TYPICAL IMPACTS IN A POSITIVE PHASE INDIAN NEGATIVE … · southeast australia had its wettest year...
1
SOUTHEAST AUSTRALIA HAD ITS WETTEST YEAR ON RECORD AUSTRALIA HAD ITS 1982 THE IOD CAN IMPACT FROM WHEN DO THEY OCCUR? TYPICAL IMPACTS IN A POSITIVE PHASE TYPICAL IMPACTS IN A NEGATIVE PHASE INDIAN OCEAN DIPOLE IN AUSTRALIA LESS RAINFALL OVER CENTRAL AND SOUTHERN AUSTRALIA WARMER DAYS IN WEST AND SOUTH WARMER NIGHTS IN SOUTHWEST,COOLER IN NORTH SHORTER SNOW SEASON, LOWER SNOW DEPTHS INCREASED FIRE RISK IN SOUTHEAST MORE RAINFALL OVER EASTERN AND SOUTHERN AUSTRALIA COOLER DAYS IN SOUTH WARMER NIGHTS IN NORTH INCREASED CHANCE OF FLOODING MORE NORTHWEST CLOUD BANDS AND LAST FOR 2 7 MONTHS NEGATIVE PHASE MORE LIKELY TO COINCIDE WITH LA NIÑA POSITIVE PHASE MORE LIKELY TO COINCIDE WITH EL NIÑO The Indian Ocean Dipole is the difference in ocean temperatures between the west and east tropical Indian Ocean, that can shift moisture towards or away from Australia. DRIEST YEAR ON RECORD WHEN A POSITIVE IOD COINCIDED WITH EL NIÑO Average winter-spring rainfall Average winter-spring rainfall RED = DRIER THAN NORMAL BLUE = WETTER THAN NORMAL MAY TO DECEMBER WHEN A NEGATIVE IOD COINCIDED WITH LA NIÑA WHAT IS IT? THE IOD DOESN'T FORM DURING SUMMER DUE TO THE AUSTRALIAN MONSOON www.bom.gov.au
Transcript of TYPICAL IMPACTS IN A POSITIVE PHASE INDIAN NEGATIVE … · southeast australia had its wettest year...
SOUTHEAST AUSTRALIA HAD ITS
WETTEST YEAR ON RECORD
AUSTRALIAHAD ITS 1982
WHEN A POSITIVE IOD COINCIDED WITH EL NIÑO IN 1967 AUSTRALIA HAD ITS DRIEST SPRING ON RECORD
THE IOD CAN IMPACT FROM
WHEN DO THEY OCCUR?
TYPICAL IMPACTS IN A POSITIVE PHASE
TYPICAL IMPACTS IN A NEGATIVE PHASEINDIAN
OCEANDIPOLE
IN AUSTR AL IALESS RAINFALL OVER CENTRAL AND SOUTHERN AUSTRALIA
WARMER DAYS IN WEST AND SOUTH
WARMER NIGHTS IN SOUTHWEST,COOLER IN NORTH
SHORTER SNOW SEASON, LOWER SNOW DEPTHS
INCREASED FIRE RISK IN SOUTHEAST
MORE RAINFALL OVER EASTERN ANDSOUTHERN AUSTRALIA
COOLER DAYS IN SOUTH
WARMER NIGHTS IN NORTH
INCREASED CHANCE OF FLOODING
MORE NORTHWEST CLOUD BANDS
AND LAST FOR
2 7 MON
THS
NEGATIVE PHASE MORE LIKELY TO COINCIDE WITH LA NIÑA
POSITIVE PHASE MORE LIKELYTO COINCIDE WITH EL NIÑO
The Indian Ocean Dipole is the difference in ocean temperatures between the west and east tropical Indian Ocean, that can shift moisture towards or away from Australia.
DRIEST YEAR ON RECORD WHEN A POSITIVE IOD COINCIDED WITH EL NIÑO
Average winter-spring rainfall Average winter-spring rainfallRED = DRIER THAN NORMAL BLUE = WETTER THAN NORMAL
MAY TO DECEMBER WHEN A NEGATIVE IOD COINCIDEDWITH LA NIÑA
WHAT IS IT?
THE IOD DOESN'T FORM DURING SUMMER DUE TO THE AUSTRALIAN MONSOON
www.bom.gov.au
![SUPREME COURT OF SOUTH AUSTRALIA - WordPress.com · 09/09/2009 · On Appeal from DISTRICT COURT OF SOUTH AUSTRALIA (HER HONOUR JUDGE SHAW) [2008] SADC 33 Appellant: POSITIVE ENDEAVOUR](https://static.fdocuments.us/doc/165x107/5c67581609d3f226188b7ccb/supreme-court-of-south-australia-09092009-on-appeal-from-district-court.jpg)
