Help for data selection

1. Data search

The COSYNA data portal provides a main page for data search and retrieval:

Step 2: In the left column of the portal's main page, the user can define further search criteria.	Step 1: The extent of the current map, presented in the middle column defines the spatial extent for the data search.	Step 3: Search results grouped by platform are shown in the right column.

	Step 1 (recommended): Spatial extent
	In the map, please zoom and pan to the area, which defines the spatial extent of your data query. For panning, please use the arrows or drag the map while pressing the left mouse-button. For zooming, you can use the + and - buttons in the upper left corner of the map or just draw a rectangle in the map, while pressing the <SHIFT>-key and the left mouse button.

	Step 2 (optional): Parameter category
	You can limit the listed parameters by choosing the respective category:

	Step 3 (mandatory): Parameter
	Before selecting a platform in the right column of the portal homepage, please choose a paremeter:

	Step 4 (optional): Water depth
	In order to limit your search to a certain depth layer, please choose the respective layer:

	Step 5 (recommended): Temporal extent
	To select a defined time range, please choose a start and an end date:

	Step 6 (optional): Data categories
	Finally, you can limit your search to a defined data category:

2. Data access (Map, plot and download)

The search results are listed in the right column of the main page. By clicking on a platform, the platform datasets will be listed together with their corresponding data access options.

Users can choose the following options to access or visiualise the data sources by clicking on the respective icon:

1. Visualise dataset(s) i an iteractive map
2. Create XY plots
3. Download dataset(s)
4. Download dataset(s) as ASCII files
5. Show glider data using the glider applet
6. Show metadata