Update the mean values of a TOVS water vapor climatology image
Update the mean values of a TOVS water vapor climatology image using a daily observation image.
- IN
- Input image. A TOVS water vapor daily obsevation image with values to add to OUT.
- OUT
- Output image. A TOVS water vapor climatology (fill) image to which values from IN are added.
The mean and count bands in the daily fill image df010696 are updated with values from wv140696.
Mean values are stored in band 1 and the number of values (counts) are stored in band 2 of TOVS water vapor fill images. These values are updated with new water vapor values using LOGICAL and MATH functions as follows:
1. expand the mean values to sums (means*counts) 2. mask the holes in the input image with zeroes 3. add new values to sums 4. update the counts to include new values 5. calculate new means (sums/counts) 6. store the new means and counts
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