# \[SOLVED\] Calculate trends example explanation

**URL:** <https://forum.ecmwf.int/t/solved-calculate-trends-example-explanation/1763>\
**Category:** Other - Software and tools\
**Tags:** c3s, toolbox\
**Created:** [13 September 2022 19:15 UTC](https://forum.ecmwf.int/t/solved-calculate-trends-example-explanation/1763 "2022-09-13T19:15:01Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Nathan\_Pilla](https://forum.ecmwf.int/letter_avatar_proxy/v4/letter/n/7bcc69/32.png) [@Nathan\_Pilla](https://forum.ecmwf.int/u/Nathan_Pilla)\
**Post date:** [13 September 2022 19:15 UTC](https://forum.ecmwf.int/t/solved-calculate-trends-example-explanation/1763/1 "2022-09-13T19:15:01Z")

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Hello, I apologize if this question is very simple but I am not very familiar with climate data.  
  
 Is someone able to explain what this "Calculate trends" example outputs in plain english? [https://cds.climate.copernicus.eu/toolbox/doc/gallery/31\_calculate\_trend.html](https://cds.climate.copernicus.eu/toolbox/doc/gallery/31_calculate_trend.html)

If I had to guess I would say that the map show the mean temperature change per year in degrees centigrade during the range of years provided.&nbsp;

What is confusing me is the legend is labeled "Stats trend slope (K year-1)". I did some googling but I was unable to figure out what "K year-1" means.

Any help is appreciated. Thanks

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**Author:** ![Kevin\_Marsh](https://forum.ecmwf.int/user_avatar/forum.ecmwf.int/kevin_marsh/32/368_2.png) [@Kevin\_Marsh](https://forum.ecmwf.int/u/Kevin_Marsh)\
**Post date:** [18 September 2022 08:54 UTC](https://forum.ecmwf.int/t/solved-calculate-trends-example-explanation/1763/2 "2022-09-18T08:54:35Z")

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Hi Nathan,

you are correct, it's just that the plot shows the trend (the average change) in degrees Kelvin (K) per year, rather than degrees Centigrade per year,

Hope that helps,

Kevin

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**Author:** ![Nathan\_Pilla](https://forum.ecmwf.int/letter_avatar_proxy/v4/letter/n/7bcc69/32.png) [@Nathan\_Pilla](https://forum.ecmwf.int/u/Nathan_Pilla)\
**Post date:** [19 September 2022 15:16 UTC](https://forum.ecmwf.int/t/solved-calculate-trends-example-explanation/1763/3 "2022-09-19T15:16:25Z")

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Thank you that is helpful Kevin