Scientific Investigations Report 2006-5252
U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2006-5252
| Multiply | By | To obtain |
|---|---|---|
| Length | ||
| inch (in.) | 2.54 | centimeter (cm) |
| inch (in.) | 25.4 | millimeter (mm) |
| foot (ft) | 0.3048 | meter (m) |
| mile (mi) | 1.609 | kilometer (km) |
| Area | ||
| acre | 4,047 | square meter (m2) |
| acre | 0.4047 | hectare (ha) |
| acre | 0.4047 | square hectometer (hm2) |
| acre | 0.004047 | square kilometer (km2) |
| square foot (ft2) | 929.0 | square centimeter (cm2) |
| square foot (ft2) | 0.09290 | square meter (m2) |
| square mile (mi2) | 259.0 | hectare (ha) |
| square mile (mi2) | 2.590 | square kilometer (km2) |
| Volume | ||
| acre-foot (acre-ft) | 1,233 | cubic meter (m3) |
| acre-foot (acre-ft) | 0.001233 | cubic hectometer (hm3) |
| Flow rate | ||
| inch per day (in/day) | 25.4 | millimeter per day |
| acre-foot per year (acre-ft/yr) | 1,233 | cubic meter per year (m3/yr) |
| acre-foot per year (acre-ft/yr) | 0.001233 | cubic hectometer per year (hm3/yr) |
| foot per year (ft/yr) | 0.3048 | meter per year (m/yr) |
| miles per hour (mi/hr) | 0.447 | meters per second |
| Knot | 1.609 | kilometer per day |
| Energy flux | ||
| Watts per square foot (W/ft2) | 10.7643 | Watts per square meter |
| Pressure | ||
| atmosphere, standard (atm) | 101.3 | kilopascal (kPa) |
| Bar | 100 | kilopascal (kPa) |
Temperature in degrees Celsius (°C) may be converted to degrees Fahrenheit (°F) as follows:
°F=(1.8×°C)+32
Temperature in degrees Fahrenheit (°F) may be converted to degrees Celsius (°C) as follows:
°C=(°F-32)/1.8
Vertical coordinate information is referenced to the U.S. Geological Survey datum, adjustment of 1912, locally known as “Power House Datum.” Add 0.55 foot to convert to datum of 1929, leveling of 1935. Add 0.43 foot to convert to datum of 1929, leveling of 1940. Add 0.40 foot to convert to datum of 1929, leveling of 1948. Add 0.03 foot to convert to datum of 1929, leveling of 1963. No elevations have been converted to datum of 1929. Datum of 1929 is known as National Geodetic Vertical Datum of 1929 (NVGD of 1929) and was formerly called “Sea-Level Datum of 1929.”
Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83).
Altitude, as used in this report, refers to distance above the vertical datum.
| Meaning | |
|---|---|
| γ | empirical constant (equation 2) |
| ρ | density of evaporated water (equations 1, 3) |
| γc | psychrometric constant (equation 3) |
| E | evaporation rate (equations 1, 3) |
| e0 | vapor pressure of saturated air at temperature of the water surface (equations 2, 3) |
| ea | vapor pressure of the air above the water surface (equations 2, 3) |
| L | latent heat of vaporization (equations 1, 3) |
| P | atmospheric pressure (equation 2) |
| Qθ | change in energy stored in a body of water (equations 1, 3) |
| Qv | net energy advected into a body of water (equation 1) |
| Qb | net energy lost by the body of water through the exchange of long wave radiation between the atmosphere and the body of water (equation 1) |
| Qn | net radiation (equation 3) |
| Qr | reflected solar radiation (equation 1) |
| Qs | solar radiation incident to the water surface (equation 1) |
| R | Bowen ratio (equations 1, 2) |
| Rn | monthly net radiation at Water Barge Cove |
| T0 | temperature of water (equations 2, 3) |
| Ta | temperature of the air (equations 2, 3) |
| USGS | United States Geological Survey |
U.S.
Department of the Interior | U.S. Geological
Survey
Persistent URL: https://pubs.water.usgs.gov/sir20065252
Page Contact Information: Publications Team
Page Last Modified: Thursday, 01-Dec-2016 19:29:23 EST
