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How to get Horizontal Infrared Radiation Intensity or Opaque Sky Cover?

asked 2021-11-16 16:46:27 -0600

ajeb
11 ●2

updated 2022-02-19 08:05:46 -0600

__AmirRoth__

4446 ●5 ●17 http://bleedinggreenna...

I am trying to create my own EPW file for the first half of 2021.

I have all variables except for Horizontal Infrared Radiation Intensity or Opaque Sky Cover (I need at least one to complete my file).

Is there any method I can use to derive either variable? Or is there a satellite, bureau of meteorology database etc anyone is aware of that I could source this data from?

Thank you for any help you can provide.

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answered 2021-11-28 23:43:19 -0600

Joseph Yang
71 ●1 ●1

Horizontal Infrared Radiation is equivalent to 'surface thermal radiation' value available for all NWP models. If you need to look this up quickly, feel free to check out http://weatherdownloader.oikolab.com/ (disclaimer - I run this tool), based on ERA5 data from ECMWF. This should fit well under the free tier and you can download up to 6 months of data without signing up.

The parameters are named 'surface_thermal_radiation' and 'total_cloud_cover' (for the opaque sky cover).

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Thank you very much for this response! :) I will have look into this option.

I have also found NASA Power to generate hourly EPW files from as far back as the year 2000.

ajeb ( 2021-12-06 22:38:47 -0600 )edit

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Asked: 2021-11-16 16:46:27 -0600

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Last updated: Nov 28 '21

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How to get Horizontal Infrared Radiation Intensity or Opaque Sky Cover? edit