GBA Weather
It mainly shows the real-time weather of the GBA cities，including the following three functions:
· GBA Cities Weather Forecast
Displays the weather forecast of major cities in the GBA such as Guangzhou, Hong Kong, Macau, Shenzhen, Zhuhai, Foshan, Dongguan, Zhongshan, Huizhou, Jiangmen and Zhaoqing for the next 3-7 days, including weather phenomena, wind direction, maximum and minimum temperatures, etc.
· GBA Weather Warning
Displaying the warning signals for heavy rain, thunderstorms with strong winds, typhoons, hail, high temperatures, cold weather, forest fire risk, road icing, and dense fog issued by the meteorological bureaus of various districts, counties, and cities including Guangzhou, Shenzhen, Zhuhai, Foshan, Dongguan, Zhongshan, Huizhou, Jiangmen, and Zhaoqing.
· Radar echo map
Overlay the echo map of the current radar CAPPI at a height of 3 kilometers on the geographical boundaries of Guangzhou, Hong Kong, Macau, Shenzhen, Zhuhai, Foshan, Dongguan, Zhongshan, Huizhou, Jiangmen, and Zhaoqing, then set 30 kilometers (red line) and 60 kilometers (orange line) as warning lines; Simultaneously achieve animation playback of the radar echo map from the past one hour.
Maritime Silk Road
It mainly provides meteorological services for the Maritime Silk Road, including the following functions:
· Map zoom
Zoom and roam the map with mouse scrolling and dragging
· Port city
Display the weather forecast products of major ports and cities along the Maritime Silk Road for the next 7 days, including weather phenomena, wind direction, and maximum and minimum temperatures. After zooming in on the map, the next level ports and cities will be automatically displayed. Move the mouse to the port city location and the 7-day forecast product for the current port or city will be displayed in a floating window.
· Navigation Risk
Draw a schematic diagram of the route of the Maritime Silk Road on the map, and the dots appearing on the route indicate whether there is any Navigation Risk Warning at that location in the next 7 days, including:
White indicates No Risk
Yellow indicates Moderate Risk
Orange indicates High Risk
Red indicates Very High Risk
Move the mouse over the colored dots on the navigation path, and display the risk analysis results of that location in a floating window, including the latitude and longitude of the location, the risk description, as well as the time of initial risk occurrence and corresponding wind and gust information
· Real-time Weather
Display the real-time monitoring of wind direction by coastal meteorological automatic stations and offshore vessels on the map. Move the mouse to the location of the station and display information such as wind direction, temperature, precipitation, air pressure, and visibility in a floating window.
Provided the time control bar for the past 24 hours, as shown in the following figure:
Move the mouse over the time node, and the real-time monitoring data of the coastal automatic stations and ships at that time will be displayed on the map.
Numerical Model
Display the TRAMS 9-kilometer, CMA-GD 3-kilometer, TRAMS ensemble forecast, and wave model forecast products of the Guangdong Provincial Key Laboratory of Regional Numerical Weather Forecasting, including the following functions
· Map zoom
Zoom and roam the map with mouse scrolling and dragging
· TRAMS 9-kilometer mode product
(1) Grid information
| Longitude range | 81.6°E – 160.98°E |
| Latitude range | 0.8°N – 50.66°N |
| Resolution | 555 * 883, interval 0.09 |
| Forecast duration | 168 hours, every 3 hours |
(2) Product Description
| Product Name | Height | Illustrate |
| Precipitation | Surface | Unit: mm |
| 10m Wind | Surface | Unit: m/s |
| 2m Temperature | Surface | Unit: ℃ |
| 2m Relative Humidity | Surface | Unit: % |
| Sea-level Pressure | Surface | Unit: hPa |
| Wind | 1000,925,850,700,500,200 | Unit: m/s |
| T | 1000,925,850,700,500,200 | Unit: ℃ |
| Height | 1000,925,850,700,500,200 | Unit: gpm |
| Vertical Velocity | 1000,925,850,700,500,200 | Unit: m/s |
| T & Wind at 500hPa | 500 | Combination elements, consisting of temperature and wind elements at the height of 500hPa |
| T & Wind at 850hPa | 850 | Combination elements, consisting of temperature and wind elements at the height of 850hPa |
| T & Wind at 925hPa | 925 | Combination elements, consisting of temperature and wind elements at the height of 925hPa |
| Height(500hPa)&Wind(850hPa)&Precipitation | 500,850,Surface | Combination elements, consisting of potential height of 500hPa, wind elements of 850hPa and precipitation of surface |
