satpy icon indicating copy to clipboard operation
satpy copied to clipboard

Can the true_color composite method used by satpy for Himawari HSD data be applied to Himawari L1 data to generate output consistent with the HSD true_color composite?

Open snqi23 opened this issue 3 months ago • 4 comments

For example, using data like:

NC_H09_20230622_2350_R21_FLDK.02401_02401.nc

Additionally, I’ve noticed that when generating the true_color composite from HSD data, corrections for solar zenith angle, Rayleigh scattering, and green band adjustment are applied. Theoretically, these three steps should also be applicable to Himawari L1 data, right?

snqi23 avatar Sep 26 '25 05:09 snqi23

As long as the data is the same but just a different format, and provided there is a reader for it, then it should be exactly the same.

mraspaud avatar Sep 26 '25 07:09 mraspaud

只要数据相同,只是格式不同,并且只要有一个阅读器,那么它就应该完全相同。 thanks,I find it's only support ahi_l1b_gridded_bin data that I can't download the data.

snqi23 avatar Sep 26 '25 07:09 snqi23

AHi L1 data in netCDF format is not supported, all other (to my knowledge) formats of AHI data are supported, though. Can you use the native format instead, for example?

Otherwise, what is the source of the netCDF data? If we know more about the files maybe we can help...

simonrp84 avatar Sep 26 '25 07:09 simonrp84

不支持 netCDF 格式的 AHi L1 数据,但支持所有其他(据我所知)格式的 AHI 数据。例如,您可以使用本机格式代替吗?

否则,netCDF 数据的来源是什么?如果我们更多地了解这些文件,也许我们可以提供帮助......

thanks, the netCDF data generated by HSD with re-sampling to equal latitude-longitude grids is from JAXA P-Tree system (ftp.ptree.jaxa.jp). The native format is ok.

snqi23 avatar Sep 26 '25 07:09 snqi23