Figure 6. — El Nino Watch cruise tracks. 



Barnett, T. P., 1974: The North Pacific Experiment: A study 

 of large-scale ocean and atmospheric fluctuations in the 

 Pacific, WMO Reports on Marine Affairs #7, Means of 

 Acquisition and Communication of Ocean Data-II, Proc. 

 WMO Tech. Conf., Tokyo, Oct. 2-9, 1972, pp. 333-344. 



Namias, Jerome, 1974: Longevity of a coupled air-sea-conti- 

 nent system, Mon. Wea. Rev. 102(9) :638-648. 



Namias, Jerome, 1972: Influence of northern hemisphere gen- 

 era! circulation on drought in Northeast Brazil, Tellus 

 24(4):336-343. 



Namias, Jerome 1972: Experiments in objectively predicting 

 some atmospheric and oceanic variables for the winter of 

 1971-1972,/. Appl. Meteorol. II (8): 1 164-1 174. 



Peloquin, R. A., 973: A fixed gantry for handling data buoys 

 at sea, NORPAX, 5/0 Rej. Series 73-32, Univ. Calif., 

 60 pp. 



Plutchak, D. A., and Troxler, F. D., 1973: A preliminary 

 analysis of errors in wind measurements from ocean data 

 buoys, NORPAX Technical Report R-73-005, General 

 Dynamics Corp. Electronics Division, San Diego, Calif. 



Ouinn, William H., 1974: Monitoring and predicting El Nino 

 invasions, /. Appl. Meteorol. 13(7) : 825-830. 



Stidd, C. K., 1973: Estimating the precipitation climate, Water 

 Resources Res. 9(5) : 1235-1241. 



Stidd, C. K., 1974: Ship Drift Components: means and stand- 

 ard deviations, NORPAX SIO Reference Series 74-33, 57 

 pp. 



Tubbs, Anthony M., 1972: Summer thunderstorms o.vcr south- 

 ern California, Mon. Wea. Rev. 100( 1 1 ) :799-807. 



White, W. B., and T. P. Barnett, 1972: A servo mechanism 

 in the ocean/atmosphere system of the mid-latitude North 

 Pacific, J. Phys. Oceanogr. 2(4):372-381. 



White, W. B., and M. W. Evans, 1972: Synoptic time and 

 length scale of motion in the North equatorial current 

 system of the Pacific Ocean, /. Geophys. Res. 11 dO): 

 5971-5980. 



International Southern Ocean Studies (ISOS) 



These studies focus on dynamic "processes in the Southern 

 Ocean and their relation to oceanic and atmospheric circulation 

 patterns. Projects include studies of large-scale, time-dependent 

 dynamics of the Circumpolar Current and Polar Front. Future 

 studies may include the processes of bottom water formation 

 and their variability. ISOS projects are listed in table 7. 



F DRAKE (First Dynamic Response and Kinematics Experi- 

 ment) 



F DRAKE described selected distributions of properties and 

 regional phenomena in the Drake Passage and Scotia Sea re- 

 gion. This effort was directed to: delineating the path, baroclinic 

 structure, and property distributions of the Circumpolar Cur- 

 rent; determining its spatial relation to the Polar Front in the 

 Drake Passage and western Scotia Sea; and preparing a detailed 

 description of the Polar Front Zone at a selected location. 



Time Series of Velocity, Temperature, and Pressure at 

 Drake Passage. Three types of arrays containing internally re- 

 cording instruments were deployed in the Drake Passage during 

 the January to March 1975 field operation (fig. 7). 



1) An array of 10 current and temperature recorders. This 

 array was used to obtain a 1-year time series of horizontal 

 velocity (V) and temperature {T) in the deep and bottom 

 water. Of primary interest was the estimates of amplitudes of 

 motions and temperature changes having periods up to weeks, 

 spatial coherence as a function of frequency, the "mean" flow, 

 and the degree of meridional shifting of the flow in the passage. 



2) A short-term array of 12 instruments. This array was 



56°S 57° 



58^ 59 



60 61 62 S 



South America 



-Drake Passage- 



Antarctica 



• Short term 



Current meters 



A Long term 



D Pressure gauges 



Figure 7. — Schematic of instrument arrays in 

 Drake Passage. 



20 



