نتایج جستجو برای: Synoptic Analysis

تعداد نتایج: 2827644  

Journal: :Meteorological Monographs 2008

2008
GREGORY J. HAKIM RYAN D. TORN

Synoptic and mesoscale meteorology underwent a revolution in the 1940s and 1950s with the widespread deployment of novel weather observations, such as the radiosonde network and the advent of weather radar. These observations provoked a rapid increase in our understanding of the structure and dynamics of the atmosphere by pioneering analysts such as Fred Sanders. The authors argue that we may b...

2010
John L. Pearce Jason Beringer Neville Nicholls Rob J. Hyndman Petteri Uotila Nigel J. Tapper

29 The influence of synoptic-scale circulations on air quality is an area of increasing interest to 30 air quality management in regards to future climate change. This study presents an analysis 31 where the dominant synoptic " types " over the region of Melbourne, Australia are determined 32 and linked to regional air quality. First, a self-organising map (SOM) is used to generate a 33 time se...

2010
F.-F. JIN

Synoptic eddy–mean flow interaction has been recognized as one of the key sources for extratropical lowfrequency variability. In this paper, the underlying dynamics of this interaction are examined from the perspective of a synoptic eddy-induced dynamic instability. To delineate this instability, a barotropic model is used that is linearized with respect to a stochastic basic flow prescribed wi...

Journal: :جغرافیا و توسعه ناحیه ای 0
مسعودیان مسعودیان محمدی محمدی

the writers of this research have studied seven variables including: precipitation, relative humidity, sunny hours, temperature average, temperature minimum, temperature maximum and sea level pressure, at sanandaj air station during 1964-1994. sanandaj air station has nearly 10966 days of complete data for these variables. a principal component analysis (pca) has been applied on this data; then...

2012
Ian Grooms K. Shafer Smith Andrew J. Majda

5 Multiscale analysis is used to derive two sets of coupled models, each based on the same distinguished limit, to represent the interaction of the midlatitude oceanic synoptic scale — where coherent features such as jets and rings form — and the mesoscale, defined by the internal deformation scale. The synoptic scale and mesoscale overlap at low and mid latitudes, and are hence synonymous in m...

2013
Valeriy Khokhlov Anna Romanova

The impact of the North Atlantic Oscillation (NAO) on synoptic conditions in Ukraine can not be considered as fully defined as the territory of Ukraine is located at the transitional boundary of processes associated with the NAO. As a rule, common methods based on the principal component analysis (PCA) can not reveal the impact of the NAO. Moreover, the analysis of synopticscale processes based...

Journal: :international journal of agricultural science, research and technology in extension and education systems 2011
a, gandomkar

the quality of pressure distribution over the atmosphere of the sea level and geopotential altitude at different atmosphere layers affect on many climate and meteorology phenomena of the earth surface. one of the important meteorology phenomenon is the occurrence of frost phenomenon especially late spring frost. in this surrey, occurring late spring frost days and minimum temperature during the...

Journal: :Archives of surgery 2012
Ilia Gur Daniel Gur James A Recabaren

HYPOTHESIS As opposed to the traditional dictated report, the use of a computer-based synoptic operative report will mandate that the surgical resident have a better understanding of all facets of the procedure. DESIGN A prospective study over a 10-month period. SETTING A 636-bed community teaching hospital. PATIENTS A total of 57 consecutive patients and 60 operative procedures for breas...

2010
Sigurd Schneider Ivan Beschastnikh Slava Chernyak Michael D. Ernst Yuriy Brun

Distributed systems are often difficult to debug and understand. A typical way of gaining insight into system behavior is by inspecting execution logs. However, manual inspection of logs is an arduous process. To support this task we developed Synoptic. Synoptic outputs a concise graph representation of logged events that captures temporal invariants mined from the log. We applied Synoptic to s...

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