Wet Days
Wet Days#
The number of wet days (DD) is the largest number of days with daily precipitation amount more than 1 mm (or depending on the rain days criteria of the country), within a certain time. Usually the process counts the number of days within a year to measure the wet condition.
How it works
Calculate the number of rain days based on the threshold in a year.
Option for rain day’s threshold: 1, 2.5, 5, 10 or 20 milimeters of rainfall per day.
IF todayRAIN > 1 THEN WD == 1
WD derived from IMERG data.
About the data
Characteristic |
Description |
---|---|
Function |
Display daily WD |
Variable |
WD |
Geographic coverage |
Global 60N-60S, 180W-180E |
Spatial resolution |
0.1 degree ~ 11.1 km at equator |
Temporal resolution |
Daily |
Format |
GeoTIFF |
Unit |
Number of day |
Symbology
The threshold and the symbology for the WD can follow below color codes and image.
Threshold |
Hex |
RGB |
---|---|---|
<50 |
|
rgb(255,255,204) |
51 - 100 |
|
rgb(194,230,153) |
101 - 150 |
|
rgb(120,198,121) |
151 - 200 |
|
rgb(49,163,84) |
>201 |
|
rgb(0,104,55) |
Data access
Global WD data available at DEC S3: s3://wbgdecinternal-ntl/climate/products/wetdays-imerg
.