AOS Faculty Profile
Senior Meteorologist, Ph.D. M.I.T.
Address: 232 GFDL
Phone: (609) 452-6546
E-mail: isidoro.orlanski at noaa.gov
Cyclones and Fronts
Cyclones and fronts are the most common systems in any weather map and affect the atmospheric circulation on all scales, from local to planetary. Considerable skill has been developed to forecast these systems a few days in advance. However, in the region of large scale orography significant errors still contaminate the forecasts. Mountains partially block the flow and affects the evolution of the cyclone-frontal system. My interest is to understand and better simulate the effects of orography on those systems.
The role cyclone-scale eddies play in affecting the environment in which they developed is now considered to be of paramount importance. My research aims to understand the parameters that control the development and evolution of cyclone systems and to understand why some regimes produce violent storms and others support packets of waves that are maintained for many days. The research goal is to more accurately assess the impact of cyclone-scale eddies on the planetary scale circulation. Cyclones are the fundamental units in which the planetary circulations are shaped and modified. A better understanding of the elements that control cyclone evolution may render more accurate simulation of these systems by general circulation models used for weather forecasts. As a consequence, improving the areas of intense cyclonic activity over the planet would produce more accurate weather forecasting from weekly to seasonal timescales.
Some Recent Publications:
Solman, S A., and Isidoro Orlanski, March 2016: Climate Change over the Extratropical Southern Hemisphere: The tale from an ensemble of reanalysis datasets. Journal of Climate, 29(5), doi:10.1175/JCLI-D-15-0588.1.
Solman, S A., and Isidoro Orlanski, February 2014: Poleward shift and change of frontal activity in the Southern Hemisphere over the last 40 years. Journal of the Atmospheric Sciences, 71(2), doi:10.1175/JAS-D-13-0105.1.
Orlanski, Isidoro, September 2013: What Controls Recent Changes in the Circulation of the Southern Hemisphere: Polar Stratospheric or Equatorial Surface Temperatures? Atmospheric and Climate Sciences, 3(4), doi:10.4236/acs.2013.34052.
Orlanski, Isidoro, and S Solman, June 2010: The mutual interaction between external Rossby waves and thermal forcing: The sub-polar regions. Journal of the Atmospheric Sciences, 67(6), doi:10.1175/2010JAS3267.1.
Solman, S A., and Isidoro Orlanski, May 2010: Subpolar high anomaly preconditioning precipitation over South America. Journal of the Atmospheric Sciences, 67(5), doi:10.1175/2009JAS3309.1.