README file for albedo data measured at fixed and mobile SURFRAD sites
Updated 2017.06.15

Instruments:

MFRSR:  Multi-Filter Rotating Shadowband Radiometer (also called MFR7)
        Manufactured by Yankee Environmental Systems, Inc.

MFR10:  Multi-Filter Rotating Shadowband Radiometer (also called MFR7)
        Manufactured by Yankee Environmental Systems, Inc.
	Without the shadowband (sensor only) mounted on a tower used
        to measure reflected spectral irradiance.


Spectral albedo is obtained with a MFRSR operating in standard fashion, and a
MFRSR head mounted on a tower (MFR10) at ~9 m above the surface for most
sites.  Wasco, Oregon is an exception as we could not install a 10 m tower.
The Wasco MFR10 is about 1 m above the surface.

Because of the distances between up-pointing and down-pointing
instruments, and the fact we are using instaneous samples, the data
can be particularly noisy on partly cloudy days.  Note that albedo
values greater than 2 were set to the missing value (-9.999).

00 - YYYYMMDDhhmmss
01 - MFRSR time.  Fractional days since 1900.01.01
02 - Decimal YYYYMMDD
03 - Decimal Day-of-Year
04 - Decimal Year
   -
05 - Air Mass
06 - Solar Azimuth Angle
07 - Solar Zenith Angle
08 - Cosine Solar Zenith Angle
   -
09 - Albedo:  415 nm
10 - Albedo:  500 nm
11 - Albedo: 1625 nm
12 - Albedo:  673 nm
13 - Albedo:  870 nm
14 - Albedo:  940 nm
15 - NDVI "Normailized Difference Vegetation Index"