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Data and Satellite Imagery - Data Description
Stumpf and Pennock (1989). In the included processed imagery, the reflected light emerging from the water column ranges from 0 to 12 percent. The reflectance ... shown that 5 percent reflectance corresponds to a sediment concentration of approximately 130 milligrams/liter (Walker, 1996). The relationship is not linear, so that a reflectance of 2.5 percent was ...
www.csc.noaa.gov

Data and Satellite Imagery - Imagery Metadata
Supplemental_Information: These images were created with the USGS/NOAA program AVHRRMAP8. A scene specific image offset was subtracted from each daily reflectance image to ... . The percent reflectance is scaled as Reflectance (%) = (DN - 1)/20. For example, DN = 201 represents 28.5 degC for a SST image or 10.0% for a reflectance image. Entity_and_Attribute_Detail_Citation ...
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Cambridge City Hall Annex
Minimized heat absorption: the Energy Star rated roof is coated with a high reflectance/low emissivity material to minimize heat absorption, which will lower the demand for cooling in ... and ceiling all contain high levels of recycled content. Carpeting consists of 25 percent recycled material, and is 100 percent recyclable at the end of its life. Manufacturer guarantees it will not ...
oikos.com

ESB: Choose Glazing by the Numbers
Reflective glass would be anything below about 20 percent VLT. For most residential applications, VLT should be between 40 and 70 percent. Reflectance describes how much visible light is reflected back toward the source. The numbers are listed for inside, outside or both. To avoid the "mirrored" look keep outside reflectance ...
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Frequently Asked Questions About Cool Roofs
Combining these maintenance savings with an average 20 percent savings on air conditioning costs make cool roofing a better bargain over the long term ... Title 24. Refer to Section 10-113 for information on certification and labeling requirements for reflectance and emittance of cool roof products. For the prescriptive compliance approach in the energy efficiency ...
consumerenergycenter.org

The Efficient Windows Collaborative: Resources
Rail. Horizontal member of a window sash. Reflectance. The ratio of reflected radiant energy to incident radiant energy. Reflective glass. Window glass coated ... to the amount of moisture the air could hold at that given temperature. At 100 percent relative humidity, moisture condenses and falls as rain. Retrofitting. Adding or replacing items on existing ...
efficientwindows.org

FAQ - About Radiant Barriers for New and Existing Homes
A closely related material property is the "reflectivity" (also called the "reflectance"). This is a measure of how much radiant heat is reflected by a material. The ... 0.03 to 0.05. Hence they will have a reflectivity of 95 to 97 percent. Some materials may have higher emissivities. It is not always possible to judge the emissivity ...
flasolar.com

Welcome to the New Jersey Astronomical Association
Glare - The sensation produced by luminance within the visual field that ... b). Other upward directed architectural, landscape or decorative light emissions shall have at least 90 percent of their total distribution pattern within the profile of the illuminated structure. B.(2)( ...
njaa.org