· CMA-GD 3-kilometer mode product
(1) Grid information
| Longitude range | 105°E – 120°E |
| Latitude range | 18.01°N – 27.01°N |
| resolution | 301 * 501, interval 0.03 |
| Forecast duration | 96 hours, every 1 hour |
(2) Product Description
| Product Name | Height | Illustrate |
| Precipitation | Surface | Unit: mm |
| 10m Wind | Surface | Unit: m/s |
| 2m Temperature | Surface | Unit: ℃ |
| Sea-level Temperature | Surface | Unit: ℃ |
| 2m Maximum Temperature | Surface | Unit: ℃ |
| 2m Minimum Temperature | Surface | Unit: ℃ |
| 2m Average Temperature | Surface | Unit: ℃ |
| 2m Td | Surface | Unit: ℃ |
| Surface Pressure | Surface | Unit: hPa |
| Sea-level Pressure | Surface | Unit: hPa |
| 2m Relative Humidity | Surface | Unit: % |
| Visibility | Surface | Unit: km |
| Total Cloud Cover | Surface | Unit: 1 |
| 3km Radar Reflectivity | Surface | Unit: dBz |
| Shawalter Index | Surface | Unit: ℃ |
| K-Index | Surface | Unit: ℃ |
| Wind | 1000,925,850,700,500,200 | Unit: m/s |
| T | 1000,925,850,700,500,200 | Unit: ℃ |
| Td | 1000,925,850,700,500,200 | Unit: ℃ |
| Height | 1000,925,850,700,500,200 | Unit: gpm |
| Vertical Velocity | 1000,925,850,700,500,200 | Unit: m/s |
| T & Wind at 500hPa | 500 | Combination elements, consisting of temperature and wind elements at the height of 500hPa |
| T & Wind at 850hPa | 850 | Combination elements, consisting of temperature and wind elements at the height of 850hPa |
| T & Wind at 925hPa | 925 | Combination elements, consisting of temperature and wind elements at the height of 925hPa |
| Height(500hPa)&Wind(850hPa)&Precipitation | 500,850,Surface | Combination elements, consisting of potential height of 500hPa, wind elements of 850hPa and precipitation of surface |
· TRAMS ensemble forecast
(1) Grid information
| Longitude range | 70.9°E – 159.1°E |
| Latitude range | 1.69°N – 54.43°N |
| resolution | 587 * 981, interval 0.09 |
| Forecast duration | 120 hours, every 1 hour |
(2) Product Description
| Product Name | Height | illustrate |
| 24h Precipitation＞25mm Probability | Surface | Unit: % |
| 24h Precipitation＞50mm Probability | Surface | Unit: % |
| 24h Precipitation＞100mm Probability | Surface | Unit: % |
| 10m Wind Speed | Surface | Unit: m/s |
| 10m Wind Speed＞10.8m Probability | Surface | Unit: % |
| 10m Wind Speed＞17.2m Probability | Surface | Unit: % |
| Height at 588 & 572dagpm | 500 | Unit: gpm |
Satellite
It mainly shows the real-time weather conditions of the GBA cities, including the following functions：
· Among the infrared products
Among the infrared products, both the FY-4B infrared enhancement product and the infrared product use the 10.8 μm channel data of the FY-4B Geostationary Orbiting Radiation Imager AGRI, with differences in mapping methods, and their full disk products have a temporal resolution of 15 minutes and a spatial resolution of 4 km. The FY-2G infrared product uses the scanning radiometer of the FY-2G satellite (VISSR-II) 10.3-11.3μm channel data, and its full disk product has a time resolution of 30 minutes and a spatial resolution of 5km.
· Among the visible products
Among the visible products, the FY-4B visible products use the AGRI 0.47, 0.65 and 0.825 μm channel data of the FY-4B satellite geostationary orbit radiation imager (VISSR-II), with spatial resolutions of 1 km, 0.5 km and 1 km, respectively, and its full-disk product has a temporal resolution of 15 min. The FY-2G visible products use the scanning radiometer (VISSR-II) 0.3 to 11.3 μm channel data of the FY-2G satellite, with temporal resolutions of 30 min and 5 km for its full-disk product. VISSR-II) 0.55-0.99 μm channel data, and its full disk product has a time resolution of 30 minutes and a spatial resolution of 1.25 km.
· For the precipitation estimation product
For the precipitation estimation product, the FY-4B satellite geostationary orbit radiometer AGRI infrared and water vapor band channel data are used, with a spatial resolution of 4km and a temporal resolution of 1 hour.
· Cloud-guided wind products
Cloud-guided wind products, using FY-4B satellite geostationary orbit radiation imager AGRI 6.25, 6.95 and 7.42um band channel data, with a spatial resolution of 48km and a temporal resolution of 3 hours.
· The sea surface monitoring FY-3E sea wind product
The sea surface monitoring FY-3E sea wind product is an orbital product using FY-3E satellite wind field measurement radar WindRAD instrument data with a spatial resolution of 10km.
