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Progress Towards The Implementation and Development Of Tide-Met Stations in The Emirate of Dubai
Yousuf AbdulRahman Al Marzooqi
HEAD OF GEODESY AND HYDROGRAPHIC SURVEY UNIT
DUBAI MUNICIPALITY,
UAE
Email: YAMARSOOQI@dm.gov.org
Abstract
The main objective of the establishing a network of automatic Tide/Meteorological stations is to determine the accurate Chart Datum and Mean Sea Level and to connect the vertical datum to the land control points and update the complete vertical control network in Dubai. Due to the massive constructions taking place in the offshore/costal area of Dubai Emirate, the Geodesy and Hydrographic Survey Unit of the Survey section of Dubai Municipality had established five permanent Tide/meteorological stations along the coastal are of Dubai Emirate. Also it is decided to establish an offshore Tide/Meteorological station to receive the Tide/Meteorological data of the offshore area of Dubai Emirate. These data not only allows for the determination and maintenance of marine vertical datum used by Hydrographers, marine Engineers, but also helps in the Costal construction management, determination of Marine Boundary, Tide Prediction, detection of Storm Surges and sudden Sea Level variations. It also envisage in the determination of long-term water level variations or trends. These data retrieved from these Tide/Meteorological stations supports other governmental and private agencies such as Military Services, Coast Guard, Airport Authority, Mariners and other related field.
The database contains an extended series of water level measurements along with meteorological data such as wind speed, humidity, air and water temperature, wind direction, visibility and barometric pressure recorded in the five tide/meteorological stations. . This data is processed to generate a number of products such as monthly and yearly averages for mean tide and sea level, mean high and low water, mean range, Lowest and Highest Astronomical Tides (LAT & HAT) etc. The water level information along with other meteorological data recorded in all the tide/meteorological stations and transmitted in real time to the control station established in the survey section of Dubai Municipality. These observed values are then processed to generate the mean and extreme values for difference temporal intervals as noted above.
The products are distributed on either hard copy or soft copy. Now the near real time tide/meteorological data are made available through the internet using a server. Hence the public is able to access the data either internally over an intranet or external public access via the Internet. Also Provisions are made within the data processing system to convert the measured water levels to local tidal datum with reference to a Datum established by the Dubai Municipality (DLTM). .
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