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Goddard-Caldwell Daily Visual Surf Observation Database: Daily visual surf observations on Oahu, Hawaii, from 1968 to 2020


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            title:  Goddard-Caldwell Daily Visual Surf Observation Database: Daily visual surf observations on Oahu, Hawaii, from 1968 to 2020
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                date:  2001-04-16
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                date:  2022-01-03
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                  Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/person/details/1074 Larry Goddard
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                  Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/person/details/87 Patrick Caldwell
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                  Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/institution/details/300 University of Hawaii; Marine Laboratory
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                  Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/person/details/1074 Larry Goddard
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                  Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/person/details/87 Caldwell, Patrick
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                  Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/person/details/1074 Goddard, Larry
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        abstract:  Surf reports are typically made several times per day at select locations around Oahu, primarily by Honolulu City and County lifeguards and the Surf News Network, Inc. Wave heights are reported in Hawaii scale, Hs, which systematically underestimates breaker size by as much as one-half. Although exactly when and why this tendency originated is highly disputed, it became the primary means of communicating surf size by the late 1960s. From publicly available surf reports and other notes from reputable surfers, Mr. Larry Goddard logged heights from 1968 through September 1987 and Mr. Patrick Caldwell has done similarly from September 1987 to 2020. The caretakers of the dataset typically cross-check observations among the various reporters for quality control. The daily value in the GC set represents the upper end of the reported height range, which is roughly equivalent to H1/10, for the observing time and location with the highest breakers along a given coast facing a similar direction. For the north shore, most observations are taken at Sunset Point, which is usually one of the areas of highest surf under the dominant northwest swells. For days of extreme surf with heights greater than 15 Hs, visual observations are reported from Waimea Bay, where breakers are closer to shore. For the south shores, Ala Moana is usually the reporting site. Observations from the west and east side of Oahu have also been recorded although these reports are of lower quality. Comparisons of the Goddard-Caldwell collection to 1981-2002 data from NOAA buoy 51001, which is located roughly 400 km west-northwest of Oahu, show the north shore surf observations are temporally consistent with the shoaling-only, buoy-estimated breaker heights and have an uncertainty of 10 to 15% of the surf height.
        purpose:  To better understand wave height variability.
        credit:  Thanks are given to the surf observers-- lifeguards of the City and County of Honolulu and employees of the Surf News Network. Deep appreciation is given to Mr. Larry Goddard for sharing his digital database of surf observations. For his set of data, thanks go out to the various lifeguard reporters and reputable surfers: Randy Rarick, Peter Cole, Bernie Baker, and Albert Benson. For the Caldwell set, thanks are given to Garret McNamara, Ian Masterson, Kaleo Ahina, Robert Yonover, and Clark Abbey for surf information which was used in cross checking the lifeguard reports. While the author was away from the island, various students and staff at the University of Hawaii and Windward Community which include: Ian Masterson, Kaleo Ahina, Shaun Johnston, Eric Grossman, Jerome Aucan, Yvonne Firing, Kimball Millikan, and Robert Burke. Great thanks go out to all these individuals. For access to the digital cameras, appreciation is given to Surfline, Inc. (www.surfline.com), and for daily surf notes and pictures, thanks are extended to Jamie Ballenger (www.hawaiianwatershots.com) and Claudia Ferrari (www.claudiaferrari.com/news.htm).
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              Anchor:  https://gcmd.earthdata.nasa.gov/kms/concept/0982484f-4bb9-41dd-8841-931435cc138d VISUAL OBSERVATIONS > VISUAL OBSERVATIONS
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              Anchor:  https://gcmd.earthdata.nasa.gov/kms/concept/2219e7fa-9fd0-443d-ab1b-62d1ccf41a89 FIXED OBSERVATION STATIONS > FIXED OBSERVATION STATIONS
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              Anchor:  https://vocab.ices.dk/services/pox/GetCodeDetail/SHIPC/33DV SWIMMER/DIVER (ICES code: 33DV)
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              Anchor:  https://gcmd.earthdata.nasa.gov/kms/concept/2006ec69-34f2-4ece-8823-6dc49f892b02 OCEAN > PACIFIC OCEAN > CENTRAL PACIFIC OCEAN > HAWAIIAN ISLANDS
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            keyword:  Ala Moana
            keyword:  Diamond Head
            keyword:  Hawaii
            keyword:  Laniakea Beach
            keyword:  Maili
            keyword:  Makaha
            keyword:  Makapuu
            keyword:  North Beach
            keyword:  North Pacific Ocean
            keyword:  Oahu
            keyword:  Publics (Nanatorium)
            keyword:  Sunset Beach
            keyword:  Sunset Point
            keyword:  Waimea Bay
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            otherConstraints:  Cite as: Caldwell, Patrick; Goddard, Larry (2001). Goddard-Caldwell Daily Visual Surf Observation Database: Daily visual surf observations on Oahu, Hawaii, from 1968 to 2020. [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/Goddard-Caldwell_Database. Accessed [date].
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                title:  Caldwell, P. C., 2005. Validity of North Shore, Oahu, Hawaiian Islands Surf Observations. Journal of Coastal Research, 21(6), pp. 1127-1138. https://doi.org/10.2112/03-0092.1
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                title:  Caldwell, P. C. and J. P. Aucan, 2007. An Empirical Method for Estimating Surf Heights from Deepwater Significant Wave Heights and Peak Periods in Coastal Zones with Narrow Shelves, Steep Bottom Slopes, and High Refraction. Journal of Coastal Research, 23(6), pp. 1237-1244. https://doi.org/10.2112/04-0397R.1
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                title:  Caldwell, P. C, Aucan, J. P., and Vitousek, S., 2009. Frequency and Duration of Coinciding High Surf and Tides along the North Shore of Oahu, Hawaii, 1981–2007. Journal of Coastal Research, 25(3), pp. 734-743. https://doi.org/10.2112/08-1004.1
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                    beginPosition:  1968-08-01
                    endPosition:  2020-12-10
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