SNOW HYDROLOGY (GEOG 4321): HOMEWORK ASSIGNMENT 8

Instuctor: Mark Williams
Telephone: 492-8830

Homework 8

• Assigned  4 April.
• Due 8 April, 4 pm.
• There are 40 possible points.

1. Write the abstract for your paper, between 250 and 400 words. (20 points)
   • title
   • author
   • text
     • one to three sentences on your research topic and why it is so exciting.
     • one to three sentences on problem statement.
     • one to three sentences on current holes in our knowledge of these problems.
     • one to three sentences on your objectives.
     • three or four sentences on your methods, or the methods of others if you are doing a literature review.
   • include 3 references from journal articles (not books!)
   • remember it takes time to write something short and concise.
     
     
2. For each of the following sensors, provide the following information: swath width, pixel size, spectral bands, snowpack properties measured, advantages and limitations of the sensor with respect to measuring those snow properties. (10 points)
   
   
   • AVHRR
   • LANDSAT
   • AVIRIS
   
   
3. Calculate the CV as a fraction, Standard Error, CV as a percent of the mean, and Standard Error as a percent of the mean, for SWE and sulfate concentration collected as part of my PhD research at Emerald Lake in the Sierra, given (5 points):
   • SO4
     • mean = 2.9 ueq/L
     • N = 6 ueq/L
     • SD = 0.4 ueq/L
   • SWE
     • mean = 59.8 cm
     • N = 256
     • SD = 37.2 cm
   • Explain why SO4 concentrations have a similar standard error as SWE even though there were less samples collected for SO4 compared to SWE.
4. How many samples do you need to be within 10% of the mean at 0.05 significance, for density and SWE, given (5 points):
   • density
     • mean = 500 kg/m3
     • SD = 30 kg/m3
   • SWE
     • mean = 80 cm
     • SD = 60 cm