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The Weather that Makes the Dots. TESSE 22 July 2008 Eric Kelsey Institute for the Study of Earth, Ocean and Space - UNH. Temperature Cycle over 7 Glacial Cycles. 600. Projected Concentration After 50 More Years of Unrestricted Fossil Fuel Burning. 500. 400. 300. 280. 260. 240.

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the weather that makes the dots

The Weather that Makes the Dots

TESSE 22 July 2008

Eric Kelsey

Institute for the Study of Earth, Ocean and Space - UNH

slide2

Temperature Cycle over 7 Glacial Cycles

600

Projected Concentration After 50 More Years of Unrestricted Fossil Fuel Burning

500

400

300

280

260

240

CO2 Concentration

CO2 [ppmv]

220

200

180

Temp. in F°

600,000

500,000

400,000

300,000

200,000

100,000

0

Age (yr BP)

slide3

Seasonal Temperature Cycle over 7 Years?

600

Projected Concentration After 50 More Years of Unrestricted Fossil Fuel Burning

500

400

Year 1 2 3 4 5 6 7

600,000

500,000

400,000

300,000

200,000

100,000

0

Age (yr BP)

slide4

Diurnal Temperature Cycle over 7 Days?

600

Projected Concentration After 50 More Years of Unrestricted Fossil Fuel Burning

500

400

Mon Tue Wed Thu Fri Sat Sun

600,000

500,000

400,000

300,000

200,000

100,000

0

Age (yr BP)

climate vs weather
climate-

Meteorological elements that characterize the average and extreme conditions of the atmosphere over a long period of time at any one place or region of the earth\'s surface.

(Environment Canada)

weather-

The state of the atmosphere with respect to heat or cold, wetness or dryness, calm or storm, clearness or cloudiness.

(Massachusetts Dept. of Education)

Climate vs Weather
fractals fronts
Fractals-fronts

cool

warm

Supercell Thunderstorm

cool

warm

Extratropical cyclone

supercell with small hook echo

Supercell in southeast NH July 18, 2008

Supercell with small hook-echo

Prompted issue of Tornado Warning for Durham

and surrounding towns

us water vapor imagery
US water vapor imagery

If above link doesn’t work you can get it here:

http://rap.ucar.edu/weather/satellite

cool air until it is saturated
Cool air until it is saturated

- also, radiative cooling until air reaches saturation: fog

common storm tracks
Common Storm Tracks

cold, dry

Alberta Clipper

Colorado (Lee) Low

moist

warm

Coastal Track

warm, moist

ocean lake effect snow
Ocean & Lake Effect Snow

Short-lived, localized events

nor easters coastal storms
Nor’easters, Coastal Storms

Energy gained from contrast between

cold-dry and warm-moist air masses

Blizzard of Feb. 2006

hurricanes
Hurricanes

Hurricane Bob 1991

enso tropical pacific sst
ENSO: Tropical Pacific SST

El Niño (Dec. 1997) La Niña (Dec. 2000)

http://www.elnino.noaa.gov/lanina.html

el nino southern oscillation tropical pacific sst
El Nino-Southern Oscillation: Tropical Pacific SST

http://www.cpc.ncep.noaa.gov/products/analysis_monitoring/ensocycle/meanrain.html

north atlantic oscillation
North Atlantic Oscillation

+Warmer and

less snow

Variability on

Order of

Weeks

-Colder and

more snow

fun facts
July:

warmest month

(ave high: 54F)

2nd driest month (8.02”)

Least snowiest: 1.1” most ever

3rd highest temp (71F)

2nd least windiest: 25.3mph ave.

Coldest month: January

(14F ave high)

Wettest: November (10.49” ave)

Snowiest: December (55” ave)

Coldest temp: -47F (Jan 1934)

Windiest: Jan 46.3mph

Fun Facts
helpful links
Helpful Links
  • Storm Prediction Center:

spc.noaa.gov

  • University Corporation for Atmospheric Research:

rap.ucar.edu/weather

  • National Weather Service

nws.noaa.gov

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