The "State of the Climate" Report
Each year, the State of the Climate is published as a peer-reviewed special supplement to the Bulletin of the American Meteorological Society. Over 400 scientists from 57 different countries developed the 2013 report, which provides a detailed update on global climate indicators, notable weather events and other environmental data.
Read the Full Report and see the State of the Climate in 2013 Highlights
Observing Global Surface Temperature
NOAA, NASA, the UK Met Office, and the Japan Meteorological Agency each monitor global surface temperature, separately analyze observations over the land and oceans, and then merge the datasets together to form a global analysis. While their methods may differ, all of these analyses are in close agreement that the 2013 global surface temperature ranked among the top 6 warmest years on record.
Read more on the 2013 Global Surface Temperature.
Keeping a Record of Historic Storms
Several notable weather events occurred in 2013, including Super Typhoon Haiyan in the Western North Pacific Basin. Super Typhoon Haiyan had the highest wind speed ever assigned to a tropical cyclone with one-minute sustained winds estimated to be 196 mph. The storm affected more than 16 million people and left 4 million homeless. As the deadliest storm of 2013, Haiyan killed 6,300 people; more than 1,000 are still missing.
Read more on Super Typhoon Haiyan.
Monitoring the Rise of Greenhouse Gas Concentrations
Findings in the report also reveal major greenhouse gas concentrations continued to rise in 2013, once again reaching historic highs. Atmospheric carbon dioxide concentrations reached a global average of 395.3 parts per million (ppm) for the year. At Mauna Loa, Hawaii, the daily concentration of carbon dioxide exceeded 400 ppm on May 9 for the first time since recordkeeping began there in 1958.
Read more on 2013 Greenhouse Gas Levels.
Read the BAMS Full Report