This web interface allows the selection and storage of coordinate points to create a vertical atmospheric transect, a 2D slice of the atmosphere between the selected points.

The transect is made from the light blue marker to the dark blue marker. The origin is at the left side of the resulting charts.

To select the coordinates, simply drag the markers to the points of interest, the atmospheric slice will be extracted along the line joining the markers.

The actual coordinates can be entered directly on the input boxes, but once the boxes are modified they do not reflect the displacement of the markers without refreshing the page. The altitude is given for reference only.

By clicking on the "Process Transect" the coordinates are stored in a database and the WRF files are queried to produce the atmospheric slice. Data are extracted along the transect at 0.03° intervals between the selected vertical levels (default 1000 hPa to 400 hPa).

The storage key is the transect name and it will be overwritten if it is not changed. Names can be any alphabetic character, numbers or dash. The system may modify the names slightly for safety reasons (mysql injection).

By choosing the checkbox "Calculate on every model run" the transects are calculated automatically after every model run and stored in the system, so that they can be visualised without waiting additional processing time. To delete a transect, simply choose the name in the "Available transects" selection tool (below lower right corner of map) an click "Process Transect". This cannot be undone.

To avoid a potential confussion it is worth noticing that terrain profile and terrain slope are unrelated to wind barbs. Wind barbs are represented in the traditional way, with wind direction from 0° to 360° starting from due north at the top. Barbs parallel to the terrain slope dos not mean that wind follows the slope. Thus, top of the chart is north for the wind barbs and north arrow indicates the direction of north relative to terrain transect.

Processing times are between 25 seconds and over 5 minutes for a transect across the diagonal of the whole domain. Processing times are an estimation, if the last charts of the time series are missing they can be reloaded by selecting again the available transects.

All transects will be deleted after 24h unless thay are recalculated on every model run by clicking the corresponding checkbox.

Hovering over the transect with the mouse shows the location on the map and the coordinates in the box to the right of the image