Differences

This shows you the differences between two versions of the page.

--- mersea-oil-spill:kilden_howto [2008-03-07 12:49:15]
bruceh
+++ mersea-oil-spill:kilden_howto [2022-05-31 09:29:32]
@@ Line 1: / Line 1: @@
-====== How to perform forecast simulations with met.no's online drift services ======
-This page is for **Mersea privileged users**. You must obtain a userid and password from met.no to use the services as described.
-Contact: Bruce.Hackett@met.no
-==== Access to met.no's online drift services  ====
-Go to [[http://kilden.met.no|kilden.met.no]]
-Log in with the Mersea userid and password provided by met.no.
-==== Service site navigation ====
-The menu in the left-hand panel is used to select what you want:
-  * **List simulations** shows a list of the most recent simulations for this user in the main panel. Useful for noting the serial number for simulations of interest.
-  * **Start oildrift simulation** brings up the OD3D oil spill model order form in the main panel.
-  * **Start shipdrift simulation** brings up the ship drift model order form in the main panel.
-  * **WMS display of drift simulations** brings up an embedded Web Mapping Service client in the main panel.
-==== To perform an oil drift forecast ====
-Look at this example of an [[kilden_oil_order|Oil drift forecast order form]]
-  - Select **Start oildrift simulation** from the main menu.
-  - Fill in the most basic information: the start and ending times of the spill, the position and depth of the source. All other parameters have default values.
-  - Fill in other information as necessary:
-      * **Oil type**: Select from the list
-      * **Simulation duration**: The simulation will stop after this period or when the forcing data runs out.
-      * **email**: n/a for Mersea user.
-      * **Description**: Please enter a unique description that is recognizable in the listing.
-  - Hit Advanced options button
-      * Select the **Ocean model**
-         * met.no is for Norwegian waters
-         * default = mercat_o4_glo
-         * mfs_16_med = MFS 1/16th degree model of Mediterranean Sea
-         * mercat_15_med = Mercator 1/15th degree model of Mediterranean Sea
-         * mercat_15_nat = Mercator 1/15th degree model of North Atlantic
-         * mercat_04_flo = Mercator 1/4th degree Global model
-      * Leave all other parameters at their default values
-  - Hit **Start** button
-==== To view an oil drift forecast ====
-The service includes a rudimentary viewing facility, which is implemented as an embedded WMS client. It is intended to serve as a backup viewing service for met.no's national clients, who normally use their own dedicated GIS to view data files delivered automatically.
-  - Select **WMS display of drift simulations** from the main menu.
-  - Open **oildrift** listing
-  - Select the desired simulation by its serial number
-  - Hit **Update** button
-This brings up the WMS client in the main panel. The basic WMS map facilities are available by using the buttons above the map area:
-  * Zoom in (by clicking once in the map or by drawing out a rectangle)
-  * Zoom out
-  * Panning
-  * Info (n/a)
-  * Original map section
-  * Previous view
-  * Next view
-  * Update view (same as main menu button)
-There is a time selector menu and increment buttons under the main menu.
-**Base layers** include lat-long lines and a toggle for displaying the oil budget text box.
-The **hirlam20.00** and **Nordic4km.00** selections show met.no's latest numerical forecast products for the atmosphere and ocean circulation. Coverage is limited to Europe and the Nordic Seas, respectively. These are in general //not// the same data that were used to force the drift model. (They will correspond to the forcing data only if met.no was selected as the Ocean model.)
-NB! The map projection is tailored to northern Europe and is fixed. The view may be distorted in other areas of the world, for example in the southern hemisphere.
-==== To perform a ship drift forecast ====
-Look at this example of an [[kilden_ship_order|Ship drift forecast order form]]
-  - Select **Start shipdrift simulation** from the main menu.
-  - Fill in the //Start position/time// section. The radius parameter specifies how to seed a cloud of particles representing the ship, and thus is a measure of the uncertainty of the given position; 10 km is a reasonable choice.
-  - Use the **Copy** button to copy the //Start position/time// information to the //End position/time// section.
-  - Fill in the ship dimensions. Two examples are given in the home page.
-  - Fill in other items as necessary:
-      * **Simulation duration**: The simulation will stop after this period or when the forcing data runs out.
-      * **email**: n/a for Mersea user.
-      * **Description**: Please enter a unique description that is recognizable in the listing.
-  - Hit Advanced options button
-      * Select the **Ocean model**
-         * met.no is for Norwegian waters
-         * default = mercat_o4_glo
-         * mfs_16_med = MFS 1/16th degree model of Mediterranean Sea
-         * mercat_15_med = Mercator 1/15th degree model of Mediterranean Sea
-         * mercat_15_nat = Mercator 1/15th degree model of North Atlantic
-         * mercat_04_flo = Mercator 1/4th degree Global model
-      * Leave all other parameters at their default values
-  - Hit **Start** button
-==== To view a ship drift forecast ====
-Similar to viewing an oil drift simulation. Just select a simulation from the list under the **shipdrift** button under the main menu.
-==== To perform a coupled ship drift - oil drift forecast ====
-[[kilden_oilship_wms|Viewing in embedded WMS client]]