ClimateERA.jl supports both data downloads and analysis.  However, some parameters (such as
meridional streamfunction) are not provided and must be calculated.

To download ECMWF reanalysis data, please specify the actionID (aID) in erastartup using:
    - erastartup(aID=1)

To analyse ECMWF reanalysis data, please specify the actionID (aID) in erastartup using:
    - erastartup(aID=2)

To query if a variable (defined by a parID - see epartemplate.txt for examples) is
available for download, or if it must be calculated instead, please use:
    - queryeaction(parID="parameterID string here")
    - e.g. queryeaction(parID="t_sfc")
