This page summarizes the available historical estimates of annual average meteorological variables for nations and for two sub-regions (east and west Caribbean). Plots of annual average meteorological variables may be obtained spatially for historic years or annual time series may be plotted for selected locations.
Purple buttons are clickable and green buttons are already selected.
VIEW in the CONTROLS panel provides filters to refine your interest. As filters are changed, the Map panel shows the available data overlaying the background map. The average value for a selected year and variable is plotted (no-data is indicated with a white dot). The Select Year slider changes the year displayed.
To plot time series of annual estimates for one (or more) nations/regions. Click location (s) to select it (them), then SELECT in the CONTROLS panel will be activated listing selected locations. Click on SHOW GRAPHS.
The Cariwig portal uses a web mapping platform that allows users to investigate and interact with mapped data. This help document describes the map panel operations.
Each portal map page has the same set of map panel tools. These tools allow the user to navigate the map.
This dropdown allows the user to select their preferred base mapping. The default shows Blue Marble based aerial imagery from Osgeo.org. Currently the user can also select OpenStreetMap data as base mapping.
This panel allows the user to position the map to a specific geographical location. You can select from the dropdown or interactively type the location in the search box. Only major islands are listed in this dropdown.
The icon bar allows the user to set the map navigation mode and to navigate the map
The home button takes the user back to the default regional view
This button changes the mode to “Zoom”. To zoom into the map drag a box whilst depressing the left mouse button. Release the mouse button to zoom in.
On many configurations the mouse wheel can be used to zoom the map in and out as well.
This button allows the user to pan (move) the map. Press and hold the left mouse button whilst moving the mouse in the map panel to pan the map.
zooms the map in by a fixed amount.
zooms the map out by a fixed amount.
This button moves the map view back to the previous view if available
This button moves the map to the next view if available
A Jpeg version of the current map display can be downloaded for use in reports etc.
The show legend button shows the legend for the map. To hide the legend select hide legend
The current map coordinates of the cursor are displayed in the bottom right hand corner of the map (WGS84 Longitude/Latitude)
The Climatic Research Unit (UEA) of the University of East Anglia (UEA) has taken monthly station data for a number meteorological variables and interpolated these data to land areas of the world with a high-spatial resolution of 0.5 by 0.5 degrees latitude and longitude. The dataset describing this has the name CRU TS 3.22 and is described in Harris et al. (2014). This study updates earlier work in 1999 and 2000 and also in 2005. This work is discussed in Harris et al. (2014). Using a high-resolution map of national boundaries from the United Nations, the high-resolution spatial data have additionally been averaged to countries and territories that are in the UN list.
Diurnal Temperature Range
Daily Temperature Minimum
Daily Temperature Mean
Daily Temperature Maximum
Proportion of Dry Days
Additionally, Potential evapotranspiration has been calculated (see details in Harris et al. 2014).