![Page 1: Upper Ocean Response and Feedback to 2002 Hurricanes Isidore and Lili in Tandem](https://reader036.vdocuments.us/reader036/viewer/2022062517/56813373550346895d9a8787/html5/thumbnails/1.jpg)
Upper Ocean Response and Feedback to 2002 Hurricanes Isidore and Lili in Tandem
Wei ZhaoShuyi S. Chen and Joseph Tenerelli
Rosenstiel School of Marine and Atmospheric ScienceUniversity of Miami
![Page 2: Upper Ocean Response and Feedback to 2002 Hurricanes Isidore and Lili in Tandem](https://reader036.vdocuments.us/reader036/viewer/2022062517/56813373550346895d9a8787/html5/thumbnails/2.jpg)
Hurricanes Isidore and Lili (2002) in tandem
![Page 3: Upper Ocean Response and Feedback to 2002 Hurricanes Isidore and Lili in Tandem](https://reader036.vdocuments.us/reader036/viewer/2022062517/56813373550346895d9a8787/html5/thumbnails/3.jpg)
Objectives
To examine the upper ocean circulation in response to Hurricanes Isidore and Lili in tandem.
To assess potential feedback to the atmosphere by the complex oceanic features in the Gulf of Mexico.
![Page 4: Upper Ocean Response and Feedback to 2002 Hurricanes Isidore and Lili in Tandem](https://reader036.vdocuments.us/reader036/viewer/2022062517/56813373550346895d9a8787/html5/thumbnails/4.jpg)
Ocean Circulation in Gulf of Mexico
William J. Schmitz Jr. (2003)
mean
maximum
minimum
Propagation path
![Page 5: Upper Ocean Response and Feedback to 2002 Hurricanes Isidore and Lili in Tandem](https://reader036.vdocuments.us/reader036/viewer/2022062517/56813373550346895d9a8787/html5/thumbnails/5.jpg)
Hybrid Coordinate Ocean Model (HYCOM)
• one-way nested Western Atlantic-Gulf of Mexico-Caribbean Sea regional domain (with data assimilation of SSH and SST prior to hurricane simulations)
• 0.08 degree grid spacing• 22 Vertical layer, 4-6 layers in mixed layer with the
1st layer at 3 meter • MM5 atmospheric forcing, 18 August – 17 October
2002 (Hurricanes Isidore and Lili)
![Page 6: Upper Ocean Response and Feedback to 2002 Hurricanes Isidore and Lili in Tandem](https://reader036.vdocuments.us/reader036/viewer/2022062517/56813373550346895d9a8787/html5/thumbnails/6.jpg)
Hurricane Isidore Hurricane Lili
![Page 7: Upper Ocean Response and Feedback to 2002 Hurricanes Isidore and Lili in Tandem](https://reader036.vdocuments.us/reader036/viewer/2022062517/56813373550346895d9a8787/html5/thumbnails/7.jpg)
SSHA (satellite)
SST/SSC (HYCOM)
Pre-Isidore
![Page 8: Upper Ocean Response and Feedback to 2002 Hurricanes Isidore and Lili in Tandem](https://reader036.vdocuments.us/reader036/viewer/2022062517/56813373550346895d9a8787/html5/thumbnails/8.jpg)
![Page 9: Upper Ocean Response and Feedback to 2002 Hurricanes Isidore and Lili in Tandem](https://reader036.vdocuments.us/reader036/viewer/2022062517/56813373550346895d9a8787/html5/thumbnails/9.jpg)
Satellite
SST pre- and post-Isidore
HYCOM
![Page 10: Upper Ocean Response and Feedback to 2002 Hurricanes Isidore and Lili in Tandem](https://reader036.vdocuments.us/reader036/viewer/2022062517/56813373550346895d9a8787/html5/thumbnails/10.jpg)
HYCOM
Satellite
SST Cooling post-Isidore
![Page 11: Upper Ocean Response and Feedback to 2002 Hurricanes Isidore and Lili in Tandem](https://reader036.vdocuments.us/reader036/viewer/2022062517/56813373550346895d9a8787/html5/thumbnails/11.jpg)
Satellite
SST pre- and post-Lili
HYCOM
![Page 12: Upper Ocean Response and Feedback to 2002 Hurricanes Isidore and Lili in Tandem](https://reader036.vdocuments.us/reader036/viewer/2022062517/56813373550346895d9a8787/html5/thumbnails/12.jpg)
HYCOM
Satellite
SST Cooling post-Lili
![Page 13: Upper Ocean Response and Feedback to 2002 Hurricanes Isidore and Lili in Tandem](https://reader036.vdocuments.us/reader036/viewer/2022062517/56813373550346895d9a8787/html5/thumbnails/13.jpg)
zTcQ p
Shay and CookHeat Content
pre- and post-Isidore
Satellite
HYCOM
![Page 14: Upper Ocean Response and Feedback to 2002 Hurricanes Isidore and Lili in Tandem](https://reader036.vdocuments.us/reader036/viewer/2022062517/56813373550346895d9a8787/html5/thumbnails/14.jpg)
Heat Content before and after Lili
Satellite
HYCOM
Shay and Cook
![Page 15: Upper Ocean Response and Feedback to 2002 Hurricanes Isidore and Lili in Tandem](https://reader036.vdocuments.us/reader036/viewer/2022062517/56813373550346895d9a8787/html5/thumbnails/15.jpg)
A B
![Page 16: Upper Ocean Response and Feedback to 2002 Hurricanes Isidore and Lili in Tandem](https://reader036.vdocuments.us/reader036/viewer/2022062517/56813373550346895d9a8787/html5/thumbnails/16.jpg)
B: Loop CurrentA: Gulf Common Water
Isidore Lili Isidore Lili
![Page 17: Upper Ocean Response and Feedback to 2002 Hurricanes Isidore and Lili in Tandem](https://reader036.vdocuments.us/reader036/viewer/2022062517/56813373550346895d9a8787/html5/thumbnails/17.jpg)
Conclusions
Upper ocean was cooled significantly by the passage of Isidore and, therefore, the heat content loss was much larger during Isidore than Lili.
Loop Current and warm core rings (WCR) continue to provide large amount heat during Lili while the Gulf common water heat content loss was close to zero.
Although satellite observed SST shows a recovery in a few days after each hurricanes, full recovery of upper ocean takes 1-2 weeks, which is largely affected by local circulation.
HYCOM is capable of producing observed fine upper ocean features and responses to hurricanes.