[请教] ECMWF 风速预报误差的具体含义

在

https://www.ecmwf.int/en/forecasts/charts/catalogue/plwww_m_hr_wp_ts?facets=undefined&time=2018022300&parameter=10m%20wind%20speed

里有图片

Verification of the high-resolution forecast of surface parameters

Verification of the high-resolution forecast of surface parameters against SYNOP observations.

不太明白什么意思？

敬请赐教的问题在《ECMWF（欧洲中期天气预报中心）的预报误差》。

目前又找到了 Thomas Haiden 先生的报告

《Progress in wind forecasting in the ECMWF model》

http://www.ewea.org/events/workshops/wp-content/uploads/2015/10/EWEA-Wind-Power-Forecasting-2015-Workshop-02-01-Thomas-Haiden-ECMWF.pdf

里面的6页为：

Point forecasterrorsin Europe, 10-m wind: verification against SYNOP

还是不太明白。请问该图细节里的误差含义：

感谢！

相关链接：

[1] Thomas Haiden, PRINCIPAL SCIENTIST

https://www.ecmwf.int/en/about/who-we-are/staff-profiles/thomas-haiden#undefined

https://www.researchgate.net/profile/Thomas_Haiden

[2] Thomas Haiden, Progress in wind forecasting in the ECMWF model

http://www.ewea.org/events/workshops/wp-content/uploads/2015/10/EWEA-Wind-Power-Forecasting-2015-Workshop-02-01-Thomas-Haiden-ECMWF.pdf

[3] Verification of the high-resolution forecast of surface parameters against SYNOP observations

https://www.ecmwf.int/en/forecasts/charts/catalogue/plwww_m_hr_wp_ts?facets=undefined&time=2018062300&parameter=10m%20wind%20speed

[4] 2018-03-03，ECMWF（欧洲中期天气预报中心）的预报误差

http://blog.sciencenet.cn/blog-107667-1102078.html

[5] 2017-07-13，[请教] 当前 NWP 风速预报的典型误差是多少？

http://blog.sciencenet.cn/blog-107667-1066108.html

[6] 2016-02-29，[求助] 风力发电机的风速、风向、功率 3 个对应时间的时间序列

http://blog.sciencenet.cn/blog-107667-959494.html

感谢您的指教！

感谢您指正以上任何错误！

感谢您提供更多的相关资料！