Observation system experiments for Typhoon Jangmi (200815) observed during T-PARC

Byoung Joo Jung, Hyun Mee Kim, Yeon Hee Kim, Eun Hee Jeon, Ki Hoon Kim

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

In this study, the impact of various types of observations on the track forecast of Tropical Cyclone (TC) Jangmi (200815) is examined by using the Weather Research and Forecasting (WRF) model and the corresponding three-dimensional variational (3DVAR) data assimilation system. TC Jangmi is a recurving typhoon that is observed as part of the THORPEX Pacific Asian Regional Campaign (T-PARC). Conventional observations from the Korea Meteorological Administration (KMA) and targeted dropsonde observations from the Dropwindsonde Observations for Typhoon Surveillance near the Taiwan Region (DOTSTAR) were used for a series of observation system experiments (OSEs). We found that the assimilation of observations in oceanic areas is important to analyze environmental flows (such as the North Pacific high) and to predict the recurvature of TC Jangmi. The assimilation of targeted dropsonde observations (DROP) results in a significant impact on the track forecast. Observations of ocean surface winds (QSCAT) and satellite temperature soundings (SATEM) also contribute positively to the track forecast, especially two- to three-day forecasts. The impact of sensitivity guidance such as real-time singular vectors (SVs) was evaluated in additional experiments.

Original languageEnglish
Pages (from-to)305-316
Number of pages12
JournalAsia-Pacific Journal of Atmospheric Sciences
Volume46
Issue number3
DOIs
Publication statusPublished - 2010 Aug

All Science Journal Classification (ASJC) codes

  • Atmospheric Science

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