· The sea surface temperature anomaly product
The sea surface temperature anomaly product is a fusion of FY-4B AGRI and FY-3E satellite microwave hygrometer MWHS-II, which provides daily SST distribution in the Asia-Pacific region with a spatial resolution of 4km.
· The forest fire point product
The forest fire point product uses Himawari-9 satellite 3.9um and 11.2um channel data and is a grid point product.
Typhoon Track
Typhoon Cyclone(TC) Track is mainly divided into two parts: TC list and TC information
· TC list
The TC list defaults to displaying the code and name, Issued time, and Local release station of the nearest typhoon; You can choose to view the actual situation and predicted path of TCs released on platforms such as Beijing, Japan, Guam, Hong Kong, TRAMS 9km, ECWMF; You can choose to view historical TCs through the dropdown menu of TC names. After moving the mouse into the TC path node, a floating window of TC real-time information will be displayed, which includes information about the TC, TC intensity, release time, current location latitude and longitude, central pressure, maximum wind force, and wind field ranges of 22kt, 28kt, 34kt, 48kt, and 64kt.
· TC information
Typhoon auxiliary information includes the following functions：
(1) Current wind field
There are options for wind field of 22kt, 28kt, 34kt, 48kt, and 64kt. After selecting them, draw wind fields of different colors corresponding to the wind strength level on the map's TC path with the current publishing time node as the center
Green indicates wind field of 22kt
Blue indicates wind field of 28kt
Yellow indicates wind field of 34kt
Red indicates wind field of 48kt
Orange indicates wind field of 64kt
(2) Gale effect
There are options for wind field of 22kt, 28kt, 34kt, 48kt, and 64kt. After selecting them, draw wind fields of different colors corresponding to the wind strength level on the map's TC path with the past publishing time node as the center
Green indicates wind field of 22kt
Blue indicates wind field of 28kt
Yellow indicates wind field of 34kt
Red indicates wind field of 48kt
Orange indicates wind field of 64kt
(3) Tropical cyclone track
Including Forecast track, Potential track area, All forecast, Past track and Historical track.
There are six options for Tropical cyclone track in the Next 24-hour, 48-hour, 72-hour, 96-hour, and 120-hour, as well as None. The default selection is the Tropical cyclone track for the next 120-hour; If the expected survival time of the current TC exceeds 120 hours after selection, the Tropical cyclone track of the TC for the next 120-hour will be displayed on the map.
After selecting the Potential track area, draw a yellow semi-transparent fan-shaped forecast Potential track area on the map starting from the current issued time of the TC; The longer the forecast time, the larger the potential track area.
When All forecast is selected, all hours of the forecast track of the current TC will be plotted on the map
After selecting the Forecast track, a table of information on the TC's maximum forecast track for the next 120 hours will pop up, including Time, Longitude, Latitude, Intensity, Central pressure, Central wind, moving direction, Moving speed, and other informations.
After selecting the Past track, a table of information of the TC’s past track will pop up, including Time, Longitude, Latitude, Intensity, Central pressure, Central wind, moving direction, and Moving speed.
(4) Other information
There are 3 options: main city, warning zone, and legend：
After selecting the main city, zoom in to the 3-level map using the mouse wheel and display the names of the main cities in the coastal areas
After selecting the warning zone, a yellow dashed line warning zone and a red solid line warning zone centered on Guangdong Province will be displayed in the South China Sea area on the map
1) The yellow dashed line represents that when the TC reaches this warning line, it will affect Guangdong Province within 48 hours
2) The red solid line represents that when the TC reaches this warning line, it will affect Guangdong Province within 24 hours
After selecting the legend, a legend pop-up window will be displayed in the bottom right corner of the map to explain the TC legend; As shown in the following figure:
South China Sea Forecast
The South China Sea forecast mainly includes the display of the division of various regions in the South China Sea on the map, as well as a list of 5-Day South China Sea Weather Forecasts for each region in the South China Sea
· Map display
After moving the mouse into the corresponding area on the map, a floating window will be displayed, which will show the forecast products for the next 5 days in the current area, including Date, Weather, Wind Direction(Wind Dir), Wind Force, Wind Gust, Visibility and other weather informations.
· Forecast List
The Forecast List displays weather forecast products for the next 5 days in the South China Sea, including the Bashi Channel, Beibu Gulf, Dongsha islands, Guangdong Eastern Sea Area, Guangdong Western Sea Area, Hainan Southwestern Sea Area, Vabella, Nansha Islands, Taiwan Strait, S T.JACQUES, Xisha Islands, Zengmu Reef, Zhongsha Islands, including Weather Phenomena, Wind Direction, Wind Force, Visibility and other weather informations.
