Steven M. Cavallo

 

Real-time animations






Tropopause maps: Past 10 days - 10 day forecast

Dynamic tropopause (2 PVU surface) plots from 0.5 degree GFS analyses over the past 10 days, and 0.5 degree GFS forecasts over the next 10 days. Magenta `+' symbols denote locations of upper-air observations at any time since 1 January 2014.
Tropopause Field
Northern Hemis. Arctic zoom Southern Hemis.
Potential temperature
Colors with 1 K interval, sea level pressure with contour interval of 4 hPa up to 996 hPa (1004 hPa) in Northern Hemisphere (Southern Hemisphere)
X
X
X
Potential temperature anomalies
Standardized anomalies (colors, interval of 0.5 standard deviations) and sea level pressure (contours, 4 hPa interval up to 996 hPa). Anomalies are with respect to 1981-2010 climatological mean.
X
Potential temperature ensemble forecast
GEFS ensemble spread in tropopause potential temperature (colors, 0.1 K interval) and tropopause potential temperature of control (contours, 5 K interval) from latest 00/12 UTC forecast.
X
Potential temperature and sea ice
Near-real-time DMSP SSM/I-SSMIS daily polar gridded sea ice concentration (colors, fraction between 0 and 1), GFS tropopause potential temperature (black contours, 5 K interval) and GFS sea level pressure (green contours, 4 hPa interval)
X
d[Potential temperature forecast]/dt
0-7 day forecast trends valid at analysis time and various forecast times. Colors with 1 K interval, sea level pressure with contour interval of 4 hPa up to 996 hPa (1004 hPa) in Northern Hemisphere (Southern Hemisphere)
V000
V024
V048
V072
V096
V120
V144
V168
V000
V024
V048
V072
V096
V120
V144
V168
Pressure
Colors, 10 hPa interval
X
Jet stream
Wind magnitude (colors, 1 m s-1 interval)
X

Other diagnostics. Past 7 days - 7 day forecast

Plots from 0.5 degree GFS analyses over the past 7 days, and 0.5 degree GFS forecasts over the next 7 days.
1000-500 hPa thickness, 500 hPa absolute vorticity
Absolute vertical vorticity (color interval of 1 x 10-5 s-1), 1000-500 hPa thickness (contour interval 60 m)
X
Hovmoller
Meridional wind on tropopause, averaged from 30-60 degrees latitude
X
X
X


Related Links

Useful weather links
Greg Hakim's tropopause maps over the past week
ECMWF Arctic vortex and tropopause maps (Andreas Dornbrack)
Free University of Berlin Institute of Meteorology
Visualization of tropopause maps





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