Maps of instantaneous precipitation (mm/hr) generated from MW cross-track scanning radiometers in sun synchronous orbit. Currently processing data from AMSU-A/MHS on board European MetOp and U.S. NOAA satellites
Precipitation range | threshold | target | optimal |
> > 10 mm/h | 90 | 80 | 25 |
> 1-10 mm/h | 120 | 105 | 50 |
< 1 mm/h | 240 | 145 | 90 |
The relationship linking passive microwave brightness temperatures to precipitation has a variable degree of complexity depending on background surface, cloud microphysical and macrophysical structure, environmental conditions, channel frequency, viewing geometry and spatial resolution. In P-IN-MHS this relationship is obtained through the use of Cloud Resolving Model (CRM) simulations, which provide the microphysical structure and the meteorological/environmental parameters needed to fully describe a precipitating cloud system, coupled to a Radiative Transfer Model, for calculating simulated satellite TB vectors consistent with the AMSU-A and MHS PMW radiometers' channel frequencies, viewing angles and view-angle dependent IFOV sizes along the scan projections. A large physically-based database is generated and used in the training phase of an artificial neural network algorithm. Window channels and absorption bands channels are used, exploiting the differential effect of liquid drops or ice particles at different frequencies associated to weighting functions peaking in different atmospheric layers.
Sanò, P., Panegrossi, G., Casella, D., Di Paola, F., Milani, L., Mugnai, A., Petracca, M., Dietrich, S. (2015). The Passive microwave Neural network Precipitation Retrieval (PNPR) algorithm for AMSU/MHS observations: description and application to European case studies. Atmospheric Measurement Techniques, 8(2).
Belgium
2012
Belgium
2011
Bulgaria
2018
Hungary
2011
Hungary
2011
Hungary
2011
Italy
2012
Italy
2011
Poland
2011
Poland
2011
Slovakia
2012
Algorithm Theoretical Baseline Document (ATBD)
1.2
Product User Manual (PUM)
1.1
Product Validation Report (PVR)
1.2
Operational Reports