This website is the first one to map live data from more than 100 sensors at sea (North Atlantic).

Easy display for mobile phones: light homepage, compressed images, mobile-friendly LOOP function: move the map to your region and just click to loop over time on the same region!


Get access to the charts from the last 60 days

07/11/2019   NEW! Terms of use were updated. See the legal notice.
19/08/2019   NEW! 24-hr pressure change for the Eastern US. Go!
15/07/2019   NEW! Wind speed charts available for the land!
22/06/2019   More from our tweets: Full-size animation of the North Atlantic dewpoint from 19 Jun to 22 Jun, hourly step (GIF, 73M)

North Atlantic⇩     Europe⇩     USA/Can. East⇩     USA/Can. West⇩

Added value of the MeteoceanOnline sea-level pressure reconstruction (near real time, labels H+0...H-2 on the website) over GFS real-time solutions (short-term forecasts), computed as the innovation towards observations. The control solution (black) is a 4DVAR analysis (ARPEGE, delayed availability). Innovation is a skill score normalized by the signal amplitude in order to quantify a graphical skill (and not energy). This test is based on stations of the North Atlantic ocean away from the Greenland and Newfoundland neighborhoods. Quality of the MOO reconstruction depends on a total number of sensors at sea large enough. Missing real-time reconstructions were compensated on this graph by simulating offline the "real-time mode". Reconstructions on the website with labels H-3...H-9 are usually an improved reconstruction but farther from the real-time mode and not included in this graph.

North Atlantic

SST  Daily signal  D-1 D-2  Seasonal signal D-1 D-2

SST tendency    Daily signal D-1 D-2  Seasonal signal D-1 D-2

Europe 1

USA/Canada East

USA/Canada West (experimental)

Diagnostics are value-added products mainly based on the real-time observation data.
Data is high quality from the real-time global observation network where most of the spurious records have been filtered out.
Data density and diagnosis quality of each date increase with time due to regular updates.

Get access to the charts from the last 60 days

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