View the step-by-step solution to:


Can I have all the answer so that I can check my answers?Thanks.

Our Changing Environment: Climate and Ecosystems (GEOB 102) - Fall 2014 Department of Geography The University of British Columbia Lab 1 Energy and temperature Last name: First name: Student #: Lab session: Due date: September 26 x This lab must be handed in by printing this handout and filling in the spaces provided for each ques- tion. x Please clearly highlight your final answers to the questions. x Submit the printed and completed version of this lab during the Friday lecture, on Sep 26. x Please read the Lab 1 Background information file available in the Lab section of the Connect web- site to help you complete this assignment. Introduction and objectives In this lab you will apply the energy balance equation to understand each of its components and deter- mine if a system is gaining or losing energy. You will become familiar with the conditions day or night, evaporation or condensation, or the direction of heat fluxes that result in a specific combination of magnitudes of the energy balance components positive or negative radiative and heat fluxes. You will also apply the two radiation laws learned in class Stefan-Bolzmann and Wien’ s displacement to fully understand their purpose and importance. Many of the topics covered later in the course will be di- rectly related to the simple principles of the energy balance equation and radiation laws. Question 1 - Daily radiation budget . The table below gives the five terms of the radiation budget, measured at about 1.2 m above the surface at Vancouver in September. Table 1 . Radiation budget components at surface (1.2 m above ground) in Vancouver, in W m -2 Time of day K↓ [W m -2 ] K↑ [W m -2 ] L↓ [W m -2 ] L↑ [W m -2 ] Q* [W m -2 ] α 02:00 0 0 351 425 -74 06:00 158 326 428 29 10:00 754 128 358 476 14:00 753 128 373 524 474 18:00 155 26 391 518 2 22:00 0 0 464 -88 a) Calculate the missing values for K↑ , L↓ and Q* at 6:00, 22:00 and 10:00, respectively, and fill the answer in Table 1 . Use the space below to show your calculations. This study resource was shared via
Background image of page 1
- 2 - b) Complete the albedo ( α ) column in Table 1 using 3 decimals for each answer and use the space be- low to show how you calculated it for 6:00 and 14:00. c) In one short sentence, comment about the variability of albedo throughout the day. d) In a short sentence, explain why L↑ is larger than L↓ for all values in Table 1 (hint: make an infer- ence about the temperature difference between the ground and the atmosphere). Question 2 - Energy balance . The table below represents some energy balance component es- timations at five different locations, at specific times of the day, in the surface of the ground. Table 2 . Radiation budget components at surface (1.2 m above ground) in Vancouver, in W m -2 Site K* [W m -2 ] L* [W m -2 ] L h [W m -2 ] S h [W m -2 ] C h [W m -2 ] R n [W m -2 ] Water Day / night Cooling / warming 1 880 -125 -210 -148 -43 2 0 240 0 -195 -45 3 280 345 -220 90 -18 4 0 -180 150 -40 29 5 120 -312 40 0 45 a) Fill the R n [W m -2 ] column of Table 2 and show your sample calculations for site 1 and 2 only in the space below. b) In the Water column of Table 2 , for each site, fill with an E if the water is evaporating, C if the water is condensing, and a big dash ( ) if there is likely no water in the system. c) Fill the column Day / night with a D if the measurements for each site were taken during the day, or N if they were taken during the night. d) In the Cooling / warming column of Table 2 , for each site, fill with a C if the surface is likely cooling, W if the surface is likely warming, and a big dash ( ) if there is no potential tempera- ture change. This study resource was shared via
Background image of page 2
Show entire document

Top Answer

View the full answer

Sign up to view the full answer

Why Join Course Hero?

Course Hero has all the homework and study help you need to succeed! We’ve got course-specific notes, study guides, and practice tests along with expert tutors.


Educational Resources
  • -

    Study Documents

    Find the best study resources around, tagged to your specific courses. Share your own to gain free Course Hero access.

    Browse Documents
  • -

    Question & Answers

    Get one-on-one homework help from our expert tutors—available online 24/7. Ask your own questions or browse existing Q&A threads. Satisfaction guaranteed!

    Ask a Question
Ask a homework question - tutors are online