Precipitation/Soil Moisture integrated product
Gridded daily precipitation obtained by merging soil moisture-derived rainfall with Passive Microwave
(PMW) rainfall estimates, provided by H-AUX-23 and H67 precipitation products. The integration with
soil moisture derived rainfall, obtained through SM2RAIN algorithm, will provide a more reliable
estimation of rainfall accumulation at ground. Indeed, SM2RAIN uses two consecutives soil moisture
observations, obtained through H101, H16 and H104 soil moisture products, to estimate the total
amount of rainfall that infiltrates into the soil. The estimates rainfall is then integrated with high-quality
PMW data in order to overcome the unavailability of precipitation estimates between to satellite
- Coverage: LAT 60°S - 75°N, LON 60°W - 60°E
- Spatial Resolution: Resolution: 0.25°x0.25°
- Timeliness: N. A.
|RR > 1 mm/24h CC = 0.50
|RR > 1 mm/24h CC = 0.60
|RR > 1 mm/24h CC = 0.65
Characteristics and Methods
Gridded daily precipitation obtained by merging soil moisture-derived rainfall, obtained through the
application of SM2RAIN to the SSM ASCAT-A/B/C-NRT-O12.5 (H101, H16 and H104) soil moisture
products, with Passive Microwave (PMW) rainfall estimates, available as H-AUX-23 and H67. More in
details, the SM2RAIN algorithm will provide rainfall accumulation at ground between two consecutives
soil moisture observations, whereas H-AUX-23 and H67 will provide high-quality precipitation estimates
through a constellation of PMW satellites. The integration will provide a more reliable rainfall product
due to the complementarity of the two approaches, allowing to overcome the limitations of each
retrieval techniques. Moreover, the integration with PMW will allow to provide rainfall also over oceans.
H64 will provide the accumulated rainfall over the H SAF Extended Area on a daily basis over a regular
0.25° grid. The product will provide the rainfall fallen the day before the date of the algorithm run.
Meteorological ground radar, rain gauge over LAND only.