1 / 19

Hurricanes and Climate Change: What do the Observations Show?

Hurricanes and Climate Change: What do the Observations Show?. 25 April 2012. Chris Landsea, National Hurricane Center, Miami, USA Chris.Landsea@noaa.gov. How is global warming affecting: Tropical cyclone frequency, intensity, genesis, track, and overall activity?.

tahir
Download Presentation

Hurricanes and Climate Change: What do the Observations Show?

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Hurricanes and Climate Change: What do the Observations Show? 25 April 2012 Chris Landsea, National Hurricane Center, Miami, USA Chris.Landsea@noaa.gov

  2. How is global warming affecting: Tropical cyclone frequency, intensity, genesis, track, and overall activity?

  3. A Typical Day in 2012 – Marine Data Available around 12 UTC

  4. A Typical Day in 2008 –Marine Data Available around 12 UTC

  5. A Typical Day in 1912 – Marine Data Available around 12 UTC

  6. A Typical Day in 1911 – Marine Data Available around 12 UTC

  7. Tropical Storm and Hurricane Numbers – A Very Large Trend over a Century 12 7

  8. 2007 Hurricane Season - 15 Tropical Storms & Hurricanes… …9 of which were very short-lived (< 36 hr)

  9. New Tools and Technologies ~ Additional TCs lately? Hart’s Cyclone Phase Space Analyses Quikscat Surface Vectors AMSU Tropospheric Temperatures

  10. Big Upward Trend – Consistent with Technological Improvements

  11. Tropical Storm and Hurricane Numbers – A Very Large Trend over a Century 12 7

  12. Tropical Storm and Hurricane Numbers - Trend Nearly Gone after Removal of Very Short-Lived Cyclones 8 7

  13. Atlantic ship traffic changes Vecchi and Knutson (2008)

  14. Estimated Number of “Missed” Tropical Storms and Hurricanes of Medium to Long Duration 2-3 per year in 1880s 1-2 per year in 1900s <1 per year in 1950s

  15. Tropical Storm and Hurricane Numbers – A Very Large Trend over a Century 12 7

  16. Tropical Storm and Hurricane Numbers - Trend Nearly Gone after Removal of Very Short-Lived Cyclones 8 7

  17. Tropical Storm and Hurricane Numbers – Upward Trend Gone After Adding in “Missed” and Removing Very Short-Lived Cyclones 9 8 Landsea et al. (2010, Journal of Climate)

More Related