WHOLE VOL. 



NOTES. NORTH PACTFIC IO3 



NORTH PACIFIC 



HAWAIIAN ISLANDS 



HONOLULU 



Lat. 21° 19' N. Long. 157° 52' W. 



Pressure. 



Authorities : 



1883 to 1890 March. Report of Assistant in Charge of 



Meteorology, Honokiki. 1890, p. 23. 

 1891 to 1903. Weather Record for Honolulu and the 



Hawaiian Islands 1903. p. 40. 

 1904 September to 1920. Manuscript data supplied by the 

 United States Weather Bureau, Washington. 

 Site: In 1883 the height of the barometer above Mean Sea Level 

 was 34 ft. and in 1892, 50 ft. The date of change 

 is not known, but the observations up to 1903 are 

 published at Mean Sea Level and it is presumed 

 that the appropriate corrections have been applied. 



1892 to 1903 50 ft. 



1904 September to 1920 38 ft. 



All values have been corrected to a height of 38 ft. by apply- 

 ing a correction of —.040 in. to the values from 

 1883 to 1903. 

 Hours: 



1883 to 1890 March. lO^V i5'\ 21^'. 

 1 89 1 to 1903. 9'\ I5*\ 

 1904 September to 1920. 8'\ 20^'. 

 Notes: The values from 1883 to 1890 March have been cor- 

 rected to normal gravity (Lat. 45°) by applying a 

 correction of —.057 in. From 1891 to 1903 the 

 gravity correction is stated to have been applied in 

 the published values and from 1904 to 1920 the 

 gravity correction was applied by the V. S. 

 Weather Bureau. 

 The ])ressure data from 1892 to 1925 were reduced to a 

 uniform series, 4(8'' + 2o'0 , by Mr. R. H. Weight- 

 man of the U. S. Weather Bureau. The same 

 mean correction was applied to the monthly and 

 annual values of 1891. 

 An a])])roximate correction of +.030 was ai:)plied to the 

 observations from 1883 to 18(90 to correct to the 

 same hours, l{S^' + 20^'), and to the .same level, 

 38 ft. 



