(1959) has been more rewarding and leads to 

 the conclusion that changes in water tempera- 

 ture at a given station are often the result 

 of wind-induced advection rather than in situ 

 modification of water by the atmosphere. 

 Day (1960) shows an instance of this happening 

 at Browns Ledge during the summer of 1959. 



The 1960 Data 



Surface temperature (fig. 1).--The surface 

 water temperature regime from Cape Cod 

 to Cape Hatteras was marked by a warm Jan- 

 uary and February followed by a cold March 

 which produced the minima for all stations. 

 This cold period was similar to that in 1958 

 though it was less intense and of shorter 

 duration; the temperature barrier at Cape 

 Hatteras was weakened but not breached. 

 Recovery was rapid and was followed by 

 above-the-mean temperatures during the late 



spring and summer. November was warm, 

 but December temperatures fell well below 

 the mean. 



Bottom temperature (fig. 1). --During the 

 nearly isothermal months of late winter bottom 

 water temperatures reflected surface condi- 

 tions; values were low but not as low as in 

 1958. The summertime intrusion of cold bottom 

 water was again apparent from Barnegat 

 station southward. At most stations maximum 

 bottom readings occurred after the autumn 

 turnover in late September; values were high, 

 probably because of the warm surface condi- 

 tions earlier in the month. It is noteworthy 

 that except at Barnegat Lightship hurricane 

 Donna, which moved up the coast on Septennber 

 11 and 12, failed to mix the water column 

 completely and that the turnover was not 

 accomplished until late in the month. 



I960 



M I A I M I J I J ' A I S I 

 SURFACE T. °F 



I960 



A I M I J I J I A I S 

 BOTTOM T °F 



N I D 



Figure 1.— The cycle of temperature at the surface (left) and bottom (right) along the series of observation posts for 1960. Heavy dotted and 

 dashed lines indicate minimum and maximum temperatures respectively. 



