Southern Hemisphere Weather

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• IR imagery of Hurricane Caterina (25 Mar 2004)

• String of South Indian tropical cyclones (14–28 Feb 2007)

• Discussion of extreme negative Antarctic Oscillation events

Statistical Climatology of Extreme Hot and Cold Days East of the Andes

ATM 601 Class Project

• Preliminary work: Part I Part II Part III

METHODOLOGY

• FIG. 1. Plot of locations examined

RESULTS

• 925-hPa temperature climatology

FIG. 2. Histogram (1980–1999)

Mean, median, and standard deviation (1980–1999)

FIG. 3a. All times

FIG. 3b. 100 coldest 925-hPa temperatures

FIG. 3c. 100 hottest 925-hPa temperatures

Occurrence by month (1980–1999)

FIG. 4a. 100 coldest 925-hPa temperatures

FIG. 4b. 100 hottest 925-hPa temperatures

Dates of extreme events (1980–1999)

TABLE I. Cold

TABLE II. Hot

• 925–700-hPa lapse rate climatology

Histograms (1980–1999)

FIG. 5a. All times

FIG. 5b. 100 coldest 925-hPa temperatures

FIG. 5c. 100 hottest 925-hPa temperatures

Mean, median, and standard deviation (1980–1999)

FIG. 6a. All times

FIG. 6b. 100 coldest 925-hPa temperatures

FIG. 6c. 100 hottest 925-hPa temperatures

• Sea level pressure climatology

Histograms

FIG. 7a. All times (1958–2000)

FIG. 7b. 100 coldest 925-hPa temperatures (1980–1999)

FIG. 7c. 100 hottest 925-hPa temperatures (1980–1999)

Mean, median, and standard deviation

FIG. 8a. All times (1958–2000)

FIG. 8b. 100 coldest 925-hPa temperatures (1980–1999)

FIG. 8c. 100 hottest 925-hPa temperatures (1980–1999)