METEO 003 Lab 10 due Nov 21

Albedo Review reflectivity of a surface (sunlight) What geographical features can be seen on visible image? Look at Figure Question 1a,b

Albedo Review Might be easier to tell where there is clear sky on infrared image in this case. What geographical features can be seen on infrared image, if any? Could they be seen if it’s cloudy? Look at Figure Question 1a,b

Precipitation Types Rain – Precipitation in the form of liquid water drops Snow – Precipitation comprised of white ice crystals, primarily in complex branch hexagonal form Freezing Rain – Rain that falls in liquid form but freezes upon impact Sleet – A type of precipitation consisting of transparent pellets of ice Question 3

Precipitation Types Question 3

Lake Effect Data Analysis General rule: the shallower the lake, the sooner it will freeze Interpret the graphs/tables, they contain all the answers *No calculation needed for part a Question 6a,b,c,d

Map Analysis Lapse rate = change in temperature change in height Surface air temperatures (over water) will be similar to (assume the same as) surface water temperatures Remember surface winds cross isobars at about a 30 degree angle towards lower pressure Look at Figure Question 7a,b,c

Air Mass Types Continental: dry Maritime: moist Polar: cold/cool Tropical: hot/warm Combinations: mT, mP, cT, cP Question 8a,b,c,e

Wind Orientation and Lake Effect Wind direction parallel to major lake axis = single major band of lake effect snow Wind direction perpendicular to major lake axis = multiple discrete bands of lake effect snow Question 8a,b,c,e

Temperature Anomalies Positive: warmer than average Negative: colder than average Question 9a,b

Wind Chill The perceived decrease in air temperature felt by the body on exposed skin due to the flow of air Increased winds speed, decreased temperature, or a combination of both = lower wind chill and less time needed for frostbite Question 11a

Lab 10 due Nov 21 Chapter 16 – 1a,b – 3 – know precipitation types and conditions needed for each – 6a,b,c,d – shallow lakes freeze earlier – 7a,b,c – convert K to C for surface temp – 8a,b,c,e – not as much friction over lake – 9a,b – 11a