Send Us Your Photos!
We are looking for photos of our instruments being deployed or recovered in the field. If you have any such photos, please send them along and we will use them in our social media, future newsletters, or even in some of our printed material. We will give you full photo credit and help to make you a world-famous scientific photographer!
Please contact us with any photos you might want to share through our newsletter team email at firstname.lastname@example.org
Tech Tip: Determination of Sound Velocity from CTD Data
Use of CTD measurements instead of direct sound velocity (SV) measuring devices for SV determination is appealing because CTDs are simpler and more rugged, and because their resolution, accuracy, and stability lead to far better precision and repeatability.
The absolute accuracy (how close to the correct value) of SV calculated from CTD data varies, depending on the formula chosen for the calculation and the conditions under which data were collected (shallow vs. deep). Sea-Bird software allows the customer to select from one of three SV formulas (Wilson, 1959; Del Grosso, 1972; Millero and Chen, 1977) when processing CTD data to obtain SV.
Additionally, some Sea-Bird instruments - SBE 16plus V2, 16plus-IM V2, 19plus V2, 37-SI family, 37-SM family, 45, and 49 - can calculate and output sound velocity in real-time, without the need for running software on the real-time data or post processing the data. See Application Note 6 for a detailed description of using CTD data for calculating sound velocity. [Read more]
Meet Our People
Andrew H. Barnard, Ph.D.
Vice President, Research and Development
Andrew joined WET Labs as a senior scientist in 2003 and was appointed the Vice President of Research and Development for WET Labs in 2005. Andrew holds Ph.D. and MS degrees in Oceanography from Oregon State University, and a BS degree in Marine Science from the University of South Carolina. Andrew's science research is focused on optical properties of the oceans and their relationships to biogeochemical parameters and processes. During his tenure, his team has launched several new product lines, including wet chemical in situ nutrient analyzers and autonomous profiling systems. In July of 2011 he moved to his current position as Vice President of Research and Development for Sea-Bird Scientific, as part of the unification of Sea-Bird Electronics, WET Labs, and Satlantic into Sea-Bird Scientific.
Andrew enjoys teaching his daughter about the amazing diversity of biology in the ocean, and in his spare time he loves photographing nature.