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
17-jul-2014	Update CRU TS to 3.22 1901-2013 (thanks Harry).
03-jul-2014	Improved checking on region selection, now refuses to extrapolate (thanks Bob).
27-jun-2014	Changed undefined to zero in COADS number of observations fields (thanks Marisol).
24-jun-2014	Added UC Irvine drought maps (thanks Warwick).
24-jun-2014	Fixed a bug in my ERA-interim T2m/SST composite, due to an inconsistency between land/sea masks values of zero Kelvin were used leading to very low temperatures along coasts.
11-jun-2014	Added IPO indices based on HadSST3, HadISST1 and ERSST v3b, Stefan Brönnimann's QBO indices.
more...