Http www jma go jp jmh jmhmenu html

Outline of dissemination and distribution service

JMA mainly distributes Himawari-8/9 data in two ways. One is the HimawariCast service, by which primary sets of imagery are disseminated as operational meteorological services via a commercial communication satellite. The other is the HimawariCloud service, by which full sets of imagery are delivered to National Meteorological and Hydrological Services (NMHSs) via a private Internet cloud service. JMA also distributes Himawari-8/9 data to NMHSs via JDDS (the JMA Data Dissemination System) and, in conjunction with four other Japanese institutions, provides Himawari-8/9 data distribution/archive services for research, development and education purposes. JMA provides Himawari-8/9 data to the private sector and other communities via the Japan Meteorological Business Support Center (JMBSC).

HimawariCast service

JMA started the HimawariCast service on 29 January 2015. Himawari imagery in full-disk HRIT/LRIT files is compatible with previous MTSAT HRIT/LRIT data. Files are provided every 10 minutes, and the number of bands for HRIT files is 14 out of Himawari-8/9’s 16. These multi-band high-frequency observation data support the timely creation of RGB products and are expected to contribute to disaster risk reduction in the East Asia and Western Pacific regions.

JMA also disseminates meteorological data and products in Satellite Animation and Interactive Diagnosis (SATAID) format, including numerical weather prediction products and observational data. The Agency’s SATAID software enables the superimposition of these data and products onto satellite imagery.

Up-to-date information, including specifications of equipment needed to receive data via HimawariCast, is available at: https://www.data.jma.go.jp/mscweb/en/himawari89/himawari_cast/himawari_cast.php

Japan Meteorological Business Support Center (JMBSC) service

JMA provides a variety of meteorological information and products, including Himawari-8/9 data, To the private sector and other communities via the Japan Meteorological Business Support Center (JMBSC; a general incorporated foundation designated by the Director-General of JMA).

Distribution Service for research, development and education

The following four Japanese institutions operate Himawari-8/9 data archiving and redistribution services on a best-effort basis for research, development and education:

Users must register to download data from each institution and observe the individual data usage policies.

HimawariCloud (For NMHSs)

JMA launched the HimawariCloud service on 8 April 2015 with the distribution of Himawari-8 in-orbit-test imagery for NMHSs in the Himawari-8/9 coverage area.

Himawari Standard Data are used as master data from all 16 bands with the finest spatial resolution to create all products related to Himawari-8/9. True-color images composed of data from three visible bands are provided in Portable Network Graphics (PNG) format. In addition, images of Target Areas observation in Network Common Data Form (NetCDF) are also created and distributed.

NMHSs in the Himawari-8/9 coverage area can access HimawariCloud and retrieve data using an HTTP 1.1 client such as a Web browser or Wget. A minimum of 20 Mbps throughput between HimawariCloud and the user client is needed to download all data provided via the HimawariCloud service. It should be noted that HimawariCloud is not a data archive service. Data can be downloaded for 72 hours after receipt by the HimawariCloud server, and are then deleted.

The following web page provides technical information on how to access/download data and other matters via HimawariCloud:

Himawari JDDS (For NMHSs)

Himawari-8/9 imagery and geophysical products are provided via the JMA Data Dissemination System (JDDS). Satellite imagery and products such as High-resolution Cloud Analysis Information (HCAI) are provided via the Himawari JDDS.

The following web page provides the information of distribution via JDDS:

WIS-portal (For NMHSs)

The WIS-portal service provides the SATellite Animation and Interactive Diagnosis (SATAID) application and Himawari-8/9 data in SATAID format. SATAID enables the visualization and manipulation of satellite imagery, NWP (numerical weather prediction) products, observation results and data. The service allows NMHS users to download 10-minute interval data from Himawari-8/9 observation.

The following web page provides the information of WIS-portal:

Himawari Real-Time Image

Himawari Real-Time Image is a web-based service providing RGB composite imagery and the Heavy Rainfall Potential Areas product. RGB composite imagery can be easily created by overlapping and displaying color satellite images to present information from several satellite channels. Heavy Rainfall Potential Areas is a satellite product in image form providing information on the potential for rainfall associated with deep convective clouds. The service is provided via http://www.data.jma.go.jp/mscweb/data/himawari/index.html.

