the scientific method: real examples monika v sikand ph.d student stevens institute of technology...
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The Scientific Method: Real examples
Monika V SikandPh.d Student
Stevens Institute of TechnologyDepartment of Physics
Light and Life LaboratoryHoboken.
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Overview
• Stevens light and life laboratory research
• Scientific methods review
• Application of scientific methods
• Conclusion
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Research at Light and Life Laboratory
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Research at Light and Life Laboratory
Remote sensing of ocean color.QuickTime™ and a
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The Scientific method steps
• Observation• Question• Hypothesis• Experiment• Data collection• Conclusion
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Observation
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Global Temperature
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Green house gases
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Melting ice
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Rising sea levels
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Hurricanes
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So what do we observe ?????
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Global Warming & Climate Change
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Do you have a problem or Question?
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Question ???????
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Think of an idea !!!!!!!!
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Let’s study the Earth’s radiation budget
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Radiation incident from Sun - radiation reflected from earth
Radiation budget
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Hypothesis: A scientific educated guess
If radiation budget increases then Globe is warming.
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Plan the experiment
Investigation !!!!!!!!!!!!!!!!
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Tethered Balloon system
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Ny-Alesund Svalbard, Norway (78.91N, 11.91E) in May/June 2008
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Data Collection
Quantitative(numerical) and Qualitative(descriptive)
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Quantitative dataEnergy (Mean Intensity)
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Qualitative dataCloud particles shape
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Analysis of results
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Cloud model
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presence of clouds influences the mean intensity.
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Results
The mixed phase clouds increases the mean intensity and hence the radiation budget.
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Conclusion
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Mixed phase(both ice and water)clouds increase the radiation budget in Arctic
If radiation budget increases then Globe is warming.
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Publication of results
“Optical properties of mixed phase boundary layer clouds observed from a tethered balloon platform in the Arctic” M.Sikand et al.
Journal of Quantitative Spectroscopy & Radiative Transfer 111 (2010) 1921–1930
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Interesting Links
http://climate.nasa.gov/kids/ClimateTimeMachine/climateTimeMachine_kids.cfm
http://climate.nasa.gov/kids/climateTales/index.cfm
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The End
Thank you