NCEP-NCAR meteorological reanalysis composite-mean 200-hPa
geopotential height (m; black contours) and corresponding climatological anomalies for 1-2 Jan 2017 over western North America.
Teleconnections in the
geopotential height field during the Northern Hemisphere winter.
The adjustment of
geopotential height differences of the United Levelling Network was performed as a constrained adjustment linked to the datum points presented in Tables 2 and 4.
1986 'Tropical--extratropical
geopotential height teleconnections during the northern hemisphere winter' Monthly Weather Review 114, 2488-2515
Additional calculation with
geopotential height at different levels should be done.
The Arctic Oscillation signature in the wintertime
geopotential height and temperature fields.
a) Interannual variations of standardized Dec-Jan mean precipitation (blue), temperature (red) and 500-hPa
geopotential height (green) anomalies averaged over southern Africa (10[degrees]-40[degrees]E, I0[degrees]-35[degrees]S) during I948-20I6.
May 850-hPa
geopotential height (GPH) fields for years when snowmelt at BRW was (a) >5 days earlier than the 1948-2016 average [the red arrow shows the direction of airflow around the Aleutian low (AL), guided by a high pressure ridge represented by the dashed line], (b) [+ or -]4 days of average, and (c) >5 days later than average.
To examine the 500-hPa
geopotential height anomalies over the globe during the Northern Hemisphere winter, we make use of monthly data from the National Centers for Environmental Prediction (NCEP)-National Center for Atmospheric Research (NCAR) reanalysis (Kalnay et al.
a) The 500-hPa
geopotential height analysis (m, shaded contours) and 700-hPa wind (streamlines) valid at 0000 UTC 6 Aug, and (b) the 500-hPa
geopotential height analysis (shaded contours) valid at 0000 UTC 11 Aug and 5-day forecasts of 500-hPa
geopotential height for the CTRL experiment (black contours) and DAGMI experiment (red contours) valid at 0000 UTC 11 Aug.
left)
Geopotential height and (right) vector wind normalized rms error difference latitude-pressure cross sections between the control and denial experiments.
The 300-500-hPa
geopotential height contours used to define the vortex are similar to the intersection of the PV = 2 or 3 potential vorticity units (PVU; 1 PVU = [10.
