GFS forecasts at 00, 06, 12 and 18 UTC will be available about 4.5 hours later
PWV forecasts from the GFS
model for the next
5 days. Forecasts start at the day and hour shown in the figure title.
From that time, 3-hourly PWV forecasts for the next 5 days (120 hours)
are plotted. Vertical red lines limit each one of 5 days of forecasts.
The GFS model is run 4 times per day at 0, 6, 12 and 18 UTC. The figure
is updated 4 times per day as soon as outputs from the new model run are
released. A .txt file with PWV forecasts is also available.
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PWV Forecast
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Ascii file description
The ascii file contains 4 columns of data that represent: [Date of
forecast initiation, Hour of forecast initiation, Forecast hour, PWV
forecast]
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Statistics for the last 7 days of forecasts
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The figure shows the comparison between PWV forecasts during the last 7 days and PWV from APEX radiometer. A legend is displayed showing the colors used for APEX radiometer and the GFS forecasts. Vertical black lines limit the 7 days of analysis. The first panel shows the PWV forecasts initiated every day at 00 UTC. The black line represents APEX radiometer during the 7 days. The blue line represents the GFS forecast initiated 7 days earlier at 00 UTC, extending for the next 5 days. It is displayed in the legend as GFS-7d. Each color represents the new forecast initiated the next day. This continues until the grey line that represents the GFS forecast initiated 1 day earlier at 00 UTC, extending for only 1 day until present day. It is displayed in the legend as GFS-1d. The second, third and fourth panels show the comparison of PWV forecasts initiated at 6, 12 and 18 UTC, respectively, with APEX radiometer.
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Legend
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Same as the previous figure but for the bias (model-obs)
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Legend
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Same as the previous figure but for the relative bias
(model-obs)/obs
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Legend
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