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Unit 23 jeopardy
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Where are the anomaly centers in NAO?
Where are the anomaly centers in NAO?
Greenland, North America between 35-40N
Recall the NAO interannual variability
Recall the NAO interannual variability
7 months, multi-decadal for wintertime NAO
How would you describe the positive NAO?
How would you describe the positive NAO?
Below normal high pressure at high latitudes, above normal heights at the East Coast, and in West Europe, changed location of the jet stream and storm track, above average temperatures in the eastern US, northern Europe, below normal temperatures in Greenland, south Europe and the middle East
Recall the typical variability.
Recall the typical variability.
multi-decadal
Recall what the East Atlantic pattern is.
Recall what the East Atlantic pattern is.
It's anorth-south anomaly, low frequency variability over the North Atlantic southward shifted NAO with a subtropical link. This pattern is distinctly different from the NAO.
How would you describe the temperature and precipitation pattern of the East Atlantic pattern?
How would you describe the temperature and precipitation pattern of the East Atlantic pattern?
Positive EA has above normal temperatures in Europe in all months, below normal temperatures in the southern US in January to May and in the coastal US in July to October, above normal precipitation in southern Europe
Recall what the positive phase of the Polar Eurasia means.
Recall what the positive phase of the Polar Eurasia means.
Neigative height anomaly over the polar region, positive anomaly over North China and Mongolia.
Recall what the positive Polar Eurasia means precipitation and temperature wise.
Recall what the positive Polar Eurasia means precipitation and temperature wise.
Mena temperatures are above normal is East Siberia, below normal in East China, and precipitation is above normal over the pole and Scandinavia.
Explain what causes the Polar Eurasia.
Explain what causes the Polar Eurasia.
Fluctuations in the circumpolar circulation. The positive phase means an enhanced vortex as compared to the normal.
Recall what PNA is.
Recall what PNA is.
PNA is a low frequency variability in the northerm hemispheric tropics.
Describe what the positivve phase PNA means temperature, and precipitation wise.
Describe what the positivve phase PNA means temperature, and precipitation wise.
Above average heights over the inter-mountain region of North America, below average heights over the Aleutian and southeastern US.
Recall how PNA is influenced by ENSO.
Recall how PNA is influenced by ENSO.
Positive PNA tends to occur with El Nino, negative with Pacific cold periods of La Nina.
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What Would You Like To Risk?
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Go To The Final Question
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