Solar Energy to Earth and the Seasons. Monitoring the Climate System Electromagnetic Spectrum Radiation Laws Greenhouse Effect Seasonality Solar Elevation at Noon For Wednesday: Read Christopherson Ch. 3 available on AsUlearn.
July 15 to July 31, 2014
GHY 4530/5530: Andean Mountain Geography (3 hrs)
GHY 4531/5531: Climate and Tropical Glaciers (3 hrs)
This 17-day intensive program introduces students to AndeanMountain Geography and Climate and Tropical Glaciers through direct field experience and research activities, readings, discussions, and meetings with guest speakers. Field excursions to Machu Picchu and other locations in the Sacred Valley and an 8-day trek in the Cordillera Vilcanota (with strenuous ascents to over 17,000 ft) will provide an outstanding setting for the study of Andean human-environment interactions and the impacts of climate variability and change on tropical glaciers, ecosystems, and human populations.
Program Leaders: Dr. Baker Perry, Mrs. Patience Perry, and Dr. Anton Seimon
Interested? Contact Dr. Perry ([email protected]) to apply or for more information.
Visible Satellite Image
Infrared Satellite Image
Water Vapor Satellite Image
Wave Model of Electromagnetic Energy
The relationship between the wavelength, , and frequency, , of electromagnetic radiation is based on the following formula, where c is the speed of light:
Note that frequency, (nu), is inversely proportional to wavelength, (lambda).
The longer the wavelength, the lower the frequency, and vice-versa.
Stefan Boltzmann Law
The total emitted radiation (Ml) from a blackbody is proportional to the fourth power of its absolute temperature. This is known as the Stefan-Boltzmann lawand is expressed as:
where s is the Stefan-Boltzmann constant, 5.6697 x 10 -8 W m-2 K -4. Thus, the amount of energy emitted by an object such as the Sun or the Earth is a function of its temperature.
Wien’s Displacement Law
Responsible for considerable warming of Earth’s surface and lower atmosphere
Earth would be too cold without it to support most forms of plant and animal life
Atmospheric window: range of wavelengths over which little or no radiation is absorbed
Visible atmospheric window extends
from about 0.3 to 0.7 micrometers
Infrared atmospheric window from
about 8 to 13 micrometers