ARCHIVE - Forecast relative to the night starting on 2019/03/19 MST

Note: click on a figure to magnify the image.
Date of figures refers to the start of night in MST.

RELATIVE HUMIDITY VERTICAL PROFILES

Vertical profiles of the relative humidity are computed in the [0-20km] range above ground level (a.g.l.) and centered on the LBT. Data points frequency is 2 minutes.




  • TEMPORAL EVOLUTION:
    The contour plot represents the temporal evolution of relative humidity vertical profiles between the sunset and the sunrise. On the x-axis is time in UT (bottom), in MST (top). Mountain Standard Time MST=UT-7. On the y-axis the height above ground level. The color scale represents the relative humidity percentage.

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Fig. 1: Relative humidity vertical profile temporal evolution between the sunset and the sunrise. Dashed lines indicate the dusk and the dawn.




  • TIME AVERAGES:
    Three time averages are presented, computed in the first, central and last part of the night (see partition). The corresponding MST (MST=UT-7) is shown on the top of the figure.
    The blue light halo around each average represents the +/- sigma in the respective time window.
    Fig. 5 represents the three time averages in the same plot with different colors to better appreciate the macroscopic changes in the three temporal intervals.

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Fig. 2: Average relative humidity in the "first part of the night".

Fig. 3: Average relative humidity in the "central part of the night".

Fig. 4: Average relative humidity in the "last part of the night".

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Fig 5: Averaged relative humidity in the three successive periods of the night (see red, blue and green intervals).