Water Temperature Protocol

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Water Temperature Protocol
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Goals for the Training Session

• Provide an inquiry context for the data
  collection and science content
• Provide accurate science content
• Review procedures for instrument calibration
• Review procedures for data collection
• Review data entry and analysis
• Discuss classroom implementation ideas
• Collect feedback from participants

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Inquiry Context

• How does water temperature compare to air
  temperature?
• How does a rain event or snow melt affect water
  temperature?
• How does the water temperature vary across
  seasons?
• How does water temperature relate to other water
  quality measurements?

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Local Inquiry Example
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Why do GLOBE scientists researchwater
temperature?

• To track the mixing of waters in estuaries and
  along coasts
• To help determine the evaporation rates
• To help determine what can live in water
• To determine the overturning of lakes

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Science Content

• Processes Affecting Water Temperature
• Sunlight or Shade
• Discharges of warmer or cooler water
• Reflected heat from land cover

• Processes Affected by an Increase in Water
  Temperature
• Increase in rates of chemical reactions
• Increase in respiration rates in organisms
• Increase in growth rates
• Decrease in solubility of gases

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Instruments Alcohol-Filled Thermometer
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The Measurements

• Thermometer Calibration
• Water Temperature
• Three separate measurements

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Collecting Data Field/Lab Guides Data Sheets

• Field/Lab Guides
• Calibrating the Hydrology Thermometer Field Guide
• Water Temperature Protocol Field Guide
• Optional
• Collecting a Water Sample in a Bucket Field Guide
• Data Sheets
• Hydrology Investigation Data Sheet

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Collecting Data Calibrating the Thermometer

• Stir together distilled water and crushed ice
• Let sit for 10-15 minutes
• Submerge thermometer in ice-water bath for three
  minutes, stir occassionally
• Thermometer should read between -0.5 C and 0.5
  C

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Collecting Data Protocol

• Lower thermometer 10 cm into water for 3-5
  minutes
• Read temperature at eye level, keeping bulb in
  water
• Thermometer should be in water for 1 minute
• Take two more measurements
• Average the three temperatures
• Check for accuracy

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Enter Data on the GLOBE Web Site
Step 1 Confirm that the Hydrology Study Site
definition is completed Step 2 Select Hydrology
Measurements from the Hydrology data entry
menu Step 3 Enter date/UT time/select site Step
4 Enter the water state and temperature
measurements Step 5 Confirm data entries on
verification page, especially the Average Water
Temperature
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Looking at the Data
N
Water Air Temperature Banyangsung,
Kanchanaburi, Thailand
E
S
W
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Classroom Implementation

• Inquiry
• Curriculum/Standards Alignment
• Assessment
• Classroom Management

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Getting Started

• The GLOBE Web site has information
• http//www.globe.gov
• GLOBE Help Desk is available to support you as
  you get started.
• Get your students involved doing real science!