Online appendices for Mitchell, et al. The Geography of Happiness: Connecting Twitter sentiment and expression, demographics, and objective characteristics of place (2013).
[PLoS ONE, 8(5): e64417]
Daily happiness map of the United States
This map shows the location and happiness of all tweets gathered within the lower 48 US states during the past 24 hours. It updates daily at around 4pm Eastern, when @geographyofhapp announces the happiest and saddest cities from the previous day. More information here.
Daily word shifts (see here for explanation):