Dataset Edition

Présentation générale
Nom du jeu de donnéesAS.BVC_T2 - Constant volume balloon, launched from Benin
Créé le2006-01-10
Projet(s)AMMA > AMMA-SOP
Date de début (yyyy-mm-dd)2006-06-16Date de fin (yyyy-mm-dd)2006-07-15
Accès aux données Dataset as provided by the Principal Investigator
 Further selection
 Data availability calendar
Description du jeu de données
RésuméThe CVB will be deployed during SOP-1 (monsoon onset) and will allow to address several scientific issues :
1) lagrangian trajectory and humidification of the monsoon (diurnal cycle)
2) modulation of the monsoon by the african easterly waves (maximum of perturbation at 700 hPa)
3) estimation of the monsoon penetration over the continent and determination of the monsoon onset
4) quantification of the performances of NCEP/ECMWF on the meteorological fields (wind speed and direction, pressure, temperature and moisture) in the AMMA region.
5) validation of research models (e.g. Méso-NH) for the understanding of the dynamical processes associated with the monsoon onset.
6) assimilation of the full thermodynamical dataset during SOP-1 in 3D-VAR MANDOPAS at th escale of western Africa. The objective is to compute water vapour budgets from the analyses of the full dataset (ground-based, airborne and satellite-borne measurements). The relevance of the CVB data must be addressed using simulations.
Strategie d'observationThe CVB will be launched at a density level ranging between 1.07 and 1.03. At this time, three possible launching site are investigated (west of Ghana near the coast, Cotonou or Parakou in Benin). The best choice is west of Ghana and a prospection mission is envisaged before the end of the year. In case, there is no possible site in this area, the CVB would then be launched from either Cotonou or Djougou.
The sampling strategy will be mixed: half of the CVB will be launched regularly during SOP-1, in order to document the monsoon onset. The remaining half will be used to increase the sampling before and after the monsoon onset (the intensification of the sampling will rely on the monsoon onset prediction by numerical models at AOC).
Description de l'instrument
Information géographique
Site 1
Type de plateformeIn Situ Land-based Platforms > GROUND STATIONS
Longitude minimale (°)1.2802Longitude maximale (°)22.7562
Latitude maximale (°)20.3355Latitude minimale (°)5.1662
Altitude min5Altitude max2607
Paramètres mesurés
Paramètre mesuré 1
Nom du paramètreAir Temperature
Mot-clé du paramètreAtmosphere > Atmospheric Temperature > Surface Temperature > Air Temperature
UnitéDegrees Celsius - °C
Date de début (yyyy-mm-dd)2006-06-16Date de fin (yyyy-mm-dd)2006-07-15
Précision du capteur / Incertitude
Paramètre mesuré 2
Nom du paramètreAir Pressure
Mot-clé du paramètreAtmosphere > Atmospheric Pressure > Atmospheric Pressure Measurements
Unitémillibars - mbar
Date de début (yyyy-mm-dd)2006-06-16Date de fin (yyyy-mm-dd)2006-07-15
Précision du capteur / Incertitude
Paramètre mesuré 3
Nom du paramètreHumidity
Mot-clé du paramètreAtmosphere > Atmospheric Water Vapor > Water Vapor Indicators > Humidity
Unitépercent - %
Date de début (yyyy-mm-dd)2006-06-16Date de fin (yyyy-mm-dd)2006-07-15
Précision du capteur / Incertitude
Information sur l'utilisation des données
Conditions d'utilisation des donnéesAMMA data policy
Charte d'accès aux donnéesAMMA data policy
Format des fichiers de données