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Mountain Brook, AL
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County:  Jefferson State: AL
Active Since: 2010 Observer: Steinkampf
Lat/Long: 33.4, 0.0 Landsat WRS Path/Row: 20/37
MODIS TIle V/H: 5/10 MODIS Line, Samp: 782.11, 918.33

Site/Hive Description:

The hive is located in a backyard apiary established in April 2009, in a hilly suburban area 5 miles southeast of Birmingham. The hive faces southeast and is partially shaded by trees but has morning sun year-round.

The double deep hive has a screened bottom board mounted on pressure-treated pine feet treated with water repellent.

The colony was started from a package in April 2010 and an Italian queen.

The scale is a Fairbanks 1124A, 0.5 lb divisions, weights are maintained periodically to within 10 mg with an electronic balance, and is calibrated with a bathroom scale at about 200 lb, to within 2%. The beam and hanging counterpoise are protected from weather with a wood/plastic box.

There are many landscaped lawns with diverse forage due to the variety of landscaping.

Nectar Flow Data 2010

Download Data File (comma delimited), download QA flag key


Nectar Flow Data 2011

Download Data File (comma delimited), download QA flag key


Nectar Flow Data 2012

Download Data File (comma delimited), download QA flag key



MODIS Subset Data (from the ORNL DAAC)
Red dots are the average of all pixels with acceptable quality (see landcover extract below for area covered).
Blue dots are the center pixel only (point is not plotted if the pixel is of unacceptable quality).





The Normalized Difference Vegetation Index (NDVI) is the ratio of the  difference between visible (red) and infra-red (IR) wavebands to the sum of these bands. 

NDVI = nir - red / nir + red

 NDVI provides an indication of the amount and vigor of vegetated  surfaces. 

 NDVI has been widely used with multiple generations of satellite data.


 The Enhnaced Vegetation Index (EVI) is a more complicated combination of wavebands compared to the more widely used index, NDVI.  The advantage of this newer index is improved sensitivity in high biomass regions and reduction in atmospheric influences.
pNIR = NIR reflectance
pRed = red reflectance
pBlue = blue reflectance
C1 = atmosphere resistance red correction coefficient
C2 = atmosphere resistance blue correction coefficient
L = canopy background brightness
G = gain factor

The MODIS sensor on the Terra satellite platform provides us with 16-day composite measures of NDVI/EVI throughout the year.  NASA distributes MODIS data from many of their distributed data centers.

MODIS Land Cover

MODIS Data Subset Citation:
Oak Ridge National Laboratory Distributed Active Archive Center (ORNL DAAC). 2007. MODIS subsetted land products, Collection 4. Available on-line [] from ORNL DAAC, Oak Ridge, Tennessee, U.S.A..

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NASA Official: Robert Wolfe
Last Updated: November 21, 2016