Dataset Edition
| Présentation générale | |||
|---|---|---|---|
| Nom du jeu de données | QWECI.Met_Owabi - Automatic Weather Station, Owabi, Ghana | ||
| Créé le | 2012-09-07 | ||
| Projet(s) | QWECI | ||
| Date de début (yyyy-mm-dd) | 2010-05-01 | Date de fin (yyyy-mm-dd) | 2012-05-17 |
| Contact(s) | |||
| Accès aux données |  Dataset as provided by the Principal Investigator | ||
| Description du jeu de données | |||
| Résumé | The OwabiAWS data includes observations from an Automatic Weather Station (AWS), which is located at the Owabi hydrometeorological weather station in the Kumasi region of Ghana. The weather station but not the AWS is maintained by the Ghanaian meteorological agency. The AWS is situated within a rural area, in the vicinity of an artificial lake. The surface around the AWS is covered by seasonally varying grass. For some periods the grass was cut by the staff of the weather station. The station was installed by the Institute of Geophysics and Meteorology of the University of Cologne/Germany. The station was put in operation on 01 May 2010. Currently, data is available until May 2012. The AWS has been donated to the Kwame Nkrumah University of Science and Technology (KNUST) and was operated by staff from KNUST. The OwabiAWS data comprises various observed meteorological variables from the AWS. Included are the ten-minutely rainfall amount (measured with a tipping bucket pluviometer), heat flux (two heat flux plates at 20 cm below surface), temperature (platinum resistance thermometer, PT100), relative humidity (capacitive humidity sensor), matrix potential (equitensiometer; information about soil moisture), three dimensional wind vector (ultrasonic anemometer at a height of about 4.5 m, including further related information, e.g. standard deviations), shortwave (pyranometer) and longwave (pyrgeometer) radiation, and pressure (barometer) data. Temperature and humidity are measured in both 2 m and 4 m height above ground. Unfortunately, large data gaps are present in the temperature and humidity time series. Note that the ventilation of the temperature and humidity sensors broke down partly. The user therefore should carefully use the temperature and relative humidity values! The pyranometers are upward and downward directed, which allows the calculation of the radiation balance at the ground. Note that the radiation measurements suffer partly from contaminations of the glass dome (shortwave radiation) and solar blind silicon window (longwave radiation). The upward shortwave radiation measurement suffers from the end of March 2012 from technical problems (defective contact). This data was therefore deleted. The original temporal resolution of the data was one second and was aggregated or averaged to a time resolution of ten minutes. Rainfall amounts are automatically summed up and the other parameters are automatically averaged to the time interval by the AWS. | ||
| Strategie d'observation | The automatic weather station (AWS) located at Owabi in Ghana is equipped with sensors to measure the rain amount, heat flux, temperature, relative humidity, matrix potential, wind speed, shortwave and longwave radiation, and pressure. Currently, the data is available for the period 01 May 2010 to May 2012. The original temporal resolution was one second, but the data is summed up (for rain amounts) or averaged (for the other parameters included in the dataset) at a ten minute interval. | ||
| Description de l'instrument | |||
| No information available | |||
| Information géographique | |||
| Site 1 | |||
| Mot-clé de localistion | CONTINENT > AFRICA > WESTERN AFRICA > GHANA | ||
| Site | OWABI | ||
| Type de plateforme | In Situ Land-based Platforms > GROUND STATIONS | ||
| Longitude minimale (°) | -1.7029 | Longitude maximale (°) | -1.7029 |
| Latitude maximale (°) | 6.748 | Latitude minimale (°) | 6.748 |
| Paramètres mesurés | |||
| Paramètre mesuré 1 | |||
| Nom du paramètre | Wind Speed | ||
| Mot-clé du paramètre | Atmosphere > Atmospheric Winds > Wind Speed | ||
| Unité | meter per second - m/s | ||
| Date de début (yyyy-mm-dd) | 2010-05-01 | Date de fin (yyyy-mm-dd) | 2012-05-17 |
| Précision du capteur / Incertitude | |||
