1 / 23

Global warming and severe weather : hurricanes

Global warming and severe weather : hurricanes. Hurricanes and global warming. More hurricanes Warming SST’s (sea surface temperatures) suggest greater source of energy for hurricanes, hence they should be more frequent. (1944-2005). SST.

hayley
Télécharger la présentation

Global warming and severe weather : hurricanes

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. Global warming and severe weather: hurricanes

  2. Hurricanes and global warming • More hurricanes • Warming SST’s (sea surface temperatures) suggest greater source of energy for hurricanes, hence they should be more frequent

  3. (1944-2005) SST N. Atlantic hurricane record best after 1944 with aircraft surveillance.

  4. Hurricanes and global warming • Fewer hurricanes • Increased wind shear • Increasing atmospheric stability

  5. La Nina Drawing

  6. El Nino Drawing/animation

  7. Southern Oscillation and global warming • ENSO not caused by global warming • ENSO is natural cycle • More El Nino conditions under global warming

  8. Source of uncertainties • Small sample size (only a few hurricanes each year)

  9. Early view of hurricane structure, 1946

  10. Radar-based hurricane tracking, 1960

  11. http://weather.unisys.com/hurricane/atlantic/index.html

  12. Source of uncertainties • Difficult to separate natural and anthropogenic influences on the conditions leading to hurricane development

  13. Source of uncertainties • Different ways to quantify hurricane activity? • Strength? • Frequency? • Duration of season? • Tracks?

More Related