Clare Island Survey. 



6 

 CLIMATOLOGY. 



By W. J. LYONS. 

 Plates I-II. 



Read January 12. Published February 23, 1914. 



Introduction. 



The scientific survey of Clare Island and district has resulted in a collection 

 of knowledge as to the flora and fauna of a particular area which is probably 

 unique. The full significance of the work will only appear when the facts 

 that have been established are co-ordinated and correlated and interpreted 

 broadly with reference to such subjects as ecology, dispersal, and geographical 

 distribution. In any attempt towards such correlation the conditions of 

 climate which obtain over the area in question will claim attention and 

 reliable knowledge as to such conditions must be available. 



The present report is intended accordingly to serve as an appendix to the 

 biological memoirs on Clare Island. It cannot claim to be a contribution to 

 meteorological science. With this point in view it was considered to be more 

 satisfactory to base the report on the comparatively few and poor records 

 available for the district than to attempt to draw doubtful conclusions from 

 a study of what might be regarded as the meteorological factors in operation 

 over the area. 



The following elements of climate are considered : — 



1. Winds. 4. Humidity. 



2. Barometric Pressure. 5. Eainfall. 



3. Air Temperature. 6. Sunshine. 



The author begs to acknowledge here the assistance he received in the 

 preparation of the report from the Department of Agriculture and Technical 

 Instruction for Ireland, the Board of Irish Lights, the Meteorological Office, 

 London, and the British Eainfall Organization. 



1. Winds. 



The present report on the winds of Clare Island is based on the light- 

 keeper's observations as officially recorded in the Weather Journals of the 

 Clare Island lighthouse. The Weather Journals placed at our disposal were 

 such as to give a satisfactory record for not more than 17 years, viz. 1894 



8,j,a. proc, vol. xxxi. A 6 



