pp. 1323-1335
S&M2894 Research Paper of Special Issue https://doi.org/10.18494/SAM3602 Published: April 4, 2022 Effect of North Pacific Storm Track on Winter Temperature in China [PDF] Hong-Yang Tseng, Wei-Jun Zhu, Chun-Juan Qi, and Shyang-Yuh Wang (Received August 27, 2021; Accepted February 21, 2022) Keywords: North Pacific storm track, weather forecasting, diagnosis, transient eddy dynamic forcing
Meteorological analysis and weather forecasting mainly rely on three essential elements, namely, data gathering, computing power, and theoretical solutions. The acquisition of data depends on various sensors and instruments. In this research, we utilized the singular value decomposition (SVD) analysis to analyze the data collected by the National Meteorological Information Center and the National Center for Environmental Prediction/National Center for Atmospheric Research (NCEP/NCAR) on the North Pacific storm track and winter temperature anomalies in China on the interannual scale. The results showed that the intensity change of the storm track was significantly and positively correlated with the temperature in most areas of China in winter. We also found that when the storm track weakens (strengthens), the winter temperature in China is generally lower (higher). Moreover, regression and composite analyses showed that the dynamic forcing along the storm track was important for the formation and maintenance of the atmospheric circulation. In addition, when the North Pacific storm track weakens (strengthens), the dynamic forcing of transient eddy is conducive to the maintenance of the positive (negative) phase of West Pacific (WP) teleconnection and leads to the deepening (filling) and southward (northward) movement of the East Asian trough and the strengthening (weakening) of the Siberia High and Aleutian Low. The forcing of transient eddy on the westerly flow tends to strengthen (weaken) the subtropical jet and weaken (strengthen) the westerly flow on the north side of the subtropical jet over the North Pacific. The anomalous centers of atmospheric circulation induced by the transient eddy are basically the same as that of the actual atmospheric circulation, which are conducive to the strengthening (weakening) of the winter monsoon, leading to a wide range of low-temperature weather in China.
Corresponding author: Shyang-Yuh WangThis work is licensed under a Creative Commons Attribution 4.0 International License. Cite this article Hong-Yang Tseng, Wei-Jun Zhu, Chun-Juan Qi, and Shyang-Yuh Wang, Effect of North Pacific Storm Track on Winter Temperature in China, Sens. Mater., Vol. 34, No. 4, 2022, p. 1323-1335. |