EN SC 1406-Earth S Environmental Systems (Assignment #1) Page 3 of 3 Table 1. Ty
ID: 294937 • Letter: E
Question
EN SC 1406-Earth S Environmental Systems (Assignment #1) Page 3 of 3 Table 1. Typical earth surface reflectivity values. Surface Conditions low overcast, 200m thick smooth, solar angle 60° wavy. solar angle 60° smooth, solar angle 20° fresh, low densit old. clcan Reflectivity 0.50 0.05 water water water snow snow icc san 0.35 0.85 0.55 0.35 0.35 0.30 lacier. clean organic, dark ical fields 0.20 0.25 cro forest forest forest cereals, tobacco red pine mixed hardwoods, in leaf rain forest Table 2. Radiation and energy fluxes values at a site located at 49° N latitude (late spring season). iime hours WmWmWm Wm Wm 0100 0200 0300 0400 0 0500 -62 -86 12 154 199 0 425 339 430 326 428 363 451 128 358476 365 506 128 358476 383 527 14 0600 158 27 0800 521 1000 754 0700 132 224 85 326 97 322 229 0900 1100 1200886 1300 1400753 1500 160052289 1700 1800 1900 2000 0 2100 2200 0 2300 2400 0 391 390 496 376 464 358431 -80 118 -105 -68 *note that for shortwave and longwave radiation, arrows denote direction relative to the earth's surface; for non-radiative fluxes signs are used to indicate flow toward (negative) or away from (positive) the surface (opposite to Q which they must balance)Explanation / Answer
1. Put the value in given equation and calculate Q*, plot it in the graph paper. X-axis will be time axis and Y-axis will be flux.
2. Longwave and shortwave basically are electromagnetic radiation of different in wavelength. If the wavelength is smaller in size ( UV, visible) we call it shortwave while if the length of wavelength is large (like radio wave) we call it longer wavelength. Usually, the sun emits shorter wavelengths because of the extremely hot environment, but earth radiates it back in the form of longer wavelength of typically lower in temperature compare to incoming one.
X-ray range -0.01-10nm
UV range- 10nm-400nm
visible range- 400-700 nm
infrared range- 700 nm-1mm
microwave range-1mm-1m
radio wave range- 1m-100 km
#Kindly refer to electromagnetic spectrum chart for better understanding.
3. Emission: It is a spectrum of an electromagnetic radiation by a source. (eg. UV emission from the Sun, the emission spectrum of a chemical compound, etc.)
Reflection: the reflection of em wave from the surface. It follows the law of reflection as well. (eg. reflection of incoming radiation by clouds in the atmosphere, reflection of visible light the in mirror, etc.)
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