LIST OF PLATES 



Plate I. 



II. 



III. 



IV. 



V. 



VI. 



VII. 



VIII. 



IX. 



X. 



XI. 



XII. 



XIII. 



XIV. 



XV. 



XVI. 



XVII. 



XVIII. 



XIX, 



XX. 



XXI. 



XXII. 



XXIII. 



XXIV. 



XXV. 

 XXVI. 



XXVII. 



XXVIII. 



Distribution of surface temperature observations in one-degree fields in January with an inset of the Gulf of Mexico. 



Distribution of the surface temperature observations in one-degree field.? in July with an inset of the Gulf of Mexico. 



Distribution of observations of surface saline content in one-degree fields in January with an inset of the Gulf of 

 Mexico. 



Distriljution of observations of surface saline content in one-degree fields in July with an inset of the Gulf of Mexico. 



Mean annual surface temperature (°C) computed for one-degree fields. 



Mean monthly surface temjieraturc (°C) for January, computed for one-degree fields. 



Mean monthly surface temperature (°C) for February, computed for one-degree fields. 



Mean monthly surface temperature (°C) for March, computed for one-degree fields. 



Mean monthly surface temperature (°C) for April, computed for one-degree fields. 



Mean montlily surface temperature (°C) for May, computed for one-degree fields. 



Mean monthly surface temperature (°C) for June, computed for one-degree fields. 



Mean montlily surface temperature (°C) for July, computed for one-degree fields. 



Mean monthly surface temperature (°C) for August, computed for one-degree fields. 



Mean monthly surface temperature (°C) for September, computed for one-degree fields. 



Mean monthly surface temperature (°C) for October, computed for one-degree fields. 



Mean monthly surface temperature (°C) for November, computed for one-degree fields. 



Mean monthly surface temperature (°C) for December, computed for one-degree fields. 



Temperature anomalj' of the surface water (°C) on the annual average, based on annual averages of the combined 

 oceans for two-degree zones and drawn according to values for two-degree fields. 



Temperature anomaly of the surface water (°C) on the annual average, based on annual averages of the Atlantic 

 Ocean for two-degree zones and drawn according to averages for two-degree fields. 



Temperature anomaly of the surface water (°C) in January, based on January averages of the Atlantic Ocean 

 for two-degree zones and drawn according to averages for two-degree fields. 



Temperature anomaly of the surface water (°C) in April, based on April averages of the Atlantic Ocean for two- 

 degree zones and drawn according to averages for two-degree fields. 



Temperature anomaly of the surface water (°C) in July, based on July averages of the Atlantic Ocean for two- 

 degree zones and drawn according to averages for two-degree fields. 



Temperature anomaly of the surface water (°C) in October, based on October averages of the Atlantic Ocean for 

 two-degree zones and drawn according to the averages for two-degree fields. 



Density of the surface water (t) on a quarterly average, December to February, and drawn according to averages 

 for two-degree fields. 



Water color in percent of yellow according to the Forel scale for the Atlantic Ocean. 



Mean annual variation of the temperature of the surface water (°C) and drawn according to averages for two-degree 

 fields. 



Time at which the temperature maximum begins in the surface water and drawn according to averages for tv,-o- 

 degree fields. 



Time at 'which the temperature minimum begins in the surface water and drawn according to averages for two- 

 degree fields. 



T 



