File:Aerographer's Mate 3 and 2 (1976) (17918907346).jpg

Title: Aerographer's Mate 3 & 2
Identifier: aerographersmate00nava (find matches)
Year: 1976 (1970s)
Authors: Naval Education and Training Program Development Center; United States. Bureau of Naval Personnel
Subjects: United States. Navy; Meteorology; Oceanography
Publisher: Washington : U. S. Dept. of Defense, Navy Dept. , Naval Education and Training Support Command
Contributing Library: University of Illinois Urbana-Champaign
Digitizing Sponsor: University of Illinois Urbana-Champaign

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Chapter 11 —WATCH ROUTINES (CONTINUED)
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Figure 11-23. —Sea surface temperature analysis of western North Atlantic. 209.331 Analysis Techniques. — In most areas in which the AG will work, he will have available to him recent SST analyses in the form of charts or RATTGRAPHIC teletype messages. These charts will provide a history to fol- low when performing analysis. Through refer- ence to these history charts and a current synoptic chart, the task of analyzing the SST chart is simplified to a considerable degree. This is due to the fact that the oceans show considerable conservatism and change gradually. Even in areas where two major currents are adjacent, only small orderly changes take place. This tendency of the oceans to change at a gradual pace must be constantly kept in mind. Any sudden changes in temperature patterns should be closely examined and their cause determined as to whether the change is real or in error. A few of the more pertinent rules of be- havior of the oceans to be considered as you prepare the SST analysis are as follows: 1. Look for a complex analysis of tongue- like protrusions on the northern edge of the Gulf Stream such as those indicated in figure 11-23. This same configuration will probably be evident for any of the northward flowing major currents. 2. Watch for rapid changes in the horizontal temperature gradient to the north (i.e., tight gradient). 3. A much less complex pattern will char- acterize thci Gulf Stream or other major cur- rents on the southern side. 4. Cold tongues will generally be orientated toward the south or southwest (from a source in the north or northeast). Warm tongues will be orientated towards the north or northeast (from the source of warm water). 5. The Gulf Stream or other major cur- rents can be expected to be continuous and should not be segmented or cut into by cold tongues. 6. Although isolated pools of water do exist, they are rare. If they do occur, they will last only a short time and therefore probably not show up on composite charts. 221

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