Spring 2005 eMOLT AOLA
Having evolved through various phases over the last 4-5 years, the eMOLT operation is settling into a routine that works for all those involved: the fishermen, administrators, and science partners. The primary objective of eMOLT (Environmental Monitors on Lobster Traps) has been, and still is, to maintain bottom temperature records at fixed locations on the Northeast Continental Shelf. While reserve funds will supply us in standard temperature probes for 3-4 years into the future, we have been investigating other technologies for obtaining "realtime" bottom temperatures. In 2004, we were able to secure funding to the Advanced Design Consultants Inc of Lansing, NY to develop a probe that wirelessly sends data to the wheelhouse. While this unit failed in its first sea trial, we hope to see this technology work in the coming year. We have also experimented with units that telemeter data via satellite. We will keep you abreast of further development on both these fronts. In the meantime, we encourage our existing participants to keep their internally-recording probes in the water until later this year.
In the figure below, the record length at each of the eMOLT sites is depicted. What we are looking for is at least one long red line from each participant (ie multi-year series from fixed sites). We hope that Dave Spencer, for example, is able to maintain his probe at his site "DS01" in the future and that Jon Shafmaster's crew continues to maintain records at "JS06". Some of the records from the original participants (TA, MJ, and WB) sites are particularly valuable because they go back several years.
A selection of these longer temperature records are plotted below. You can see that, in cases where the sites are located in proximity of each other in concurrent times, there is some coherence but, in general, there are a great deal of variability over time and space. Most of these sites are located on the edge of the continental shelf and are affected by Gulf Stream ring activity while others (JS) have a more predictable seasonal cycle.
Please visit emolt.org and provide feedback on the website presentations (firstname.lastname@example.org, 508-495-2211). This data can be displayed in many ways. How would you like it? Beginning next year, for example, we can start providing “anomaly plots” for those sites that have been occupied for multiple years.