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发表于 2014-10-28 21:31:58
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1. What are the 'steps' for the surface daily fields in ERA Interim?
The ERA Interim Data Server surface archive has a mixture of analysis fields, forecast fields and fields available from both the analysis and forecast. The other daily archives only have analysis data.
If step = 0 is chosen, then this is analysis fields at the times 0000, 0600, 1200 and 1800 UTC. If this step is chosen then forecast only fields will not be available.
If step 3, 6, 9 or 12 is selected then the time becomes the forecast base time and only options 0000 and 1200 UTC will be available. In this case analysis only fields will not be available.
关于step的解释 |
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