Open AccessAdverse meteorological phenomena associated with low‐level baric troughs in the Alagoas State, Brazil, in 2003
Author(s) -
Rodrigues Luis Ricardo Lage,
Fedorova Natalia,
Levit Vladimir
Publication year - 2010
Publication title -
atmospheric science letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.951
H-Index - 45
ISSN - 1530-261X
DOI - 10.1002/asl.273
Subject(s) - trough (economics) , climatology , anomaly (physics) , subtropics , subtropical ridge , environmental science , disturbance (geology) , synoptic scale meteorology , atmospheric sciences , geography , low pressure area , atmosphere (unit) , meteorology , geology , atmospheric pressure , precipitation , geomorphology , physics , condensed matter physics , fishery , biology , economics , macroeconomics
Baric troughs were studied over the Alagoas State, Brazil, in 2003. The relationship between these synoptic systems, weekly sea surface temperature anomaly and adverse meteorological phenomena in the Alagoas State, was analyzed. The maximum trough frequency occurred at low levels during the wetter and colder season in the investigated region (June and July). Most of the troughs were observed at 1200 UTC. It was also noted that 87% of the troughs was associated with wavy disturbance in the trade winds on the northwestern periphery of the subtropical South Atlantic High. These troughs were associated with meteorological phenomena in a stable and an unstable atmosphere. Copyright © 2010 Royal Meteorological Society