Sarah RoseSection 8Lab 7: The Earth’s Energy Budget and Radiation Group: Jeannie, Mike Lights On Lights OfPyranometerresponsePyrgeometerresponsePyranometerresponsePyrgeometerresponseHand Decrease Increase No Response IncreasedNo Hand Increase Increase No Response No ResponseDay 1 Feb. 23, 2013 Day 2 Feb. 24, 2013Noon 19:00 UTC Midnight 700 UTCNoon 19:00 UTCMidnight 700 UTCLongwave Radiations260 W/m^2 190 W/m^2 300 W/m^2 310 W/m^2Shortwave Radiation950 W/m^2 0 W/m^2 75 W/m^2 0 W/m^2Day 1 Feb. 23, 2013Day 2 Feb. 24, 2013Max Min Max MinCloud Height (m) 8000 0 750 0Time (mtn) 01:00 23:53 23:45 10:00Question 1The pyrgeometer responded to the hand because the hand emitted long wave radiation. Because temperature and wave length are inversely related the warmer the hand the shorter the wavelength. The pyrgeometer measures wavelengths from about 4um to 40um. Question 2The pyranometer responded to the light because the pyranometer only responds to short wave length radiation and that’s the spectrum light is in. Light can emit both long and short wave radiation because the pygeometer responded to it (because the light warmed with instrument). Question 3During the hours of the day the sun was in the sky and it is light out there is visible or shortwave radiation. During the evening and into the night when the sun is setting as this light decrease so does the radiation. During the night it is completely absent. It is highest in late afternoon when the sun is most intense and directly perpendicular to the Earth’s surface and there is the least flux. A typical 24 hour period looks like this: in the early morning to late afternoon the radiation steadily increases then from later afternoon to evening the radiation steadily decreases until it is absent. Question 4The relationship between long wave radiation and time of day is unclear. On the 23rd it was warmer at noon (260 W/m^2) and then dropped to 190 W/m^2 at midnight. On the 24th it was 300 W/m^2 at noon and then increased to 310 W/m^2 at midnight. There’s not enough information or any apparent patterns to declare any trends for long wave radiation. One day 1 when the pygeometer recorded higher temperature the pyranometer recorded higher amounts of visible sunlight. But on day 2 when it was 40 W/m^2 warmer out the shortwave radiation had a lower reading of only 70 W/m^2 at noon.Judging by this data it would seem the warmer it is the less shortwave radiation is present. Summary & Conclusion The purpose of this lab was to understand the difference between shortwave and long wave radiation and the different roles they play in the temperature of the atmosphere. We did this by measuring the different lengths of radiation with two instruments the Pyranometer and the Pyrgeometer. We also looked at the relationship of the amount and type of radiation throughout the day. Potential errors in this lab could have come from incorrectly reading the data.For example we were suppose to look at the amount of radiation at noon and midnight on the graphs but there were two recorded midnights on the graphs since it was a complete 24 hour measurement. So there was potential to be reading information from the wrong day. Our results seemed consistent with Wein’s law because the values were inversely related. This lab defiantly makes the distinction between the function of longwave and short wave radiation. Now on days that a extremely sunny I know that there is a lot of shortwave radiation present meaning there is and inversely proportional amount of longwave