| Paramètre mesuré 2 | |||
| Nom du paramètre | Relative humidity | ||
| Mot-clé du paramètre | Atmosphere > Atmospheric Water Vapor | ||
| Unité | percent - % | ||
| Date de début (yyyy-mm-dd) | 2010-05-01 | Date de fin (yyyy-mm-dd) | 2012-05-17 |
| Précision du capteur / Incertitude | |||
| Paramètre mesuré 3 | |||
| Nom du paramètre | Outgoing Longwave Radiation | ||
| Mot-clé du paramètre | Atmosphere > Atmospheric Radiation > Outgoing Longwave Radiation | ||
| Unité | Watt per square meter - W.m-2 | ||
| Date de début (yyyy-mm-dd) | 2010-05-01 | Date de fin (yyyy-mm-dd) | 2012-05-17 |
| Précision du capteur / Incertitude | |||
| Paramètre mesuré 4 | |||
| Nom du paramètre | Outgoing Shortwave Radiation | ||
| Mot-clé du paramètre | Atmosphere > Atmospheric Radiation | ||
| Unité | Watt per square meter - W.m-2 | ||
| Date de début (yyyy-mm-dd) | 2010-05-01 | Date de fin (yyyy-mm-dd) | 2012-05-17 |
| Précision du capteur / Incertitude | |||
| Paramètre mesuré 5 | |||
| Nom du paramètre | U Wind component | ||
| Mot-clé du paramètre | Atmosphere > Atmospheric Winds | ||
| Unité | meter per second - m/s | ||
| Date de début (yyyy-mm-dd) | 2010-05-01 | Date de fin (yyyy-mm-dd) | 2012-05-17 |
| Précision du capteur / Incertitude | |||
| Paramètre mesuré 6 | |||
| Nom du paramètre | V Wind component | ||
| Mot-clé du paramètre | Atmosphere > Atmospheric Winds | ||
| Unité | meter per second - m/s | ||
| Date de début (yyyy-mm-dd) | 2010-05-01 | Date de fin (yyyy-mm-dd) | 2012-05-17 |
| Précision du capteur / Incertitude | |||
| Paramètre mesuré 7 | |||
| Nom du paramètre | W wind component | ||
| Mot-clé du paramètre | Atmosphere > Atmospheric Winds | ||
| Unité | meter per second - m/s | ||
| Date de début (yyyy-mm-dd) | 2010-05-01 | Date de fin (yyyy-mm-dd) | 2012-05-17 |
| Précision du capteur / Incertitude | |||
| Paramètre mesuré 8 | |||
| Nom du paramètre | Air Pressure | ||
| Mot-clé du paramètre | Atmosphere > Atmospheric Pressure | ||
| Unité | hecto Pascal - hPa | ||
| Date de début (yyyy-mm-dd) | 2010-05-01 | Date de fin (yyyy-mm-dd) | 2012-05-17 |
| Précision du capteur / Incertitude | |||
| Paramètre mesuré 9 | |||
| Nom du paramètre | Air Temperature | ||
| Mot-clé du paramètre | Atmosphere > Atmospheric Temperature > Surface Temperature > Air Temperature | ||
| Unité | Kelvin - K | ||
| Date de début (yyyy-mm-dd) | 2010-05-01 | Date de fin (yyyy-mm-dd) | 2012-05-17 |
| Précision du capteur / Incertitude | |||
| Paramètre mesuré 10 | |||
| Nom du paramètre | Wind Direction | ||
| Mot-clé du paramètre | Atmosphere > Atmospheric Winds > Wind Direction | ||
| Unité | degrees - degrees | ||
| Date de début (yyyy-mm-dd) | 2010-05-01 | Date de fin (yyyy-mm-dd) | 2012-05-17 |
| Précision du capteur / Incertitude | |||
| Paramètre mesuré 11 | |||
| Nom du paramètre | Precipitation Amount | ||
| Mot-clé du paramètre | Atmosphere > Precipitation | ||
| Unité | pH unit | ||
| Date de début (yyyy-mm-dd) | 2010-05-01 | Date de fin (yyyy-mm-dd) | 2012-05-17 |
| Précision du capteur / Incertitude | |||
| Paramètre mesuré 12 | |||
| Nom du paramètre | Incoming Longwave Radiation | ||
| Mot-clé du paramètre | Atmosphere > Atmospheric Radiation | ||
| Unité | Watt per square meter - W.m-2 | ||
| Date de début (yyyy-mm-dd) | 2010-05-01 | Date de fin (yyyy-mm-dd) | 2012-05-17 |
| Précision du capteur / Incertitude | |||
| Paramètre mesuré 13 | |||
| Nom du paramètre | Incoming Shortwave Radiation | ||
| Mot-clé du paramètre | Atmosphere > Atmospheric Radiation | ||
| Unité | Watt per square meter - W.m-2 | ||
| Date de début (yyyy-mm-dd) | 2010-05-01 | Date de fin (yyyy-mm-dd) | 2012-05-17 |
| Précision du capteur / Incertitude | |||
| Paramètre mesuré 14 | |||
| Nom du paramètre | Heat Flux | ||
| Mot-clé du paramètre | Land Surface > Soils | ||
| Unité | Watt per square meter - W.m-2 | ||
| Date de début (yyyy-mm-dd) | 2010-05-01 | Date de fin (yyyy-mm-dd) | 2012-05-17 |
| Précision du capteur / Incertitude | |||
| Information sur l'utilisation des données | |||
| Conditions d'utilisation des données | AMMA data chart | ||
| Base de données | AMMA database | ||
| Format des fichiers de données | csv file (comma separated values) | ||
