Dataset Edition
| General information | |||
|---|---|---|---|
| Dataset name | METEOSAT - MVIRI - Mesoscale Convective Systems Tracking Climatology (LMD-LTHE) - 0.05 | ||
| Data type | ATMOSPHERE | ||
| Created on | 2016-03-14 | ||
| Useful in the framework of | OPERATIONAL-DATA > Satellite products | ||
| Dataset Contact(s) | |||
| Data availability | No data are currently available for this dataset. Click here to receive an email when this dataset becomes available | ||
| Purpose | In West Africa, recent decades have shown significant climatic evolution. In particular, droughts conditions are continuously observed over the Sahel since the 70?s while other regions exhibit a return towards neutral long term conditions. The intimate link between the rainfall and the Mesoscale Convective Systems calls for a concurrent analysis of the evolution of the MCS over the region. A first step is performed here by computing a homogeneous analysis of 24 years of METEOSAT data. MCS are hence detected and tracked in time using the infrared imagery. A simple MCS classification is developed based on the duration of the system and its speed of propagation. Four classes are formed using thresholds selected on a physical basis of 9 hour and 10 m/s, respectively. The long term average spatial distribution of the systems is presented as well as the interannual variability. A dedicated focus on the 2006 season is proposed. This work shows that in spite of its simplicity, the present MCS classification is useful to document convection in West Africa at various scales and should be of help to better understand the observed recent climatic variations over the region. | ||
| Instrument | |||
| Satellite | METEOSAT | ||
| Instrument | MVIRI | ||
| Instrument type | |||
| Parameters | |||
| Parameter name | Mesoscale Convective Systems Tracking | ||
| Parameter keyword | Atmosphere > Clouds | ||
| Unit | |||
| Coverage | |||
| Temporal Coverage | |||
| Date begin | 1983-06-01 | Date end | 2006-09-30 |
| Geographic Coverage | |||
| Area name | West Africa | ||
| West bounding coordinate (°) | -25 | East bounding coordinate (°) | 25 |
| North bounding coordinate (°) | 20 | South bounding coordinate (°) | -5 |
| Data resolution | |||
| Temporal resolution | 0000-00-00 00:30:00 | ||
| Latitude resolution | 0.05 | ||
| Longitude resolution | 0.05 | ||
| Data use information | |||
| Use constraints | See AMMA data policy. | ||
| Data policy | AMMA data policy | ||
