Analysis of the variability water vapor throughout the troposphere (diurnal cycle, intra-seasonal and interannual variability). Monitoring of the Monsoon front to the North, passage of MCS in the Catch window, assimilation into mesoscale atmospheric models (case studies and water budgets).
Strategie d'observation
Three stations will be installed on a meridian transect (centered on 0-2°E): Djougou, Niamey and Gao. They will measure continuously integrated water vapor, over the 3 years of the EOP. They will complement observations from existing IGS network (Dakar, Yamassoukro and Libreville). These sites should be maintained after 2007 either within the LOP structure or through long-term cooperation with African partners.
Description de l'instrument
Fabricant
INSU
Modèle
GPS Receiver
Information géographique
Site 1
Mot-clé de localistion
CONTINENT > AFRICA > WESTERN AFRICA
Site
GPS Network, Dakar, Djougou, Gao, Niamey
Type de plateforme
In Situ Land-based Platforms > GROUND STATIONS
Longitude minimale (°)
-17.47
Longitude maximale (°)
2.18
Latitude maximale (°)
16.73
Latitude minimale (°)
9.55
Altitude min
15.7
Altitude max
402.3
Paramètres mesurés
Paramètre mesuré 1
Nom du paramètre
Zenith Tropospheric Delay
Mot-clé du paramètre
Atmosphere > Atmospheric Water Vapor
Unité
meters
Date de début (yyyy-mm-dd)
2005-01-01
Date de fin (yyyy-mm-dd)
2011-06-17
Précision du capteur / Incertitude
Paramètre mesuré 2
Nom du paramètre
Integrated Water Vapor
Mot-clé du paramètre
Atmosphere > Atmospheric Water Vapor
Unité
kilograms per square meter
Date de début (yyyy-mm-dd)
2005-01-01
Date de fin (yyyy-mm-dd)
2011-06-17
Précision du capteur / Incertitude
Information sur l'utilisation des données
Conditions d'utilisation des données
AMMA data policy +
Take note of and make reference to the following publication regarding the AMMA GPS data:
Bock, O., M.N. Bouin, E. Doerflinger, P. Collard, F. Masson, R. Meynadier, S. Nahmani,
M. Koité, K. Gaptia Lawan Balawan, F. Didé, D. Ouedraogo, S. Pokperlaar, J.-B. Ngamini,
J.P. Lafore , S. Janicot, F. Guichard, M. Nuret, The West African Monsoon observed with
ground-based GPS receivers during AMMA,
J. Geophys. Res., 113, D21105, doi:10.1029/2008JD010327.
Dataset as provided by the Principal Investigator
Further selection
Data availability calendar