The following web page provides the service:

Satellite Program Division, Japan Meteorological Agency
E-mail: metsat AT met.kishou.go.jp

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Http www jma go jp jmh jmhmenu html

Site Map

Warnings/Advisories

Earthquakes and Volcanoes

Weather Forecasts and Analysis

• Daily Forecasts
• Distribution/Three-hourly Forecasts
• One-week Forecasts
• Marine Forecasts
• Two-week Temperature Forecast
• Early Warning Information on Extreme Weather
• Seasonal Forecasts
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• Analysis & Forecasts of Precipitation
• Radar & Nowcasts (Precipitation, Thunder and Tornados)
• High-resolution Precipitation Nowcasts
• Aeolian Dust Observation/Prediction
• UV Index

Latest Weather

Climate and Ocean

JMA’s Major International Roles

• GISC Tokyo
• RSMC Tokyo — Typhoon Center
• Regional Telecommunication Hub (RTH) Tokyo
• Tokyo Climate Center (TCC)
• World Data Centre for Greenhouse Gases (WDCGG)
• Quality Assurance/Science Activity Centre (QA/SAC) for Asia and the South-West Pacific
• GAW World Calibration Centre (WCC) for Methane in Asia and the South-West Pacific / Regional Dobson Calibration Centre (RDCC) for Asia
• Tokyo Volcanic Ash Advisory Center (VAAC)
• Regional Instrument Centre Tsukuba for RA-II (RIC Tsukuba)
• Meteorological Satellites
• Meteorological Satellite Center
• Numerical Weather Prediction System
• Northwest Pacific Tsunami Advisory Center

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Weather Maps

• Analysis Chart (PDF)

WWJP27 RJTD 070000
WARNING AND SUMMARY 070000.
WARNING VALID 080000.
WARNING IS UPDATED EVERY 6 HOURS.
GALE WARNING.
DEVELOPING LOW 1004 HPA
AT 48N 155E SEA AROUND KURILS MOVING EAST 45 KNOTS.
WARM FRONT FROM 48N 155E TO 48N 159E 46N 163E.
COLD FRONT FROM 48N 155E TO 47N 148E 46N 142E 43N 135E 42N 130E.
WINDS 30 TO 35 KNOTS WITHIN 400 MILES OF LOW SOUTHWEST SEMICIRCLE AND
300 MILES ELSEWHERE.
EXPECTED WINDS 30 TO 35 KNOTS WITHIN 400 MILES OF LOW SOUTHWEST
SEMICIRCLE AND 300 MILES ELSEWHERE FOR NEXT 18 HOURS.
GALE WARNING.
NORTHERLY WINDS 30 TO 35 KNOTS
EXPECTED WINDS 30 TO 35 KNOTS FOR NEXT 18 HOURS
PREVAILING OVER WATERS BOUNDED BY 33N 173E 41N 175E 42N 180E 30N 180E
33N 173E.
GALE WARNING.
DEVELOPING LOW 1006 HPA
AT 47N 135E MARITIME TERRITORY MOVING EAST 30 KNOTS.
EXPECTED WINDS 30 TO 35 KNOTS WITHIN 800 MILES OF LOW SOUTHWEST
SEMICIRCLE AND 500 MILES ELSEWHERE WITHIN NEXT 24 HOURS.
GALE WARNING.
EXPECTED NORTHERLY TO NORTHEASTERLY WINDS 30 TO 35 KNOTS WITHIN NEXT
18 HOURS
PREVAILING OVER WATERS BOUNDED BY 26N 126E 22N 121E 20N 118E 23N 116E
25N 119E 28N 121E 26N 126E.
WARNING.
DENSE FOG OBSERVED LOCALLY OVER SEA OF OKHOTSK NORTHERN PART OF SEA
OF JAPAN.
WARNING.
DENSE FOG OBSERVED LOCALLY OVER WATERS BOUNDED BY 41N 147E 45N 147E
47N 152E 55N 162E 60N 163E 60N 180E 48N 180E 38N 161E 34N 152E 34N
148E 40N 150E 41N 147E.
SUMMARY.
LOW 998 HPA AT 59N 151E ALMOST STATIONARY.
LOW 998 HPA AT 58N 167E ENE 10 KT.
TROPICAL DEPRESSION 1008 HPA AT 11N 128E WEST SLOWLY.
HIGH 1024 HPA AT 34N 161E EAST 15 KT.
STATIONARY FRONT FROM 25N 121E TO 28N 125E 32N 132E 32N 135E 32N
139E.
REMARKS.
TROPICAL STORM 2020 ATSANI (2020) 1002 HPA AT 22.6N 119.5E : SEE
TROPICAL CYCLONE WARNING.

