Annular Modes in the Extratropical Circulation. Part I: Month-to-Month Variability*
نویسندگان
چکیده
منابع مشابه
Annular Modes in the Extratropical Circulation. Part I: Month-to-Month Variability*
The leading modes of variability of the extratropical circulation in both hemispheres are characterized by deep, zonally symmetric or ‘‘annular’’ structures, with geopotential height perturbations of opposing signs in the polar cap region and in the surrounding zonal ring centered near 458 latitude. The structure and dynamics of the Southern Hemisphere (SH) annular mode have been extensively do...
متن کاملAnnular Modes in the Extratropical Circulation. Part II: Trends*
The authors exploit the remarkable similarity between recent climate trends and the structure of the ‘‘annular modes’’ in the month-to-month variability (as described in a companion paper) to partition the trends into components linearly congruent with and linearly independent of the annular modes. The index of the Northern Hemisphere (NH) annular mode, referred to as the Arctic Oscillation (AO...
متن کاملEddies and the annular modes of climate variability
The dominant modes of month-to-month variation in the troposphere are realistically simulated in a general circulation model whose lower boundary is prescribed with realistic topography and seasonally varying, climatological sea surface temperatures. In both hemispheres, these internal modes describe a nearly zonally symmetric, NorthSouth shifting of the zonal jets as anomalous westerlies vacil...
متن کاملIntussusceptions due to trauma in a 17-month-old infant
Invagination is a kind of intestine disease in children and it is occurred between 2 upto 14 years old. This is a report of 17 months infant with intussusception due to trauma. The patient had admitted to emergency department because of motor vehicle accident and because of abdominal pain, abdominal computed tomography (CT) scan was done.
متن کاملMonth-timescale Optical Variability in the M87 Jet
A previously inconspicuous knot in the M87 jet has undergone a dramatic outburst and now exceeds the nucleus in optical and X-ray luminosity. Monitoring of M87 with the Hubble Space Telescope and Chandra X-ray Observatory during 2002-2003, has found month-timescale optical variability in both the nucleus and HST-1, a knot in the jet 0.82 from the nucleus. We discuss the behavior of the variabil...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Climate
سال: 2000
ISSN: 0894-8755,1520-0442
DOI: 10.1175/1520-0442(2000)013<1000:amitec>2.0.co;2