DO NOW! 2/14 (A) & 2/18 (B)

• Use a colored pencil or highlighter to highlight your Unit 3 Vocabulary List because the following words are introduced today:weathermeteorologistclimateclimatologist

• Open your textbook to page E-10• Make a SJ entry for Graphs Local Weather

Date: 2/14 (A) and 2/18 (B)Outcome: Students will gather data for various weather conditions and compare to historical data for that area.Question: How does weather vary from day to day or month to month for precipitation and temperature?

Activities:DO NOW! Vocabulary, Textbook page E-10 and SJ entryRead Intro to E51 on page E-10Read Intro to E53 on page E-18Copy data tables for Boulder County 2013Graphing Checklist = Classroom Reference

Homework: Complete 2 graphs ~1. Boulder County Monthly Total Precipitation for 2013 (Bar Graph)2. Boulder County Monthly Mean Temperature for 2013 (Line Graph)

What county do you live in? What county is Altona Middle School in?

Weather

• The condition of the atmosphere at a particular time and place.

• Described and measured by temperature, precipitation and wind speed.

Boulder County Monthly Total Precipitation 2013Month Precipitation

(inches)January 0.27

February 1.13

March 1.72

April 4.14

May 2.66

June 0.61

July 1.03

August 1.40

September 18.16

October 2.24

November 0.29

December 0.50

Boulder County Monthly Mean Temperatures 2013

Month Temperature (degrees Fahrenheit)

January 33.0

February 32.1

March 40.5

April 43.8

May 57.7

June 69.9

July 72.2

August 72.2

September 65.1

October 47.8

November 43.2

December 31.5

Climate• The long-term (usually at least 30 years) weather average for a

particular area. • There are several systems for classifying climates. • Koppen system, named after its original creator, Wladimir

Koppen (1846 – 1940) now includes six major climate categories based on average annual and monthly temperatures and precipitation.

• Tropical, dry, mild, severe, polar and highland, is identified by a letter from A to E and H.

• These categories are further subdivided and may be identified by variations in precipitation ( 4 lowercase letters) and temperature (additional 6 lowercase letters)

Boulder and Longmont Compared – average daily highs and lows in degrees Fahrenheit (1947 – 1987)

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec0

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Boulder Highs Boulder LowsLongmont HighsLongmont Lows

Cushman, Ruth Carol, Stephen R. Jones, and Jim Knopf. Boulder County Nature Almanac: What to See, Where and When. Boulder, CO: Pruett Pub., 1993. Print.

"Boulder Colorado Monthly Precipitation 1893-present." NOAA Earth System Research Laboratory. U.S. Department of Commerce. Web. 01 Feb. 2012. <http://www.esrl.noaa.gov/psd/boulder/Boulder.mm.precip.html>.

A low standard deviation indicates that the data points tend to be very close to the mean, whereas high standard deviation indicates that the data points are spread out over a large range of values.

"Boulder, Colorado Climate and Weather Data." NOAA Earth System Research Laboratory. 8 Dec. 1997. Web. 01 Feb. 2012. <http://www.esrl.noaa.gov/psd/boulder/index.html>.

http:/www.flickr.com/photos/molas/106664186/sizes/o/in/photostream//

http://www.wrcc.dri.edu/narratives/COLORADO.htm

Additional Colorado climate info.