JAPAN METEOROLOGICAL AGENCY.=

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Outline of Himawari-8/9

The Himawari-8/9 Geostationary Meteorological Satellites

Both of JMA’s Himawari-8/9 geostationary meteorological satellites (the successors to the MTSAT series) are equipped with highly improved Advanced Himawari Imagers (AHIs). JMA aims to establish a stable and continuous satellite observation system with redundancy based on twin satellite operation involving Himawari-8 and -9, which is expected to contribute to disaster risk reduction in Asia and the western Pacific until 2029.

Missions of Meteorological Satellites

The most valuable function of meteorological satellites is their ability to monitor atmospheric phenomena globally and uniformly over various areas such as seas, deserts and mountains where surface-based observation is difficult. World Weather Watch (WWW; a core World Meteorological Organization (WMO) program) is supported by multiple geostationary and polar-orbiting meteorological satellites that form space-based observation networks, and the satellite missions JMA started in 1978 have long contributed to the program for the East Asia and Western Pacific region. With their new sensors, Himawari-8/9 will further support and lead to the improvement of meteorological services in a variety of fields including weather forecasting, climate monitoring, natural disaster prevention and safe transportation.

Launch and operational schedule of Himawari-8/9

Himawari-8 was launched and entered operation at 2:00 UTC on 7 July 2015. This was followed on 2 November 2016 by the launch of Himawari-9 which started backup operation in March 2017. Both satellites are scheduled to operate until 2029. Himawari-8 was chiefly used for observation during the early part of this period, with Himawari-9 in a back-up role. Their operation has been switched on 13 December 2022 to place Himawari-9 in the main observational role with Himawari-8 as back-up.

Observation by Himawari-8/9

Himawari-8/9’s AHIs have 16 observation bands (3 for visible, 3 for near-infrared and 10 for infrared). The observation bands of the satellites will facilitate understanding of cloud conditions. Additionally, the time interval of full-disk observations is 10 minutes for Himawari-8/9. Along with such observation, Himawari-8/9 also observe certain areas so frequently that the whole of Japan is covered in with 2.5 minutes intervals. The spatial resolutions of Himawari-8/9 are 0.5 – 1 km for visible bands and 1 – 2 km for near-infrared and infrared bands.

Improvement of data utilization

The enhanced observation functions of the satellites are expected to support unprecedented levels of precision in monitoring for the movement of tropical cyclones and clouds bringing heavy local rain. It is also possible to observe the distribution of volcanic ash and aerosols with high accuracy. Data derived from Himawari-8/9 is used for cloud imagery, and utilized in numerical weather prediction and related fields based on calculation to estimate values such as temperature and wind direction/speed in the upper atmosphere.

How the Imager (AHI) works

The imager scans the earth by moving internal scanning mirrors in the east-west direction starting from the north. During the 10 minutes it takes to scan the full disk, the unit also scans a limited target region such as the area around Japan by changing the direction of the mirrors. Light gathered by the mirrors is dispersed into 16 wavebands before being converted into electrical signals by detectors for each band, and the signals are in turn transmitted to ground stations.

Operation of Himawari-8/9

Himawari-8/9 and their ground stations are operated by a company established under JMA’s Private Finance Initiative (PFI) project. The company receives data from Himawari-8/9 and controls the satellites using antennas and other equipment.

Satellite Program Division, Japan Meteorological Agency
E-mail: metsat AT met.kishou.go.jp

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