Garcia et al. 2001 Manila Galleons Voyage Records Garcia, R.R; Diaz, H.F.; García Herrera, R.; Eischeid, J.; del Rosario Prieto, M.; Hernández, E.; Gimeno, L.; Durán, F.R.; Bascary, A.M. Garcia, R.R Diaz, H.F. García Herrera, R. Eischeid, J. del Rosario Prieto, M. Hernández, E. Gimeno, L. Durán, F.R. Bascary, A.M. earth science/paleoclimate/historical (age,null,null,year Common Era,null,historical,null,null,N,null) earth science/paleoclimate/historical (societal event,null,null,day,null,historical,raw,null,N,duration of voyage) earth science/paleoclimate/historical (societal event,null,null,day of year,null,historical,raw,null,N,start date of voyage) earth science/paleoclimate/historical (Acapulco>LATITUDE 16.85>LONGITUDE -99.916) (Manila>LATITUDE 14.583>LONGITUDE 120.95) Historical accounts of the voyages of the Manila galleons derived from the Archivo General de Indias (General Archive of the Indies, Seville, Spain) are used to infer past changes in the atmospheric circulation of the tropical Pacific Ocean. It is shown that the length of the voyage between Acapulco, Mexico, and the Philippine Islands during the period 1590-1750 exhibits large secular trends, such that voyages in the middle of the seventeenth century are some 40% longer than those at the beginning or at the end of the century, and that these trends are unlikely to have been caused by societal or technological factors. Analysis of a series of ""virtual voyages,"" constructed from modern wind data, indicates that sailing time to the Philippines depended critically on the strength of the trade winds and the position of the western Pacific monsoon trough. These results suggest that the atmospheric circulation of the western Pacific underwent large, multidecadal fluctuations during the seventeenth century. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Garcia, R.R Investigator : Diaz, H.F. Investigator : García Herrera, R. Investigator : Eischeid, J. Investigator : del Rosario Prieto, M. Investigator : Hernández, E. Investigator : Gimeno, L. Investigator : Durán, F.R. Investigator : Bascary, A.M. 2001-07-01 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/5413 https://www1.ncdc.noaa.gov/pub/data/paleo/historical/pacific/acapulco-manila.doc https://www1.ncdc.noaa.gov/pub/data/paleo/historical/pacific/acapulco-manila.pdf https://www1.ncdc.noaa.gov/pub/data/paleo/historical/pacific/duration.txt https://www1.ncdc.noaa.gov/pub/data/paleo/historical/pacific/readme_garcia2001.txt https://www1.ncdc.noaa.gov/pub/data/paleo/historical/pacific/acapulco-manila.doc https://www1.ncdc.noaa.gov/pub/data/paleo/historical/pacific/acapulco-manila.pdf https://www1.ncdc.noaa.gov/pub/data/paleo/historical/pacific/duration.txt https://www1.ncdc.noaa.gov/pub/data/paleo/historical/pacific/readme_garcia2001.txt English https://www.ncdc.noaa.gov/paleo/study/5413 https://www1.ncdc.noaa.gov/pub/data/paleo/historical/pacific/acapulco-manila.doc https://www1.ncdc.noaa.gov/pub/data/paleo/historical/pacific/acapulco-manila.pdf https://www1.ncdc.noaa.gov/pub/data/paleo/historical/pacific/duration.txt https://www1.ncdc.noaa.gov/pub/data/paleo/historical/pacific/readme_garcia2001.txt Garcia, R.R; Diaz, H.F.; García Herrera, R.; Eischeid, J.; del Rosario Prieto, M.; Hernández, E.; Gimeno, L.;Durán, F.R.; Bascary, A.M. 2001. Atmospheric Circulation Changes in the Tropical Pacific Inferred from the Voyages of the Manila Galleons in the Sixteenth - Eighteenth Centuries. Bulletin of the American Meteorological Society, 82(11), 2435. START YEAR: 1591 AD * END YEAR: 1750 AD -99.916 14.583 120.95 16.85