSCILLATION