Tag: Summer

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Summer Satellite Remote Sensing Training Course


June 5 – June 16, 2023, Cornell University, Ithaca New York
After a 3-year hiatus due to the covid pandemic, the Cornell University Summer Satellite Remote Sensing Training Program is being offered once again.  This program is intended for marine scientists who have modest or no prior experience with satellite remote sensing techniques. The program is highly methods-oriented and intended to give participants the practical skills needed to work independently to acquire, analyze and visualize large data sets derived from a wide range of ocean satellite sensors.  

Strong emphasis is given to ocean color remote sensing and the use of NASA’s SeaDAS software to derive mapped imagery of geophysical parameters (e.g., chlorophyll or CDOM) derived from the Earth science data available through NASA’s Ocean Biology Distributed Active Archive Center (OB.DAAC).  Pre-written python scripts will be used in conjunction with SeaDAS to batch process large quantities of ocean color data from Level-1 to Level-3. 

Developing good Python programming skills needed for data analysis and visualization is a central component of this course.  The course also addresses the acquisition and use of Level-3 satellite data products for sea surface temperature, ocean wind speed and sea surface height.  

NOTE:  The Ocean Carbon and Biogeochemistry Program (OCB) at the Woods Hole Oceanographic Institution has offered to provide financial support for up to five highly qualified participants to this training program. Applying for OCB support is done independent of the satellite program enrollment process. See the OCB link below for details.

For more information about the training program content and enrollment process:
Visit:      http://oceanography.eas.cornell.edu/satellite
Email:   Bruce Monger (bcm3@cornell.edu)

For information about OCB financial support:
Visit:,  OCB Tuition Support
Email: Heather Benway (hbenway@whoi.edu)

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Abnormal upwelling and chlorophyll-a concentration off South Vietnam in summer 2007

Liu, X., J. Wang, X. Cheng, and Y. Du (2012), Abnormal upwelling and chlorophyll-a concentration off South Vietnam in summer 2007, J. Geophys. Res., 117, C07021, doi:10.1029/2012JC008052.

Abstract

The present study investigates a strong upwelling and concurrent phytoplankton bloom off the South Vietnam coast in August 2007. Analysis of the alongshore wind, offshore Ekman transport, wind stress curl and other parameters indicates the southwesterly summer monsoon plays an important role in this peculiar case. The change of monsoonal wind involves variations of atmospheric circulation on multiple time scales. On the interannual time scale, a positive Indian Ocean Dipole (IOD) in 2007 accompanying with a La Niña event acts to enhance the southwesterly monsoon over the South China Sea (SCS). The enhanced southwesterly wind is regarded as a major factor in promoting the upwelling and the phytoplankton bloom off the South Vietnam coast. On the intraseasonal time scale, variations of the sea surface temperature (SST) and sea surface wind at 30-60 day periods reveal that the SST cooling develops with the evolution of the southwesterly wind anomalies with nearly one week delay, implying the great significance of the Madden-Julian Oscillation (MJO). Moreover, a tropical storm formed in the western SCS in early August reinforces the westerly wind and SST cooling. Among multiple factors on different time scales, the MJO event is considered as the major cause, since it induces the maximum velocity (4 m/s) of the southwesterly wind anomalies. As a result, the high Chlorophyll-a concentration (>0.56 mg/m3) and low SST center (<27 {degree sign}C) develops in the region off the South Vietnam coast and advects to the central SCS, riding on the northern rim of the southern anticyclonic gyre.

Keywords:

  • Chlorophyll-a concentration
  • El Niño
  • Indian Ocean dipole
  • Madden-Julian Oscillation
  • South Vietnam coast
  • upwelling