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HOME > World Climate > ClimatView > Outline of ClimatView


Outline of ClimatView

    The ClimatView tool enables viewing and downloading of monthly world climate data, giving users access to statistics on monthly mean temperatures, monthly total precipitation amounts and related anomalies or ratios for all stations where such data are available. Statistics on monthly means of daily maximum/minimum temperatures are also provided. These data are derived from CLIMAT messages reported via the GTS line from WMO Members around the world.
   Data are available for the period since June 1982, when JMA started receiving CLIMAT messages. Current data are from the previous month or the month before it, and are usually updated around the 10th of each month. CLIMAT data received at the German Meteorological Service (Deutscher Wetterdienst; DWD) are also included in the database. Since 1999, JMA and DWD have jointly operated the GCOS Surface Network Monitoring Centre (http://www.gsnmc.dwd.de/) and exchanged CLIMAT data. Statistics on climatological normals for monthly mean temperature and monthly total precipitation are based on the period 1981 - 2010. The data sources for the normals are CLIMAT messages received by JMA and GHCN data distributed by NOAA's National Climatic Data Center (NCDC; http://www.ncdc.noaa.gov/ghcnm/v2.php).

notice  Notes for users

Using ClimatView


1. Distribution map
  • On the distribution map, temperature and precipitation data for each station are displayed as colored round marks for selected areas. A color legend is shown on the right.
  • Hover over a station on the distribution map to show data on the chosen element and the name of the station in a pop-up balloon.
  • Use the drop-down lists and radio button at the top of the page to change the region, element, year/month and map resolution.
  • Click the [ < ] and [ << ] buttons to go back 1 month and 1 year, respectively. Click the [ > ] and [ >> ] buttons to go forward 1 month and 1 year, respectively.
  • Click the "Show" button to reflect elements selected via the drop-down lists and radio button.
  • Drag the scroll bars on the right side and the bottom of the map to adjust the display area.
  • Click the "Printable" button to display a figure in a new window for printing.
  • Select "Low" for the map resolution if map drawing takes a long time due to a slow connection.
Outline of a distribution map
  • Click the buttons on the zoom bar on the left to zoom in/out of the map.
  • The red mark between the zoom bar buttons shows the degree of zoom (a higher position indicates a larger map).
  • The white buttons on the bar can also be clicked to zoom in/out.
Outline of zoom

2. Historical graphs and data lists for individual stations
  • Click a station on the distribution map to display a time-series graph covering a period of two years.
  • Change the period of the graph as desired by selecting from the "Term" list (1 year, 2 years, 5 years or all years).
  • Data used for the graph are listed below it, and can be downloaded in comma-separated value (csv) format by clicking the "Download" button.
Outline of historical graphs and data lists

3. Data lists for individual regions
  • A data list for all stations in the selected region can be displayed by clicking the "Data list" button on the distribution map.
  • If "World" is selected as the region, Asia/Siberia stations are displayed for the data list in place of all stations worldwide.
  • If "Normal" is selected as an element on the distribution map, normal values are displayed in the data list.
  • Click a station name in the list to show a time-series graph and data for the station. For details, see "2. Historical graphs and data lists for individual stations."
  • The region and year/month can be changed via the form options at the top of the page.
Outline of data lists for individual regions

Revision history

Revision dateInformation
30 Jan. 2014
  • Complete revision of ClimatView for plug-in-free compatibility with Web browsers such as Firefox and Google Chrome in addition to Internet Explorer.
  • Display of precipitation ratios displayed as integers rather than as numbers rounded to one decimal place.

Tokyo Climate Center, Climate Prediction Division, 1-3-4 Otemachi, Chiyoda-ku, Tokyo, Japan.
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