About these Weather Maps
These are generated from Grid Point Value(GPV) data provided from the Japan Meteorological Agency (JMA) calculated with "Global Spectral Model (GSM)" and "Meso Scale Model (MSM)". The GPV data are obtained from "GFD-DENNOU Club" and the drawing program is GrADS.
These weather maps are automatically generated from the GPV data which are the results of the computer simulation in JMA. So some contents may be inconsistent with the weather forecast of JMA or other weather forecasting services. And please use the data according to the fact that the results always include errors. We shall not be responsible for any loss, damages or troubles from using the data of this site.
It is forbidden to use on business. The reason is that it offends against the following requirements announced by GFD-DENNOU Club.
Here the data are provided for educational and reseach institutions. If you need the data frequently for such as business activities, please purchase from the Japan Meteorological Business Support Center (JMBSC) directly. (From the GFD-DENNOU Club's website. The original is in Japanese)
Contents of the Weather Maps
The data of "GSM, Asia" and "GSM, Japan" are provided for 4 times per one day. The initial times are 00Z, 06Z, 12Z and 18Z, i.e., 9, 15, 21 and 3 in JST.
The data of "MSM, Japan" are provided for 8 times per one day. The initial times are 00Z, 03Z, 06Z, 09Z, 12Z, 15Z, 18Z and 21Z i.e., 9, 12, 15, 18, 21, 0, 3 and 6 in JST.
| Data Type | Drawn Area | Time Interval | |
|---|---|---|---|
| GSM, Asia | Precipitation, Surface Pressure, Winds | About Lat.10° N ∼ lat.60° N About Lon.100° E ∼ lon.170° E | With 6 hours interval * The data from FT138(5 days + 18 hours after) ∼ FT264(11 days after) are provided only in the cases whose initial times are 0Z or 12Z (9JST or 21JST). |
| Low Clouds | |||
| High & Middle Clouds | |||
| Surface Temperature | |||
| 300hPa Height, Vorticity, Winds | |||
| 500hPa Height, Vorticity, Winds | |||
| 850hPa Temperature, Winds, 700hPa Vertical Velocity(hPa/s) | |||
| 500hPa Temperature, 700hPa Dew Point Depression | |||
| 500hPa Height, Temperature | |||
| 850hPa Height, Temperature | |||
| 850hPa Winds, Equivalent Potential Temperature | |||
| 925hPa Winds, Equivalent Potential Temperature | |||
| Showalter Stability Index (SSI) | |||
| GSM, Japan | Precipitation, Surface Pressure, Winds | Lat.20° N ∼ lat.50° N Lon.120° E ∼ lon.150° E | FT0 ∼ FT132(5 days + 12 hours after) with 1 hour interval FT135 ∼ FT264(11 days after) with 3 hours interval * The data from FT135(5 days + 15 hours after) ∼ FT264(11 days after) are provided only in the cases whose initial times are 0Z or 12Z (9JST or 21JST). |
| Low Clouds | |||
| High & Middle Clouds | |||
| Surface Temperature | |||
| 500hPa Height, Vorticity, Winds | FT0 ∼ FT132(5 days + 12 hours after) with 3 hours interval FT138 ∼ FT264(11 days after) with 6 hours interval* The data from FT138(5 days + 18 hours after) ∼ FT264(11 days after) are provided only in the cases whose initial times are 0Z or 12Z (9JST or 21JST). | ||
| 850hPa Temperature, Winds, 700hPa Vertical Velocity(hPa/s) | |||
| 500hPa Temperature, 700hPa Dew Point Depression | |||
| 500hPa Height, Temperature | |||
| 850hPa Height, Temperature | |||
| 850hPa Winds, Equivalent Potential Temperature | |||
| 925hPa Winds, Equivalent Potential Temperature | |||
| Showalter Stability Index (SSI) | |||
| MSM, Japan | Precipitation, Surface Pressure, Winds | Lat.22.5° N ∼ lat.47.5° N Lon.120° E ∼ lon.150° E | FT0 ∼ FT39(39 hours after, 1 day + 15 hours after) with 1 hour interval FT40 ∼ FT78(78 hours after, 3 days + 6 hours after) with 1 hour interval * The data from FT40 ∼ FT78 are provided only in the cases whose initial times are 0Z or 12Z (9JST or 21JST). |
| Low Clouds | |||
| High & Middle Clouds | |||
| Surface Temperature | |||
| 500hPa Height, Vorticity, Winds | FT0 ∼ FT39(39 hours after, 1 day + 15 hours after) with 3 hours interval FT42 ∼ FT78(78 hours after, 3 days + 6 hours after) with 3 hours interval * The data from FT42 ∼ FT78 are provided only in the cases whose initial times are 0Z or 12Z (9JST or 21JST). | ||
| 850hPa Temperature, Winds, 700hPa Vertical Velocity(hPa/s) | |||
| 500hPa Temperature, 700hPa Dew Point Depression | |||
| 500hPa Height, Temperature | |||
| 850hPa Height, Temperature | |||
| 850hPa Winds, Equivalent Potential Temperature | |||
| 925hPa Winds, Equivalent Potential Temperature | |||
| Showalter Stability Index (SSI) | |||