The overarching goal of this project was sustained sampling of upper ocean hydrography to resolve the seasonal-to-interannual modulation of meso- and fine-scale thermohaline structure.

To achieve this goal, Spray underwater gliders made repeated occupations of a 1300-km meridional section northward from Hawaii to 34.5N along 158W.

The data set includes 1014 glider-days, covering 22566 km over ground, 22720 km through water, with 4641 dives.

Time Span
Dec 2006 - Dec 2009
Temperature, Salinity, Depth-Averaged Velocity
Daniel L. Rudnick
Funded by
National Science Foundation

Project Dataset Files

Cleaned, post-processed and vertically binned to meet user needs

Access Options

Data are available in CF compliant NetCDF files and are also available via our ERDDAP server which offers additional file types, data subsetting, visualization options and more.


DEC 2006 - DEC 2009

Project Dataset Processing

  • Averaged to 10-m vertical bins
  • Bins improve ease of use
  • Bins allow for easy integration of ADCP acoustic backscatter and velocity data
  • Filtered using QC flags
  • Only high-quality data are represented in each bin

How to Cite

When using this dataset, please cite the data as:

Rudnick, D. (2016). Seasonal-to-Interannual Modulation of Fine-Scale Thermohaline Structure [Data set]. Scripps Institution of Oceanography, Instrument Development Group. doi: 10.21238/S8SPRAY4863


Cole, S. T., & Rudnick, D. L. (2012). The spatial distribution and annual cycle of upper ocean thermohaline structure. Journal of Geophysical Research: Oceans, 117(C2); doi: 10.1029/2011JC007033
Rudnick, D. L., & Cole, S. T. (2011). On sampling the ocean using underwater gliders. Journal of Geophysical Research: Oceans, 116(C8); doi: 10.1029/2010JC006849