Please enter the KNMI Climate Explorer, a research tool to investigate the climate. This web site collects a lot of climate data and analysis tools. Please verify yourself that the data you use is good enough for your purpose, and report errors back. In publications the original data source should be cited, a link to a web page describing the data is always provided.

Start by selecting a class of climate data from the right-hand menu. After you have selected the time series or fields of interest, you will be able to investigate it, correlate it to other data, and generate derived data from it.

If you are new it may be helpful to study the examples.

Share and enjoy!

Some restrictions are in force, notably the possibility to define your own indices, to upload data into the Climate Explorer and to handle large datasets. If you want to use these features please log in or register.

News
05-feb-2010	Added an option to the GHCN station data selection form to restrict the search to a specified period. Note that this returns the number of stations, not the number of time series, as many stations have multiple time series before 1990.
28-jan-2010	A lot of data was accidentally deleted on my workstation today. I think I have recovered everything, please mail me if a dataset is missing or not updated.
22-jan-2010	Changed the font on the gnuplot PNG plots to DejaVu Sans Condensed.
22-jan-2010	Fixed a bug in "subtract N previous years" that gave an empty plot.
19-jan-2010	BMRC MJO indices are updated again.
13-jan-2009	Extended NCEP/NCAR 500mb bandpass-filtered variance to now, added 200mb. Results are slightly different than before due to another bandpass filter, this may change.
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