Virtual Workshop: Warm Conveyor Belts – a challenge to forecasting
Session
Conveners
Session 7
- Irina Sandu (ECMWF)
During the NAWDEX field campaign, the RASTA Doppler radar aboard the French Falcon-20 provided unique cloud and wind measurements inside the warm conveyor belt (WCB) of the “Stalactite” cyclone. Vertical structures of high radar reflectivity—of ~20-km width and 2–4-km height—were observed embedded in a broad cloud structure extending over the whole troposphere. A low-level jet with wind speed...
The present study investigates diabatic processes along the Warm Conveyor Belt (WCB hereafter) of a deep extratropical cyclone, called the Stalactite Cyclone, observed during the NAWDEX field campaign in fall 2016 over the North Atlantic. The ridge building during the development of the cyclone led to the formation of a large-scale Scandinavian blocking. It is therefore particularly important...
The main goal of this study is to analyze the representation of the Stalactite Cyclone warm conveyor belt (WCB) in the global Météo-France model ARPEGE. Two simulations, each using one of the two different deep convection parametrization schemes developed in ARPEGE are compared. The first one is the Bougeault’s scheme, developed in 1985 and the second one is based on grid-scale budget...