Vaisala IRIS, User Manual

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3. Configure the RAIN-N product:
Rain1
Specify the product name of the input hourly RAIN1 product by selecting the
Rain1 button and choosing from a list of products or by typing the name in the
field.
When you enter a product name, the associated task information is displayed in
the
TASK Summary portion of the menu.
Hours
Specify the number of hours to integrate. When the product runs, it integrates
data for the last
N hours.
If a RAIN1 product is missing for one of the hours in the interval, the algorithm
assumes that no rain fell during that hour. The product output shows how many
hours were integrated.
Color Scale , Levels , and 1st Level/Step
The color levels can be specified, but the resolution is fixed by the resolution of
the
RAIN1 configuration.
More information
‣
Hydromet Raingage Correction Overview (page 363)
3.13.1 Scheduling RAIN-N Products
The Data Time that you specify when you schedule the product are quantized to the time
value in the product configuration for the nearest interval that ends the integration.
Use the
Skip Time field if you want only the accumulations for specific time intervals. You
can set the skip time to any multiple of the accumulation period. For example, if you want a
3-hour integration only for the periods ending at 03:00, 06:00, 09:00, ..., set the
Skip Time
field to 03:00.
The scheduling algorithm for the
RAIN-N product looks for the arrival of the most recent
RAIN1 product (after the "current hour") and then runs the RAIN-N algorithm.
There are 2 cases that the product scheduler must handle, that is, the RAIN1 product arrives
or does not arrive.
Note that in the time-line figures below:
• The horizontal line represents the data time of the RAIN1 products that is always
exactly on the ending hour.
•
R
represents an input RAIN1 product.
•
R*
represents the current hour RAIN1 product whose arrival triggers the RAIN-N
product to run.
• The vertical bars represents even hours.
The examples are for the case of a 4-hour integration.
IRIS Product and Display User Guide M211319EN-H
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