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INSTRUCTIONS SLIDE

INSTRUCTIONS SLIDE. 1. Welcome. This is a template to create an Instructional Design Document of the concept you have selected for creating animation. This will take you through a 5 section process to provide the necessary details to the animator before starting the animation.

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INSTRUCTIONS SLIDE

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  1. INSTRUCTIONS SLIDE 1 Welcome This is a template to create an Instructional Design Document of the concept you have selected for creating animation. This will take you through a 5 section process to provide the necessary details to the animator before starting the animation. The legend on the left will indicate the current status of the document. The Black coloured number will denote the current section, the Turquoise color would denote the completed sections, and the Sky blue color would denote the remaining sections. The slides having 'Instructions' would have a Yellow box, as shown on the top of this slide. 2 3 4 5

  2. Variation of stability of atmosphere with time of day and its effect on air pollutants Chitra P. Murali and Professor Rashmi S. Patil

  3. Definitions and Keywords 1 • Stability describes the atmosphere’s ability to determine the vertical motion of pollutants • Atmospheric stability is defined by lapse rates which gives the rate of decrease of temperature with height • Environmental Lapse Rate (ELR) : rate of temperature decrease with height in the atmosphere at a given time and location 2 3 4 5

  4. Adiabatic Lapse Rate (ALR) : rate of temperature decrease with height for a parcel of air rising under adiabatic conditions • ALR is a universal constant : (-1)ºC /100 m • Stability is determined by comparing the environmental lapse rate with the adiabatic lapse rate • Air pollutants can be assumed as an air parcel or plume

  5. When … Atmosphere is… ELR > ALR Unstable ELR = ALR Neutral ELR < ALR Stable • An air parcel is displaced vertically from A to B. Three conditions may happen: • Stable : At B, air parcel is at lower temperature than surrounding environment. So parcel goes back to its original position. • Unstable : At B, air parcel at higher temperature than surrounding environment. So parcel keeps going up (i.e. above B) • Neutral : At B, air parcel and environment at the same temperature. Hence any existing vertical motion for the air parcel is neither damped nor accelerated

  6. Temperature Inversion : When temperature increases with height • A temperature inversion is an extremely stable condition of atmosphere • Impact on Air Quality • There is little vertical mixing when air is stable and air quality tends to be worse when stable conditions exist • Air is stable mostly at night(radiation temperature inversion) when the cooling of the Earth’s surface decreases the ELR • Air is typically neutral for periods in the morning and evening

  7. Air is most often unstable in the afternoon when solar radiation is absorbed by the Earth’s surface and the ELR is greater than ALR. • Air quality is usually best when air is unstable due to good vertical mixing of pollutants

  8. INSTRUCTIONS SLIDE Concept details: 1 2 • In this section, provide the stepwise detailed explanation of the concept. • Please fill in the steps of the explanation of the concepts in the table format available in the slides to follow (see the sample below). • Resize the table dimensions as per your requirements. 3 4 5

  9. Step No. Details of the step Text to be displayed Action/ Motion in the step 1 Unstable atmosphere ELR > ALR Hence unstable First indicate the ELR line indicating surrounding environment. Then show ALR. Concept details 1 2 3 Image to be displayed 4 5

  10. 2 Stable atmosphere ELR < ALR Hence stable First indicate the ELR line indicating surrounding environment. Then show ALR. Image to be displayed

  11. 3 Neutral atmosphere ELR = ALR Hence neutral First indicate the ELR line indicating surrounding environment. Then show ALR on ELR. Image to be displayed

  12. 4 Temperature Inversion Temperature of surroundings increase with height. First indicate the ELR line indicating surrounding environment. Then show ALR. Image to be displayed

  13. INSTRUCTIONS SLIDE 1 Interactivityand Boundary limits expected in the animation • In this section provide, interactivity options for all the parameters/components of the concept. • For example: • Numerical values to change the state of the component: By providing input boxes • Drag and drop of components: To test the comprehension of the users • Movement of objects: To explain the action of the components • Provide the boundary limits of the parameters, which will enable correctness of the results of the experiment. 2 3 4 5 gas

  14. Interactivity option number Details of interactivity Text to be displayed 1 First indicate the stability of the atmosphere as per the graph. Red line: ALR and Yellow line : ELR. This is stable condition. Then show the pattern of plume dispersion. Fanning plume with very low dispersion when atmosphere is stable. Interactivityand Boundary limits 1 Consider a plume being released from a chimney. Displayed are the ways in which it disperses. It is controlled entirely by the stability of the atmosphere. 2 3 4 Image (Don’t show notations like gamma)‏ 5

  15. Interactivity option number Details of interactivity Text to be displayed 2 First indicate the stability of the atmosphere as per the graph. Red line: ALR and Yellow line : ELR. This is unstable condition. Then show the pattern of plume dispersion. Looping plume with high dispersion when atmosphere is unstable. Image (Don’t show notations like gamma)‏

  16. Interactivity option number Details of interactivity Text to be displayed 3 First indicate the stability of the atmosphere as per the graph. Red line: ALR and Yellow line : ELR. This is neutral condition. Then show the pattern of plume dispersion. Coning plume when atmosphere is neutral. Dispersion only due to existing environmental forces like wind and buoyancy. Image (Don’t show notations like gamma)‏

  17. Interactivity option number Details of interactivity Text to be displayed 4 First indicate the stability of the atmosphere as per the graph. Red line: ALR and Yellow line : ELR. This is inversion condition. Then show the pattern of plume dispersion. Fumigation when there is temperature inversion. At the region where inversion starts (i.e. from the grey horizontal line), the atmosphere acts as a lid, forcing the pollutants downwards. Occurs especially in early winter mornings, when most of the air pollution disasters have occured Image (Don’t show notations like gamma)‏

  18. INSTRUCTIONS SLIDE 1 Questionnaire to test the user • A small, (5 questions) questionnaire can be created in the next slide, to test the user's comprehension. • This can be an objective type questionnaire. • It can also be an exercise, based on the concept taught in this animation. 2 3 4 5

  19. Questionnaire 1 1. The value of ALR is Answers: a) (-10)ºC per 1km b) (-1)ºC per 10m c) (-1)ºC per 1km d) (-1)ºC per 1m 2. ELR< ALR indicates that atmosphere is Answers: a) stable b) unstable c) neutral d) in temperature inversion 2 3 4 5

  20. 3. Air quality is best when air is Answers: a) stable b) unstable c) neutral d)‏ in inversion 4. Neutral conditions result in which type of plume? Answers: a) fanning b) coning c) fumigation d)‏ looping 5. Inversion results in which type of plume? Answers: a) fanning b) coning c) fumigation d)‏ looping

  21. INSTRUCTIONS SLIDE Links for further reading 1 • In the subsequent slide, you can provide links, which can be relevant for the user to understand the concept further. • Add more slides in necessary 2 3 4 5

  22. Links for further reading 1 http://data.piercecollege.edu/weather/stability.html 2 http://en.wikipedia.org/wiki/Lapse_rate#Environmental_lapse_rate http://apollo.lsc.vsc.edu/classes/met130/notes/chapter18/plumes2.html 3 4 5

  23. Thank you

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