CALIBRATION QC TRENDING PLOTS

How to read and interpret the "DAILY" and "ORBITAL" Average Plots, for the following
instruments:

NOAA 12/D AVHRR, HIRS, MSU
NOAA 14/J AVHRR, HIRS, MSU, SSU

Future -- NOAA 15    AVHRR, HIRS, AMSU-A, AMSU-B *Launch Feb 98.

Two types of plots are generated for each active satellite, showing 1,2,4,6,8 possible plots
per page.  Clicking the pointer on any graph will expand it to full screen resolution.

I.   Long term trending, shows one average point "per Day", for the last 61 days of a given
instrument parameter.  Each plot point represents an average of "fourteen orbits" per 24
hours.  

II.  Short term trending, shows one average point "per Orbit" for the last 61 orbits of a
given instrument parameter.  Each plot point represents an average of its "calibration
summaries" for that orbit.
     Using the Control L (Ctl+L) function to display a list of the Orbits seen in graph. 
X-axis positions, Y-axis value of the plot, Full 44 character  Data Set Name', time of orbit
length in minutes, for each orbit displayed.

Labels
At the very top of the screen is shown the file name(type of plot {Weekly} satellite
number{12..} Plots(number currently view) of total number of plots in selection.  The Run
Day (:135) Julian day Job was processed on the CEMSCS computer.

     Across the Bottom of each graph is shown (1) the Name of the Satellite {NOAA
12..}, (2) the Type of plot {Orbit or Day average}, (3) the Year, the start and end Julian
Day of the most recent orbits { 1997 JD030-035} .
     
     Across the Top of each graph is shown (1) a # parameter number, (2) instrument
{GAC,HIRS,MSU,SSU}, (3) plot parameter label description.
     Y axis, shows the Minimum and Maximum values divided into five even segments.
     X axis, shows the 61 plotted points, 0 being the most recent.

Plot Values for the Y axis
NOAA 12 and 14 plots.    
     The NOAA CEMSCS computer produces the Weekly trending updates every
Monday morning by 7: am.

Future...NOAA 15 trending data will be produced every orbit.