Appendix E. Hydromet
Raingage Correction
E.1 Hydromet Raingage Correction
Overview
IRIS/Hydromet is an optional IRIS package for hydrometeorological applications.
Table 27 IRIS Features for Hydrometeorological Applications
Standard Features Optional Features
Display of rainfall rate in mm/hr or inches/hour for a
Z-R relationship selected in the Product
Configuration menus for:
• PPI
• RHI
• CAPPI
• MAX
• XSECT
The units selection is made by the color scale
selection.
CATCH product:
• Provide precipitation average depth in
subcatchment regions for selectable time periods.
• Displayed as color-coded regions or as color-
coded icons.
Subcatchment regions are defined similarly to
overlays. In the Quick Look Window, you can right-
click the mouse on a region or icon to see a bar graph
representation of the subcatchment amounts by hour.
RAIN1
Hourly rainfall accumulation for selectable Z-R
relationship.
GAGE product input with raingage calibration. This
allows the radar RAIN1 hourly accumulations to be
calibrated to the actual rain that is measured in gages.
GAGE products may contain the ZR coecient and
exponent (by site) derived from disdrometer
measurement or other source.
RAINN
Multiple-hour rainfall accumulation based on the
hourly amounts.
View a 12-hour history.
More information
‣
CATCH: Subcatchments Precipitation Accumulation (page 121)
‣
GAGE: Raingage Reports (page 165)
‣
RAIN-N: N-Hour Rain Accumulation (page 59)
E.2
Hydromet Data Flow for Raingage
Correction
The following figure shows the data flow for the raingage correction.
Appendix E – Hydromet Raingage Correction
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