IPYNSTA Web Seminar:

1
LIVE INTERACTIVE LEARNING _at_ YOUR DESKTOP
IPY/NSTA Web Seminar Arctic and Antarctic
Living Systems
Thursday, December 20, 2007 630 p.m. - 800 p.m.
Eastern time
2
Agenda

• Introductions
• Tech-help info
• Web Seminar tools
• Presentation
• Evaluation
• Chat with the presenter

3
NSTA WS Staff
Supporting the Presenting Team is
Jeff LaymanTech Support, NSTAjlayman_at_nsta.org70
3-312-9384
For additional Tech-help call Elluminate
Support, 1-866-388-8674 (Option 2)
4
Elluminate Screenshot
Screenshot
5
NSTA WS Staff
We would like to know more about you
6
Poll 1
How many web seminars have you attended?

• 1-3
• 4-5
• More than 5
• More than 10
• This is my first web seminar

Use the letters A-E located at the top left of
your actual screen to answer the poll
7
Where are you now?
8
Poll 2
What grade level do you teach?

• Elementary School, K-5.
• Middle School, 6-8.
• High School, 9-12.
• I teach undergrad and/or grad students.
• I am an Informal Educator.

9
LIVE INTERACTIVE LEARNING _at_ YOUR DESKTOP
IPY/NSTA Web Seminar Arctic and Antarctic
Living Systems
Thursday, December 20, 2007
10
POLAR AMPLIFICATION

• Earth 4,500,000,000 years
• 3,500,000,000 yrs atmosphere changing

11

• Green plants evolved from bacteria
• Plants put O2 into atmosphere

12
? CO2 gt 380 ppm
? CH3
? H2O
13
(No Transcript)
14
(No Transcript)
15
(No Transcript)
16

• Scales in space and time
• Weather local and day-to-day
• Climate regional to global - long term
• Human history 0.1 of earths history

17

• Summarizing
• What changed in earths
• atmosphere 3.5 billion years ago?
• What organisms were responsible?
• What changed in earths atmosphere
• 100 - 150 years ago?
• What organisms were responsible?

18
Lets Pause for Two Questions
19
(No Transcript)
20
(No Transcript)
21
(No Transcript)
22
(No Transcript)
23
(No Transcript)
24
(No Transcript)
25
(No Transcript)
26
(No Transcript)
27
(No Transcript)
28
(No Transcript)
29
Climate models predict further warming in this
century but, how much? Take a guessbefore I
tell you
30
(No Transcript)
31
Albedo reflectivity of a surface. Snow on sea
ice reflects 80 90 of the suns energy. Sea
water reflects only 10. Atmospheric
warming melts ice decreases albedo warms
ocean melts more ice further decreases albedo
32
Annual maximal ice extent 15,000,000 km2
SIBERIA
ALASKA
March
1980
GREENLAND
33
Annual minimal ice extent 7,000,000 km2
SIBERIA
ALASKA
Sept.
1980
GREENLAND
34
-27 of 1979 1990 average
SIBERIA
ALASKA
Sept.
2005
GREENLAND
35
-23 of 2005 minimum!
SIBERIA
ALASKA
Sept.
2007
GREENLAND
36
Why do I refer to decreasing albedo as ice melts
as positive feedback? Where else on earth
might we see much the same process and effects?
37
Lets Pause for Two Questions
38
(No Transcript)
39
Krill?, amphipods?
arctic cod
amphipod
black guillemot
copepod
40
harp seal
bearded seal
ribbon seal
walrus
spotted seal
ringed seal
hooded seal
41
(No Transcript)
42
(No Transcript)
43
Plants changed climate by adding O2 Absent GHGs,
earth frozen Humans warming climate by adding
CO2, CH3, H2O Melting snow ice decreases albedo
positive feedback to warming Loss of summer ice
this century will radically change sea ice
ecosystem Rapid environmental changes in the
past lead to many extinctions
44
NASA logo
Thanks to our presenter, Dr. Brendan Kelly, and
to NSF, NASA, NOAA
45
Elluminate logo
http//www.elluminate.com
46
NLC screenshot
http//learningcenter.nsta.org
47
National Science Teachers Association Gerry
Wheeler, Executive Director Frank Owens,
Associate Executive Director Conferences and
Programs Al Byers, Assistant Executive Director
e-Learning
NSTA Web Seminars Flavio Mendez,
Director Danielle Troiano, Project
Coordinator Jeff Layman, Technical Coordinator
LIVE INTERACTIVE LEARNING _at_ YOUR DESKTOP
48

• NSDL Discover Microbial Worlds
• January 8, 2008
• NASA JPL How Science REALLY Gets Done
• January 10, 2008

http//learningcenter.nsta.org
49
Close recording First
Web Seminar Evaluation
Click on the URL located on the Chat Window