Comparison of Satellite Rainfall Estimates and Rain Gauge Measurements in Italy, and Impact on Landslide Modeling

• DOI: 10.3390/cli5040090
• Publication Date: 2017-12-04T16:16:38Z
• Authors: Mauro Rossi; Dalia Kirschbaum; Daniela Valigi; Alessandro Mondini; Fausto Guzzetti
• Keywords: landslide; rain gauges; hydrogeological model; 13. Climate action; 0207 environmental engineering; satellite rainfall; landslide, satellite rainfall, TRMM, rain gauges, hydrogeological model; 02 engineering and technology; 16. Peace & justice; 01 natural sciences; TRMM; landslide; satellite rainfall; TRMM; rain gauges; hydrogeological model; 0105 earth and related environmental sciences

Landslides can be triggered by intense or prolonged rainfall. Rain gauge measurements are commonly used to predict landslides even if satellite rainfall estimates available. Recent research focuses on the comparison of and measurements. The rain data from Italian network (collected in system database “Verifica Rischio Frana”, VRF) compared with National Aeronautics Space Administration (NASA) Tropical Rainfall Measuring Mission (TRMM) products. For purpose, we couple point at individual grid cells, evaluating correlation between different morpho-climatological conditions. We then analyze statistical distributions both types events derived them. Results show that underestimates ground data, largest differences mountainous areas. Power-law models, more appropriate correlate data. satellite-based products exhibit them differ. In conclusion, cannot directly requiring local investigation account for specific settings. suggest forecasting landslides, only performing a scaling