KEYWORDS: Floods, Meteorology, Data centers, Control systems, Statistical analysis, Environmental sensing, Data modeling, Feature extraction, Information science, Information technology
Correlation analysis and accumulated anomaly as statistical approaches are employed to investigate the relationship
between the western Pacific subtropical high (sub-high for short) and May-June precipitation (MJP) in Fujian and,
moreover, NCEP/NCAR reanalysis-calculated vertical integration of transported vapor are used to make a comparative
study on differences in circulation and element fields between dry and wet years for May-June in the project province.
Results show that 1) the situation of the sub-high weaker than mean and southward of normal favors excessive MJP in
Fujian. In dry years the western Pacific positive SSTA area that intensifies the sub-high is to the south of Japan, leading
to the sub-high stronger in comparison to normal and northward of mean while in wet years the sub-high takes a more
southern position due to the western Pacific 10-25°N SST higher with respect to normal; 2) in dry (wet) years SW warm,
moist air is considerably weakened (reinforced) for South China including Fujian. However, the upper-level strengthened
SW air-transported vapor arrives at Fujian predominantly via the turning of easterly flows from the south side of the
sub-high, a new discovery worthy of further research for understanding the role of warm, wet air originating from the
Bay of Bengal in MJP forecasts over the study region.
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