The Scientific Method: Real examples Monika V Sikand Ph.d Student Stevens Institute of Technology Department of Physics Light and Life Laboratory Hoboken.

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Presentation transcript:

The Scientific Method: Real examples Monika V Sikand Ph.d Student Stevens Institute of Technology Department of Physics Light and Life Laboratory Hoboken.

Overview Stevens light and life laboratory research Scientific methods review Application of scientific methods Conclusion

Research at Light and Life Laboratory / Use of satellite data for retrieval of atmospheric and surface properties.

Research at Light and Life Laboratory / Remote sensing of ocean color.

The Scientific method steps Observation Question Hypothesis Experiment Data collection Conclusion

Observation

Global Temperature

Green house gases

Melting ice

Rising sea levels

Hurricanes

So what do we observe ?????

Global Warming & Climate Change

Do you have a problem or Question?

Question ???????

Think of an idea !!!!!!!!

Let’s study the Earth’s radiation budget

Radiation incident from Sun - radiation reflected from earth Radiation budget

Hypothesis: A scientific educated guess If radiation budget increases then Globe is warming.

Plan the experiment Investigation !!!!!!!!!!!!!!!!

Tethered Balloon system Ny-Alesund Svalbard, Norway (78.91N, 11.91E) in May/June 2008

Data Collection Quantitative(numerical) and Qualitative(descriptive)

Quantitative data Energy (Mean Intensity)

Qualitative data Cloud particles shape

Analysis of results

Cloud model presence of clouds influences the mean intensity.

Results The mixed phase clouds increases the mean intensity and hence the radiation budget.

Conclusion

Mixed phase(both ice and water)clouds increase the radiation budget in Arctic If radiation budget increases then Globe is warming.

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

Interesting Links meMachine_kids.cfm

The End Thank you