如何通过GRADS获取NOAA数据?
我正在尝试从 noaa 获取一些 DAP 数据,但不知道如何将变量传递给它。我看了又看,还没有找到如何用我的浏览器浏览它。数据位于 http://nomads.ncep.noaa。 gov:9090/dods/ruc/ruc20110725/ruc_f17.info(可能会变成这篇文章发表后一段时间就过时了。)
我想使用变量 time
、latitude
和 longitude 访问
。有什么想法需要什么网址才能做到这一点吗?ugrd10m
变量
I'm trying to get some DAP data from noaa, but can't figure out how to pass variables to it. I've looked and looked and haven't found how to just poke around at it with my browser. The data is located at http://nomads.ncep.noaa.gov:9090/dods/ruc/ruc20110725/ruc_f17.info (which may become outdated some time after this post sits around.)
I want to access the ugrd10m
variable with the variables time
, latitude
, and longitude
. Any ideas what url is needed to do this?
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根据 他们的文档,听起来你想指出你的浏览器访问如下 URL:
http://nomads.ncep.noaa.gov:9090/dods/ruc/ruc20110914/ruc_f17.ascii?ugrd10m[0:1][0:1][0:1]
这将返回 ugrd10m 值的表格前两个时间/纬度/经度点:
时间/纬度/经度点的数量在 ugrd10m 的详细描述下给出数据集信息地址:
http://nomads.ncep.noaa.gov :9090/dods/ruc/ruc20110914/ruc_f17.info
表示有 19 个不同的时间值,索引为 0 到 18。在这种情况下,可以通过设置所有时间来检索完整的数据集最大值的范围:
http://nomads.ncep.noaa.gov:9090/dods/ruc/ruc20110914/ruc_f17.ascii?ugrd10m[0:18][0:226][0:427]
According to their documentation, it sounds like you want to point your browser at a URL like:
http://nomads.ncep.noaa.gov:9090/dods/ruc/ruc20110914/ruc_f17.ascii?ugrd10m[0:1][0:1][0:1]
That will return a table of the ugrd10m values for the first two time/lat/lon points:
The number of time/lat/lon points is given under the long description of ugrd10m at the dataset info address:
http://nomads.ncep.noaa.gov:9090/dods/ruc/ruc20110914/ruc_f17.info
means that there are 19 different time values, at indexes 0 to 18. In this case, the complete dataset can be retrieved by setting all the ranges to the max values:
http://nomads.ncep.noaa.gov:9090/dods/ruc/ruc20110914/ruc_f17.ascii?ugrd10m[0:18][0:226][0:427]
根据此参考,您可以通过以下 URL 访问数据:
http://nomads.ncep.noaa.gov:9090/dods/ruc/ruc20110914/ruc_00z.asc?ugrd10m&time=19&time=227&time=428
但是,我无法确认数据的有效性。
According to this reference, you can access data with this URL:
http://nomads.ncep.noaa.gov:9090/dods/ruc/ruc20110914/ruc_00z.asc?ugrd10m&time=19&time=227&time=428
However, I can't confirm the data's validity.