Great Lakes currents map

Jul 25, 2012

Using the same tech Martin Wattenberg and Fernanda Viegas created to show wind flow, the NOAA Great Lakes Environmental Research Laboratory mapped water flow in the Great Lakes, based on forecasting simulations.

The “Latest” and “3hrs Previous” visualizations depict water motion corresponding to a snapshot of lake currents at the present time and three hours previous to the present time. Lake currents can change rapidly with changing wind conditions.

Surface currents tend to follow the wind direction more closely than currents at depth. Depth-averaged currents represent the average water motion from surface to bottom and tend to follow shoreline and bottom contours.

The default map is semi-live, but you can also see flows for previous months. For example, the patterns during February 2011 are kinda cool, with a lot of swirling and well-defined currents.

2 Comments

Favorites

Visualizing the Uncertainty in Data

Data is an abstraction, and it’s impossible to encapsulate everything it represents in real life. So there is uncertainty. Here are ways to visualize the uncertainty.

Most popular porn searches, by state

We’ve seen that we can learn from what people search …

Unemployment in America, Mapped Over Time

Watch the regional changes across the country from 1990 to 2016.

Life expectancy changes

The data goes back to 1960 and up to the most current estimates for 2009. Each line represents a country.