Friday, May 9th, 2014

• Endangered: Leatherback sea turtle (Dermochelys coriacea)

• Kingdom: Animalia• Class: Reptilia• Order: Testudines• Family: Dermochelyidae• The leatherback is the largest, deepest diving,

& most migratory of all sea turtles. Adults can reach 4-8 ft & 500-2000lbs.

Do Now: May 9th

1. Describe what happens at a stationary front.

2. Compare & contrast cirrus & cumulus clouds.

3. You have plans to go surfing. Would you prefer a low pressure system or high pressure system? Explain why.

Do Now: May 9th

1. Describe a stationary front.– Wind/rain @ a stalled front – not moving

2. Compare/contrast cirrus & cumulus.– Cirrus: wispy, hair-like– Cumulus: fluffy, puffy, cotton– Both: fair weather clouds

3. You go surfing. Would you prefer a low or high pressure system? Explain why.

– High pressure system – pretty day– Low pressure system – winds = big waves

YouTube Friday

• http://www.youtube.com/watch?v=QbM-xf_ACYI

• http://www.youtube.com/watch?v=00IpNWoaXiw

• http://www.youtube.com/watch?v=zDyt0M8Zecw

Station Models

• Summary diagram of weather conditions @ a weather station

Station Models

Decoding Coded Pressure

196 Insert decimal point to left of last digit

19.6 Put a “9” and a “10” in front of result

919.6 1019.6Test results against range of normal atmospheric pressures

919.6 is below range of normal pressures…. REJECTED!

1019.6 is w/in range of normal pressures…. ACCEPTED!

Coded pressure 196= 1019.6 mb

Decode these coded pressures: 002 993 280 000

1000.2 999.3 1028.0 1000.0

Encoding the Pressure

1013.5 Remove decimal point

10135 Report last 3 digits

135

Pressure 1013.5 = 135 encoded pressure

Encode these pressures: 1032.7 987.3 1012.2 1000.1

327 873 122 001

The Barometric Trend+ 19 /

+ means “Higher now than it was 3 hrs ago”(- means “Lower now than it was 3 hrs ago”)

19 means pressure has changed by 1.9 mb

/ means pressure is currently rising( \ means pressure is currently falling)

What was the pressure 3 hours ago?

1017.7+1.9= 1019.6

1003.5-2.8= 1000.7

NE at 25 Knots E at 5 Knots SE at 10 Knots

Temperature= 45FDewpoint= 32FWind NE at 20 knotsOvercastVisibility= 1.5 milesRain ShowersPressure Now= 997.3 mbPressure 3 hrs. ago= 1000.2mbBarometer FallingPrecipitation in last 6 hrs.= .53 in.

Draw a Station Model for These Conditions:

Temperature= 45FDewpoint= 32FWind NE at 20 knotsOvercastVisibility= 1.5 milesRain ShowersPressure Now= 997.3 mbPressure 3 hrs. ago= 1000.2mbBarometer FallingPrecipitation in last 6 hrs.= .53 in.

Draw a Station Model for These Conditions:

Synoptic Weather Map

Example• Temperature: 50°F• Present Conditions: Snow• Barometric Pressure: 1002.4• Visibility: 2 miles• Cloud cover: 50%• Barometric Pressure Change: -1.5• Wind Direction: from the northeast• Wind Speed: 5 knots• Dew Point Temperature: 38°F

Example• Temperature: 50°F• Present Conditions: Snow• Barometric Pressure: 1002.4• Visibility: 2 miles• Cloud cover: 50%• Barometric Pressure Change: -1.5• Wind Direction: from the northeast• Wind Speed: 5 knots• Dew Point Temperature: 38°F