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2017 swcs weather observers presentation
1. USING โWEATHERโ TO DISCUSS
โCLIMATEโ- THE WEATHER OBSERVERS
PROGRAM
Duane Friend
University of Illinois Extension
2. MOST PEOPLE CARE ABOUT
CLIMATE CHANGE BUT
DONโT WANT TO TALK
ABOUT IT
โข Confirmation bias- Already strong beliefs
โข Theory of Persuasion- People take cues from how good
they think the source is
โข Cognitive Dissonance- If shown previous beliefs may not
be correct, it is taken as a personal insult
http://www.ecology.com/2013/01/07/why-doesnt-public-respond-to-climate-change/
4. WHAT IS COVERED
โข Why we have seasons
โข The Composition of the Atmosphere
โข Heat and Temperature
5. WHAT IS COVERED
โข Air Pressure and Winds (Why does most of our storms
come from the west?)
โข Clouds and Precipitation (What do different clouds mean
for future weather?)
โข Climate and Weather (How do scientists predict future
climate, and which predictions will directly affect me?)
6. SUNLIGHT TRAVELS AS A
WAVE
โข There is an infinite range of
wavelengths of sunlight (solar energy).
โข The human eye only can detect a small
range of this energy- the visible
spectrum.
9. Majority of Sunlight Reaching Earthโs
Surface is in the Visible Spectrum
Incoming Outgoing
Courtesy NASA
10. GREENHOUSE GASES
โข Gases like carbon dioxide, methane, and
nitrous oxides have the ability to absorb
heat that is trying to escape into space.
โข The heat is released by the gases, but a
lot of it is sent back towards earth
instead of heading out to space.
11. WHEN THE HEAT IS
RELEASED, IT GOES OUT IN
ALL DIRECTIONS
12. WHAT HAPPENS IF
GREENHOUSE GASES
INCREASE?
โข Increases of Greenhouse gases have
increased the Greenhouse effect, leading
to warming of the lower atmosphere.
โข Cause and Effect- weโll talk about this
more when we discuss Climate
Changeโฆโฆ
21. "OUR WORK SUGGESTS THAT RIVER CHANNELS MAY SET
THE SPEED LIMIT ON EROSION," SAID DOUGLAS J.
JEROLMACK, ASSOCIATE PROFESSOR IN PENN'S
DEPARTMENT OF EARTH AND ENVIRONMENTAL SCIENCE
IN THE SCHOOL OF ARTS & SCIENCES. "WE SHOWED THAT
THE FORCES OF THE BIGGEST FLOOD EVENTS WERE
REALLY ONLY INCREMENTALLY LARGER THAN THE
MODERATE EVENTS BECAUSE RIVER CHANNELS ADJUST
THEIR SIZE TO BE CLOSE TO THE SO-CALLED 'THRESHOLD
OF MOTION,
READ MORE AT: HTTPS://PHYS.ORG/NEWS/2016-05-EXTREME-RAINFALL-
DOESNT-EROSION.HTML#JCP
22. PROJECTED CHANGES IN KEY CLIMATE VARIABLES
AFFECTING AGRICULTURAL PRODUCTIVITY-
CHANGE IN NUMBER OF CONSECUTIVE DRY DAYS
http://nca2014.globalchange.gov/report/sectors/agriculture
23. INCREASED NEED FOR RISK
MANAGEMENT OPTIONS TO
REDUCE EROSION SUCH AS
COVER CROPS
24. HAS THIS COURSE CHANGED
YOUR BELIEFS IN CLIMATE
CHANGE?
โข Yes, it is much more imminent to address. I thought it was a
political battle.
โข Very much so-
โข Yes. I knew very little about climate change before, and
(now) I have confidence in knowing what I am explaining to
others.
โข No (??)
Editor's Notes
Map: Difference in precipitation (%) between 1991-2011 and 1901-1960. Most areas have experienced wetter conditions.
Graphs: Average precipitation differences from the 1901-1960 average by decade for each region. The far right bar is for the single year of 2011. The number above each graph is the average precipitation change for 1991-2011 compared to the historical base period of 1901-1960.
Annual precipitation has exhibited a general upward trend since the early 20th Century. It was wetter than normal during the 1990s, drier than normal during the early 2000s, and generally wetter than normal during the last few years. The wettest single year on record was 1973.
Observed increase in 1 year, 5 year, and 20 year storme vents (this is based on 2 day precip.). What was the 1 in 20 year event in the Midwest 30 years ago is now the 1 in 13 year event.