- Are the t=0 forecast fields the same as the analysis fields?
 - How are data interpolated/transformed to a lower resolution grid?
 - How are Large Scale precipitation, Convective Precipitation and Snowfall defined in the ECMWF model?
 - How are low, medium and high cloud cover defined?
 - How can evaporation have both positive and negative values?
 - How can the Geopotential height in metres be calculated?
 - How to access the archived forecast data of the 06z and 18z HRES/ENS known as the High Frequency Products?
 - Is the field surface pressure available on both model and pressure levels?
 - Many fields have seconds in their units e.g. precipitation and radiation fields. How can instantaneous values be calculated?
 - Visibility Parameter
 - What are 2D wave spectra?
 - What are the definitions of the radiation fields?
 - What are the units of the fields?
 - What is the 4DVAR analysis procedure?
 - What is the direction convention for fields such as radiation and precipitation?
 - What is the direction convention for the U and V components of winds?
 - What is the direction convention for wave fields?
 - What is the land-sea mask (LSM)?
 - Where can I find the definitions of the Gaussian grids?
 - Why does accumulated precipitation has sometimes negative values?
 - Why does the Ensembles forecast not account for glaciers correctly?