DPFS_Manual_Appendix-II-5
TIMES OF AVAILABILITY OF PRODUCTS WITH HIGH OPERATIONAL PRIORITY
(1) This table states, e.g. H + 5 (9) hours, within which different categories of products should normally be transmitted to the different centres. H is the time of basic observations. The first figure is the time necessary for collection of data, for processing and transmission of products in regions where telecommunication systems, processing and receiving centres make full use of modern technical equipment. The figure in brackets is applicable where the GDPFS operates under most difficult conditions.
(2) Charts of high operational priority normally mean surface and 500 hPa analyses and forecasts. High priority may also be given to other products, if based on regional requirements and agreements.
(3) Concerning forecasts, high priority is given to regional forecasts up to one or three days, and to global forecasts up to five days or even more, if these forecasts will have reached an acceptable degree of reliability.