Michael J. Ventrice, Ph.D.
  • Home
  • CCKW/MJO
  • Hovmollers
  • Tropical Waves
  • MJO
  • Maps
  • Misc. Oscillations
  • Publications
  • Contact Me
  • Map Discussion

Tropical-Extratropical Interactions

MJO-filtered 200 hPa Velocity Potential anomalies (shaded + contours),
200 hPa Winds (magnitude only; black contours; starts at 40 m/s at 10 m/s intervals),
200 hPa irrotational winds (vectors; winds greater than 4 m/s only plotted)

Tropical-Extratropical Regional Plots

o   Maps of MJO filtered VP200 anomalies; and 200 hPa Winds
o   Analyses are updated at 0000, 0600, 1200, and 1800 UTC with a 12-hour lag
o   Negative (cold-colored contours) MJO Filtered 200 hPa VP anomalies represent upper-level divergence
o   Positive (warm-colored contours) MJO Filtered 200 hPa VP anomalies represent upper-level convergence

Latest  Analysis                        Last 7 Days      
Pacific                                           Pacific                              
Atlantic                                          Atlantic                          
Global                                           Global         

Kelvin Wave Phase Space Diagram

To construct this diagram, the GFS variables used are anomalies of (Left) Kelvin filtered 200 hPa velocity potential;  To see the variance of EOFs 1 and 2, click here.

Regional KW filtered 200 hPa VP anomalies, and 200 hPa GFS Wind anomalies

o   Maps of 200-hPa winds and Kelvin Filtered VP200 anomalies
o   Analyses are updated at 0000, 0600, 1200, and 1800 UTC with a 12-hour lag
o   Negative (cold-colored contours) Kelvin Filtered 200 hPa VP anomalies represent upper-level divergence
o   Positive (warm-colored contours) Kelvin Filtered 200 hPa VP anomalies represent upper-level convergence

Latest  Analysis                        Last 7 Days      
Pacific                                          Pacific                              
Atlantic                                         Atlantic                          
Africa                                            Africa         
Indian                                            Indian      
Global                                            Global          

Current State (200 hPa Velocity Potential)

Regional Filtered VP200 anomaly Maps                          

Latest  Analysis                                  Last 7 Days                                     
Western Hemisphere                       Western Hemisphere  
Eastern Hemisphere                         Eastern Hemisphere            
Global                                                    Global        

Kelvin Filtered Velocity Potential Time-Longitude Plots (90 Days)

o   Global time–longitude GFS VP plots
o  Unfiltered VP is shaded
o   Negative VP = Divergence
o   Kelvin Filtered  Velocity Potential Anomalies are contoured and are standardized
     CINT: 1 STD
o   The convectively active phases of all Kelvin waves are represented by the "blue dashed" lines
o   Kelvin Filtering: Wave numbers 1-14; period of 2.5-30 days; equivalent depth of 8-90m.
 
                    VP200                                                                                   VP850
20°N – 30°N            total    anom                                          20°N – 30°N            total    anom                                       
10°N – 20°N            
total    anom                                          10°N – 20°N            total    anom                                                       
Eq – 10°N               
total    anom                                           Eq – 10°N                total    anom                              
5°S – 5°N                
total    anom                                          5°S – 5°N                 total    anom                          
10°S – Eq               
total    anom                                           10°S – Eq                total    anom                             
20°S – 10°S            
total    anom                                           20°S – 10°S            total    anom                      
30°S – 20°S           
total    anom                                           30°S – 20°S            total    anom
Powered by Create your own unique website with customizable templates.