Overview

The following forecast portal displays all sub-seasonal forecasts submitted to the AI Weather Quest. As a reminder, participants are challenged to submit quintile probabilistic forecasts of near-surface air temperature, mean sea level pressure and accumulated rainfall at a days 19 to 25, and 26 to 32 lead time. 

Latency of forecast display

Participants have four days to submit their forecasts (days 1 to 4). On day 5, all submitted forecasts are extracted and pushed to the forecast portal. In other words, forecasts initialised on a Thursday will not be viewable on the forecast portal until the succeeding Monday.

Navigating the home page

On the home page of the AI Weather Quest forecast portal, you will be able to see each product uploaded to the forecast portal. A product, characterised by a large thumbnail on the right, is defined for each variable submitted by an individual model. For instance, say I have a model called bestS2S and I submit forecasts for each of the three variables, then three products would appear.

On the left you can filter products by the chosen parameter, team name and individual models.

Navigating individual forecast products

When clicking on a forecast product, you can view all forecasts submitted to the AI Weather Quest for that individual model and variable. The title of the product is formatted as 'teamname: modelname forecast variable quintile probabilities', for example: 'bestS2S Mean sea level pressure quintile probabilities'.

On the left selection panel, you can filter the shown map by:

• Base time. Thursday initialisation date.
• Valid time. Time period that the forecast is valid for (either days 19 to 25 or 26 to 31).
• Area. Change the displayed domain which enables a focus on different regions.
• Quintile interval. Change the display of the forecasted quintile interval period. Can vary between < 20%, 20 <= x < 40%, 40 <= x < 60%, 60 <= x < 80%, x > 80%.

Additionally, to the left of each selection filter, you will see four cyan blocks. If you click on these four cyan blocks, it will open an overview of all forecasts for that selection period. For example, if you click on the cyan blocks next to the quintile interval selection, then forecasts for each of the quintile intervals will be displayed. 

Once choosing your chosen selection, the right map will display the forecast. 

There are several tools that you may chose to leverage on the map itself:

1. The arrows can switch between valid times. Please note, as we are only asking for forecasts at a week 3 and week 4 lead time, you can only switch between two maps. 
2. The colorbar can be shown by clicking on the image with lines next to it (bottom right).
3. You can view the forecast full screen by clicking on the widen-style symbol (bottom right).
4. In the top right, the share icon will enable you download a shareable link of the forecast.
5. The logo with a box and an arrow angled to the right, will enable you to download a .png or .pdf of the displayed forecast. You can also request the URL which will download the charts programmatically.

Finally, below the forecast visualisation you will find a brief description of the forecast shown. 

Acknowledgements

To write.