Nonlinear projections (NLP) of the Arctic Oscillation (AO) index onto North American winter (December–March) 500-mb geopotential height (Z500) and surface air temperature (SAT) anomalies reveal a pronounced asymmetry in the atmospheric patterns associated with positive and negative phases of the AO. In a linear view, the Z500 anomaly field associated with positive AO resembles a positive North ...

The index theorems relate the gauge field and metric on a manifold to solution of Dirac equation it. In standard approach, operator must be massless make chirality well defined. physics, however, theorem appears as consequence chiral anomaly, which is an explicit breaking symmetry. It then natural ask if we can understand in massive fermion system does not have this review, discuss how reformul...

This analysis investigates the influence of timing Lunar New Year on January effect for Vietnam stock market. The data selected this study is a weekly series market index (VN-Index) over period from 7 th, 2009 through December 26 2018. To test presence and impact anomaly, OLS GARCH(1,1) regression models are employed. empirical findings obtained these confirm existence during in However, reveal...

We study the axial anomaly of Dirac spinors on gravitational instanton backgrounds in context nonlinear electrodynamics. In order to do so, we consider Einstein gravity minimally coupled a recently proposed conformal electrodynamics that enjoys duality transformation invariance. These symmetries allow us generalize Eguchi-Hanson configuration while preserving its geometry. then compute index no...

This research focuses on the very first step in the analysis of an image, the point at which one assumes no prior knowledge about the statistical characteristics of the pixels in the image and where little or nothing is known about the size and shape of the objects to be detected. Therefore, the only available option is to look for a point (or group of points) that deviates so much from other p...

During the early winter of 2002 and late winter of 2007, the Alaskan sector of the North Pacific Ocean region experienced record-breaking temperature anomalies. The duration of these episodes was unusually long, with each lasting more than 1 month: 55 days for the warm anomaly of October–December 2002 and 37 days for the cold anomaly of February–March 2007. Temperature departures over each resp...

* Corresponding author. ** This work is supported by the National Science Council (NSC) of Taiwan under grant NSC 98-2611-M-019-016-MY3. Abstract – A series of satellite-derived sea surface wind (SSW) and sea surface temperature (SST) images in the East China Sea (ECS) during the period from 1997 to 2001 are used to determine their interannual variability, especially the impact of the El Niño-S...

The response of the Max-Planck Institute's ECHAM3 atmospheric general circulation model (GCM) to a prescribed decade-long positive anomaly in sea-surface temperatures (SSTs) over the North Atlantic is investigated. Two 10-year realizations of the anomaly experiment are compared against a 100-year control run of the model with seasonally varying climatological SST, using a model spatial resoluti...

With the increased interest in studying the sea surface salinity anomaly (SSSA) of the tropical Indian Ocean during the Indian Ocean Dipole (IOD), an index describing the dipole variability of the SSSA has been pursued recently. In this study, we first use a regional ocean model with a high spatial resolution to produce a high-quality salinity simulation during the period from 1982 to 2014, fro...