<p>The <em>Further reading</em> link brings you to <a href="http://chrs.web.uci.edu/SP_activities01.php" rel="nofollow noreferrer">The PERSIANN System Fine Resolution Precipitation Estimates Using PERSIANN-Cloud Classification System</a> which shows that the data is merged with signals coming from both geostationary and polar/near polar satellites. My guess is that it's just banding in one of these datasets (probably from that second group of satelites).</p>

<p>I tried to look at raw image data from these satellites (to illustrate my assumption), but I bump into sites that are affected by the current US government shutdown, resulting in e.g. incorrect and expired CSS certificates.</p>

<p>If you can dig up these raw images in a later stage, you'll probably be able to map the width of those bands to the aperture of the satellite.</p>

CC BY-SA 4.0
2019-01-21T09:15:17.203Z
Thanks a lot for you effort so far @Jan Doggen! that is my guess as well, that i have got the stripes in the data because of poor merging techniques applied. At the moment i am in contact with the provider of the PERSIANN-CCS data. I will keep you informed on updates! /b
ExploreR
CC BY-SA 4.0
2019-01-21T09:28:38.573Z
note: when i am just visualising the data on URL:http://chrsdata.eng.uci.edu/ I do not have these stripes.
ExploreR
CC BY-SA 4.0
2019-01-18T15:21:21.117Z
2019-01-18T15:21:21.117Z
Jan Doggen
<p>I downloaded <a href="http://chrsdata.eng.uci.edu/" rel="nofollow noreferrer">PERSIANN-CCS</a> for the region of Pawlowdar, Kazakhstan and this has stripes all over my downloaded data.<br />
For another AOI in Kazakhstan I do not have this problem. </p>

<p>Does anyone of you have any idea where these artefacts are coming from?<br />
I did not process the data at all.</p>

<p><a href="https://i.sstatic.net/USWxb.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/USWxb.png" alt="enter image description here"></a></p>

CC BY-SA 4.0
2019-01-18T14:21:17.283Z
unfortunately I am not allowed to provide a .kml-file, but with the information given this should be sufficient to reproduce the problem @Jan Doggen
ExploreR
<precipitation><remote-sensing><rainfall><earth-observation>
Artefacts in PERSIANN-CCS data
ExploreR
# Artefacts in PERSIANN-CCS data

(Asked by: username_0 on 2019-01-18)

I downloaded [PERSIANN-CCS](http://chrsdata.eng.uci.edu/) for the region of Pawlowdar, Kazakhstan and this has stripes all over my downloaded data.  
For another AOI in Kazakhstan I do not have this problem.

Does anyone of you have any idea where these artefacts are coming from?  
I did not process the data at all.

[![enter image description here](https://i.sstatic.net/USWxb.png)](https://i.sstatic.net/USWxb.png)

**Tags:** precipitation, remote-sensing, rainfall, earth-observation

> **Comments:**
> **username_0**: unfortunately I am not allowed to provide a .kml-file, but with the information given this should be sufficient to reproduce the problem @username_1  

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## 1 answers

### Answer by username_1 on 2019-01-18. Score: 2

The *Further reading* link brings you to [The PERSIANN System Fine Resolution Precipitation Estimates Using PERSIANN-Cloud Classification System](http://chrs.web.uci.edu/SP_activities01.php) which shows that the data is merged with signals coming from both geostationary and polar/near polar satellites. My guess is that it's just banding in one of these datasets (probably from that second group of satelites).

I tried to look at raw image data from these satellites (to illustrate my assumption), but I bump into sites that are affected by the current US government shutdown, resulting in e.g. incorrect and expired CSS certificates.

If you can dig up these raw images in a later stage, you'll probably be able to map the width of those bands to the aperture of the satellite.

> **Comments:**
> **username_0**: Thanks a lot for you effort so far @username_1! that is my guess as well, that i have got the stripes in the data because of poor merging techniques applied. At the moment i am in contact with the provider of the PERSIANN-CCS data. I will keep you informed on updates! /b  
> **username_0**: note: when i am just visualising the data on URL:http://chrsdata.eng.uci.edu/ I do not have these stripes.  

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