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​::::::: Last Update: 14 Aug 2020 :::::::
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Note:
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​ Quasi-Biennial Oscillation Map
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Analysis By: Mean of Zonal Wind, Meridional wind at 10hPa, 20hPa, 30hPa, 50hPa, 70hPa, 100hPa Levels
Computed By: Arabian Project - Data Source: ECMWF ER5 - KHALID AL-OTAIBI​
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​ Quasi-Biennial Oscillation Index
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Analysis: Zonal Winds Anomaly at 10hP​a To 100hPa [Lat -10 To 10 -  Long: 0 To 360] By PCA - Bi-variate Linear Regression [Residuals] ​​- Kernel Density.
Computed By: Arabian Project - Data Source: NOAA/ESRL Physical Sciences Division - KHALID AL-OTAIBI

1- QBO Hovmoller
QBO - Mean ​​
​Analysis Date: 14 Aug 2018 To 14 Aug 2020

2- QBO Map​

A- QBO-Mean Method 
 ::::: QBO During May 2020 :::::

B- QBO-Differences Method
​ ::::: QBO During: 17 May 2020 To 17 Jun 2020 :::::

2- QBO INDEX For QBO-PCA Method ​

A- QBO PCA Index - Scatter

Analysis Date: 14 Aug 2018 To 14 Aug 2020

​B- QBO PCA Index - Time Series

​Analysis Date: 14 Aug 2018 To 14 Aug 2020

2- QBO KERNEL DENSITY INDEX

​Analysis Date: 18 Jun 2018 To 18 Jun 2020