Are changes needed to support a Gregorian (leap year) calendar?

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首先定位 CISM 中硬编码的 scyr 参数以及其他以 365 天为假设的地方。在 CESM 上下文中使用公历进行实验,检查平均和动力学时间步长的行为是否存在系统性错误或崩溃。完成的标准是明确风险并确定任何必要的更改。

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From @billsacks on April 8, 2016 1:25

For now this is more of a question than an issue... we can change it into an issue if it seems warranted:

Do people feel that any changes are needed for CISM to support a Gregorian (leap year) calendar? Typically CESM operates with a NOLEAP calendar, but some applications use it with a Gregorian calendar.

I'm pretty sure that CISM currently assumes a 365-day (no-leap) calendar (e.g., the scyr parameter is hard-coded to 365 days). I could imagine this possibly causing small errors both in terms of averaging quantities sent to / from the climate model, and also in terms of the number and size of the dynamics timesteps that fit within a year.

There are really two questions:

(1) Are people concerned about the small (but systematic) errors this will cause?

(2) Might the current assumptions cause any major problems, such as causing the run to crash?

This one will probably take some experimentation. I'm not sure how to test this, which is part of my motivation for filing this as an issue to come back to later.

Copied from original issue: E3SM-Project/cism-piscees#54

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