Textbook: Meteorology Understanding the Atmosphere 2 nd Edition Ackerman & Knox Prof. Steve Ackerman University of Wisconsin 2009 Teaching Excellence Award American Meteorological Society your topics of interest in ATSC 2000 topics I propose we cover in this course
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Understanding the Atmosphere
Ackerman & Knox
Prof. Steve Ackerman
University of Wisconsin
2009 Teaching Excellence Award
American Meteorological Society
and of course Chapter 1) Introduction
1.1 Weather vs climate
1.2 Atmospheric composition
1.3 Atmospheric structure
more weather links
8/28/05 17 UTC
Scotland in March
Off Labrador in March
That’s 4 degrees below the average high for this time of the year.Which one is a statement about weather, which one about climate?
Click here for the current Laramie weather forecast
from 3-monthly to daily precip
The atmosphere, like any other fluid, behaves chaotically
Edward Lorenz, 1963: Deterministic nonperiodic flow. Journal of Atmospheric Sciences. Vol.20 : 130—141.
Edward Lorenz in Wikipedia
last 150,000 years
last 1,000 years
US temperature trend 1941-2005
winter precipitation anomaly
sea surface temperature
An El Niño is predicted for next winter …
Conclusion: there is some limited guidance for the season ahead, but wrong predictions should not be a surprise.
Key atmospheric observations
360 ppm 2100
The long-term rise in CO 2100 2 levels parallels fossil fuel use.
Discussion 2100 : our atmosphere is key to the habitability of the Earth. Are we alone in that regard, or do other planets have an atmosphere as well ?
Mars Earth Venus 2100
radiosonde balloon 2100
real-time soundings plotted
Space Shuttle Discovery
O 2100 3
“Good”: Stratospheric ozone, which screens out much of the incident UV radiation from the sun.
“Bad”: Tropospheric ozone, an anthropo-genic air pollutant , damages health and the environment.“Good” vs. “Bad” Ozone
Montreal protocol (1987): complete phase-out of CFC production
UV radiation penetrating to the Earth surface the incident UV radiation from the sun.
Laramie (2.2 km)
(skin cancer, eye cataracts ...)
O the incident UV radiation from the sun.3
sea level pressure (mb)
wind direction and speed
Weather symbols the incident UV radiation from the sun.
Cloud cover the incident UV radiation from the sun.
If reported value greater than 500:
Initial 9 is missing. Place it on left, then divide by 10.
For example: 827 becomes 982.7 mb.
If reported value less than 500:
Initial 10 is missing. Place it on left, then divide by 10.
For example: 027 becomes 1002.7 mb.
speed the incident UV radiation from the sun.wind
1 Knot = 1.15 MPH
- to be revisited