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  1. OUTLINE NWP March 2019. OUTLINE OF THE OPERATIONAL NUMERICAL WEATHER PREDICTION AT THE JAPAN METEOROLOGICAL AGENCY. March 2019. JAPAN METEOROLOGICAL AGENCY. Appendix to WMO TECHNICAL PROGRESS REPORT ON THE GLOBAL DATA-PROCESSING AND FORECASTING SYSTEM AND NUMERICAL WEATHER PREDICTION. Cover/Contents/Preface.

  2. Numerical Weather Prediction Activities. As a pioneer among Numerical Weather Prediction (NWP) centers, JMA has actively developed its suite of NWP systems since such prediction was begun in 1959. As a globally contributor to the field, the Agency today outputs a variety of NWP products to support National Meteorological and Hydrological ...

  3. Marine Warnings/Forecasts. Distribution Marine Forecasts. Climate of Japan. Oceanographic Observation. State of the Ocean Climate. Atmospheric Environment. Oceanic Carbon Cycle. Sea Waves. Around Japan / Western North Pacific.

  4. If hazardous weather conditions are expected, the Japan Meteorological Agency (JMA) issues a variety of messages including Emergency Warnings, Warnings, Advisories and Bulletins so that appropriate measures can be taken to mitigate possible disasters. These messages are issued by Local Meteorological Offices (LMOs) to their respective prefectures.

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  5. The Automated Meteorological Data Acquisition System (AMeDAS) is a collection of Automatic Weather Stations (AWSs) run by JMA for automatic observation of precipitation, wind direction/speed, temperature and humidity to support real-time monitoring of weather conditions with high temporal and spatial resolution.

  6. 日本に接近する台風は主に最盛期と衰弱期のものです。 (衛星画像は平成30年台風第21号) 発生期. 台風は赤道付近の海上で多く発生します。 海面水温が高い熱帯の海上では上昇気流が発生しやすく、この気流によって次々と発生した積乱雲(日本では夏に多く見られ、入道雲とも言います)が多数まとまって渦を形成するようになり、渦の中心付近の気圧が下がり、さらに発達して熱帯低気圧となり、風速が17 m/sを超えたものを台風と呼びます。 発達期とは、台風となってから、中心気圧が下がり勢力が最も強くなるまでの期間を言います。 暖かい海面から供給される水蒸気をエネルギー源として発達し、中心気圧はぐんぐん下がり、中心付近の風速も急激に強くなります。

  7. 2011年3月11日 · Earthquake Summary. Name: The 2011 Great East Japan Earthquake (The 2011 off the Pacific coast of Tohoku Earthquake) Date and Time: 11 March 2011 14:46 JST (05:46 UTC) Hypocenter: 38° 6.2′ N, 142° 51.6′ E (130km ESE off Oshika Peninsula) Depth 24km. Magnitude: 9.0 (the largest earthquake recorded in Japan)

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