atmo324-07-asmt5 - this compare with the rate of deep-water...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
ATMO 324: Problem Set 5 ( due Nov. 28 ) Chapters 8 & 11: History of Earth’s Climate and Natural Climate Change 1. (Hartman 8.1) Discuss the difficulties with interpreting a curve like Fig. 8.1 or extrapolating it into the future. 2. (Hartman 8.2) One of the earliest examples of primitive humans, Australopithecus , lived in Africa between about 4 and 1 million years ago. Hominids began using stone tools about 2 million years ago. Place Australopithecus and tool use in their proper place in Fig. 8.4. For what fraction of Earth history have hominids been around? 3. (Hartman 8.6) Estimate the rate of freshwater mass production (kg s -1 ) by the melting of the North American ice sheet, assuming that its melting took 500 years. (Use Fig. 8.8 to obtain the mass of North American ice sheet during the last ice age.) How does
Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: this compare with the rate of deep-water formation in the North Atlantic, which is estimated to be about 2 x 10 10 kg s-1 at present? 4. (Hartman 11.1) Show that if the planetary albedo is 0.3, a change in solar constant of 1 W m-2 results in a global-mean climate forcing of 0.175 W m-2. 5. (Hartman 11.2) The current magnitude of the greenhouse effect is measured by the difference between the emission from the surface and the emission from the top of the atmosphere, G = " T s 4 # T e 4 $ 150 W m-2 . What would be the required magnitude of the greenhouse effect to maintain the surface temperature at 288 K if the solar constant were reduced by 30%? By what distance would the effective emission level of the atmosphere need to rise if the lapse rate is approximately 6 K km-1 ?...
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern