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Tropospheric
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NO2
- global CH2O - global CO - global |
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UV
- UV index - UV dose |
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Ozone
- total column - global field - ozone bulletin - ozone profiles - tropospheric |
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Aerosol
- ADRE - aerosol index Methane - global CO2 - global Clouds - cloud info Surface - solar irradiance |
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Volcanic plume
- SO2 & AAI |
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Albedo
- climatologies Fluorescence - sun-induced |
page last modified:
14 May 2025
Frequently asked questions (FAQ)
Q: There are negative numbers in the data, what do they mean ?A: We are dealing with measurements that can become negative within the error distribution.
It depends on your application if you want to set them to zero or not.
Q: I want to use the UV index values for my app, is that allowed ?
A: Yes, on the condition that you inform on us how you use the data
and that you add some form of credits, for example:
"Copyright © KNMI/ESA; https://www.temis.nl/"
Note that we give no guarantees on data continuity.
Q: I have a great offer and want to sell something...
A: Don't bother, we do not even read your message.
Q: I want to download multiple data files, but I do not want to click on each file. Can I download these files at once ?
A: You can use a "wget" command for a single file, but you have to write a script around it, so it is complicated and
we currently don't have a solution for this.
Contact form
*** The form is disabled because of continued hacking attempts. ***
For questions you can send us an email:
| subject | name | |||
| UV data service | Jos van Geffen | geffen [at] knmi [dot] nl | ||
| albedo climatologies | Gijs Tilstra | tilstra [at] knmi [dot] nl | ||
| general and other | Ronald van der A | avander [at] knmi [dot] nl |