Summary (Summary adapted from the KNMI Climate Explorer web pages)
The last few years a lot of monthly mean climate data has become available for research: station data (GHCN), gridded observations of temperature and sea-level pressure (CRU) and precipitation (NCDC), and a 40-year reanalysis (NCEP/NCAR). This site gives the opportunity to explore these data and the ... relationships between them. This may lead to more insight how the climate system changes on seasonal timescales, and empirical statistical forecast models. The data are probably not good enough to explore decadal or longer trends.
The Climate Explorer system has the following structure. First you select a time series of climate data, either station data (by name or location), some climate index (e.g. NAO, NINO3), a region from a gridded field, or your own series. This data is presented, and can then be correlated with another time series, or with a field of data (gridded observations or some fields of the NCEP/NCAR reanalysis).
The outcome of the comparison is
- a plot of correlations if a field was selected (significance, slope and intercept are also available)
- a yearly cycle of the first data set and the correlation and significance if one or two time series were selected,
- a scatter plot and tercile plot if only one month or average over months was selected with a fixed lag
- a lag-correlation plot if only one month or average over months was selected with a varying lag.
- a table of correlations and significances otherwise.
Multimedia Sample
View full image Caption Description:
Warm Episode Relationships December - February and June - August
Service Citation
Originators:
Geert Jan van Oldenborgh, KNMI
Title:
KNMI Climate Explorer
Release_Date:
1999-12-22
Provider:
Koninklijk Nerderlands Meteorologisch Instituut (KNMI)
URL:
http://climexp.knmi.nl/
- On the KNMI computers Internet Explorer refuses to download raw data (.dat) and postscript (.ps.gz) files. On at least one other it works. Workaround: use Netscape; KNMI does not support IE.
- OmniWeb 2.7 has a bug that means your email address is lost when you click on the map. Workaround: fill it out by hand (right-click and modify)
Access Constraints Registration required prior to usage.
Use Constraints The following URL contains a list of features which will most likely be added in the near future:
GEERT
JAN VAN
OLDENBORGH Role:
TECHNICAL CONTACT
Phone:
+ 31 30 2206711
Fax:
+31 30 2202570
Email:
oldenborgh at knmi.nl
Contact Address:
P.O. Box 201 City:
AE De Bilt
Postal Code:
3730
Country:
NETHERLANDS
TYLER
B.
STEVENS Role:
SERF AUTHOR
Phone:
(301) 614-6898
Fax:
301-614-5268
Email:
Tyler.B.Stevens at nasa.gov
Contact Address:
NASA Goddard Space Flight Center
Global Change Master Directory City:
Greenbelt
Province or State:
MD
Postal Code:
20771
Country:
USA
Links
