Anomalously warm weather and acute care visits in patients with multiple sclerosis: A retrospective study of privately insured individuals in the US
Fig 1
Frequency of temperature anomalies by month and state, 2003–2017.
We designated anomalously warm weather at the county level as any month in which the average monthly temperature exceeded the long-run average for that month and county by at least 1.5°C. Temperature data were available through the ECMWF’s open-access ERA5 reanalysis. Shading intensity corresponds to the number of anomalously warm months divided by the total months of follow-up for each state between January 2003 and December 2017. ECMWF, European Centre for Medium-Range Weather Forecast.