1 / 25

Observed coastal ocean temperature changes in summer 2005

This study examines the observed changes in coastal ocean temperatures during the summer of 2005, specifically focusing on the Stonewall Banks Buoy SST. Analysis includes local winds, NE Pacific SLP & SST anomalies, climate indices, and a long-term perspective. Issues such as West Coast upwelling and jetstream dynamics are also discussed.

josephryan
Download Presentation

Observed coastal ocean temperature changes in summer 2005

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. Observed coastal ocean temperature changes in summer 2005 Stonewall Banks Buoy SST 18 June - 2 August 2005 17.5C on July 14 ~11C on July 20 Buoy SST plolt courtesy of Pete Lawson 20 July 2005 NOAA CoastWatch image

  2. The Atmosphere-Ocean System along the West Coast in 2005 • Local winds • NE Pacific SLP & SST anomalies • Climate Indices • Long-term perspective • Issues M. Alexander, J. Bane, N. Mantua, B. Peterson

  3. West Coast Upwelling, 2003-2005 2003: Strong upwelling along entire coast, normal spring transition Upwelling Indices 2004: Weak upwelling in spring-summer Anomalies 2005: Very late spring transition, strong fall upwelling in north

  4. 300 mb Height and Wind Anomalies Strong jetstream in spring 2005, dispaced well to the south Axis of jetstream further north in spring 1999

  5. Zonal Wind Anomaly Cross-Sections, NEP Anomalously weak westerlies at 40°-50°N in May 2005; jetstream further south. A strong jetstream further north

  6. Evolution of North Pacific SST: January-June 2004

  7. Evolution of North Pacific SST: July-December 2004

  8. Evolution of North Pacific SST: January-June 2005

  9. Evolution of North Pacific SST: July-October 2004

  10. Evolution of North Pacific SLP and Surface Winds: January-June 2004

  11. Evolution of North Pacific SLP and Surface Winds: July-December 2004

  12. Evolution of North Pacific SLP and Surface Winds: January-June 2005

  13. Evolution of North Pacific SLP and Surface Winds: July-October 2005

  14. Meridional Winds Regressed on PNA

  15. Issues/Punchlines • Was 2005 a fluke? • Is it interesting from a climate perspective?

  16. Jet-Stream Intraseasonal Oscillations and Their Impact on theOregon Coastal Upwelling Ecosystem John M. Bane University of North Carolina Chapel Hill Thanks: Tim Boyd, Sara Haines, Mike Kosro, Ricardo Letelier Murray Levine, Melanie Meaux, Elaine Monbureau Roger Samelson, Yvette Spitz Research supported by the National Science Foundation

  17. 2001 NORTHWARD WIND STRESS NEAR-SURFACE WATER TEMP 8-DAY LOW-PASS FILTERED Wind Stress (N/m2) 46050 Water Temperature (C) SERIES OF FIVE “20-DAY” OSCILLATIONS

  18. 2001 Northward Surface Stress at 46050 N-S Jet Stream Position along 125W (inverted) Stress, JS Position r = 0.61 COHERENT JET STREAM AND WIND STRESS INTRASEASONAL OSCILLATIONS

  19. 2005 Northward Surface Stress at 46050 N-S Jet Stream Position along 125W (inverted) Stress, JS Position JET STREAM INTRASEASONAL OSCILLATIONS ARE NOT COHERENT WITH STRESS AT 46050

  20. 2005 minus 2001 JET STREAM POSITIONED TO THE SOUTH UNTIL MID-JULY 2005

More Related