#CONTRIBUTOR(S), INSTITUTE(S), CONTACT INFORMATION: Dr. Adam G. Johnson Department of Geology and Geophysics School of Ocean and Earth Science and Technology University of Hawaii E-mail: adamgj@hawaii.edu Fax: (808) 956-5512 Phone: (808) 956-7748 Affiliation as of October 2009: US Geological Survey 677 Ala Moana Blvd. Suite 415 Honolulu, HI 96813 808-587-2421 ajohnson@usgs.gov #ORIGINATOR(S), INSTITUTE(S), CONTACT INFORMATION: Dr. Craig Glenn Department of Geology and Geophysics School of Ocean and Earth Science and Technology University of Hawaii 2525 Correa Road Honolulu, HI 96822 tel: (808) 956-2200 • fax: (808) 956-2538 email: glenn@soest.hawaii.edu Dr. Adam G. Johnson Department of Geology and Geophysics School of Ocean and Earth Science and Technology University of Hawaii E-mail: adamgj@hawaii.edu Fax: (808) 956-5512 Phone: (808) 956-7748 William C. Burnett Richard N. Peterson Department of Oceanography Florida State University Tallahassee, Florida, USA Paul G. Lucey Hawaii Institute of Geophysics and Planetology School of Ocean and Earth Science and Technology University of Hawaii Honolulu, Hawaii, USA #TITLE: Nutrients, temperature and salinity data for Honokohau Harbor, Kealakekua Bay, and Kailua Bay Big Island, Hawaii 2005-2007 #ABSTRACT: This data set was used as groundtruthing for low-altitude thermal infrared imagery of surface nearshore coastal waters of west Hawaii (the Big Island). Data are primarily temperature and salinity data taken in Honokohau Harbor and the adjacent oceanic waters from the surface to 5 m depth during August 2006. Additional T and S data plus nutrients (phosphates, nitrate, and silica) from fresh and brackish wells/ponds, harbors, and coastal waters were measured from August 2005 through May 2007. #PURPOSE: Understand characteristics of submarine groundwater discharge of west Hawaii in support of biogeochemical and ecosystem research #PROJECT: Aerial infrared imaging reveals large nutrient-rich groundwater inputs to the ocean #FUNDING: This work was funded by National Science Foundation Collaborative Research Grants to C.R.G. and W.C.B. #ACKNOWLEDGEMENTS: We thank M. Barbee, H. Dulaiova, D. Gremminger, E. Grossman, J. Kelly, R. Most, C. Plath, I. Santos, A. Schmidt, and B. Sellers for helping form our field teams, and are especially grateful to S. Beavers (Kaloko-Honokohau National Historical Park), R. Ravenscroft (Hawaii Department of Water Supply), W. Walsh (Hawaii Division of Aquatic Resources) and G. Wilkins for logistical aid. We are also indebted to J. Gillis-Davis and the UH HIGP engineering/ processing team for technical support. #LOCATION EXTREMES: SOUTHERNMOST LATITUDE: 19.48 SOUTHERNMOST LATITUDE HEMISPHERE: N NORTHERNMOST LATITUDE: 19.67 NORTHERNMOST LATITUDE HEMISPHERE: N WESTERNMOST LONGITUDE: 156.03 WESTERNMOST LONGITUDE HEMISPHERE: W EASTERNMOST LONGITUDE: 155.92 EASTERNMOST LONGITUDE HEMISPHERE: W #LOCATION KEYWORDS: Pacific Ocean, Hawaii, Big Island, Kona Coast, Honokohau Harbor, Kealakekua Bay, Kailua Bay #SAMPLING STATIONS: GPS used for positioning. Given in 0-data/aj_nutrients_GRL_2008.xls #BEGIN AND END DATES: (year month day) 20050814 to 20070519 #SAMPLING PERIODS: Given in 0-data/aj_nutrients_GRL_2008.xls #PARAMETERS: water temperature salinity nutrients (PO43-, Si(OH)4, NO3-) #METHODOLOGY: Vertical water column profiles of temperature and salinity were measured at SGD sites within several hours of low tide in order to coincide with maximum groundwater discharge. In situ temperature/salinity measurements were made with a YSI probe accurate to ±0.15°C and ±1% salinity. Water samples were collected between August 2005 and May 2007 throughout west Hawaii to determine regional nutrient characteristics. Samples were collected in pristine freshwater wells, brackish wells and ponds along the coastline, and nearshore and offshore ocean surface (upper 0.15 m) waters. Samples were filtered (0.45-mm GF/C) and analyzed at the University of Washington using spectrophotometric segmented flow nutrient analysis. Respective standard errors (n = 10) for Si(OH)4, NO-/3, and PO3-/4 were 1.1%, 2.5%, and 3.4% of measured concentration. #INSTRUMENT TYPES: YSI probe spectrophotometric segmented flow nutrient analysis GPS for positions #REFERENCES: Johnson, A. G., C. R. Glenn, W. C. Burnett, R. N. Peterson, and P. G. Lucey (2008), Aerial infrared imaging reveals large nutrient-rich groundwater inputs to the ocean, Geophys. Res. Lett., 35, L15606, doi:10.1029/ 2008GL034574 #SUBMITTING MEDIUM: email #DIRECTORY ORGANIZATION, FILE NAMES AND FORMATS: Original files are provided in data/0-data Primary data file: aj_nutrients_GRL_2008.xls file type: Microsoft Excel format: self-explanatory File names and comments for files provided as part of article Johnson et. al., 2008: 2008gl034574-ds01.txt, Data Set S1: Data for the temperature and salinity profile measurements in Honokohau Harbor that are shown in Figure 2 of the main text. Taken in August 2006. 2008gl034574-ds02.txt, Data Set S2: Data for the temperature and salinity measurements in the upper 0.5m of the Honokohau Harbor plume shown in Figure 3(a) of the main text. 2008GL034574-ds03.txt, Data Set S3: Locations, temperature, salinity, and nutrient concentrations for water samples in Figure 3(b-d) of the main text. No explicit dates. See ../data/0-data/aj_nutrients_GRL_2008.xls. For the given data files, the format is self-descriptive. Units: depth: m T: degree C S: ppt nutrients: uM Johnson et al.2008_txt.pdf Final article for Geophysical Research Letters In directory data/1-data/, file: Johnson et al.2008_txt.pdf is in PDF/A format, which is the standard for the national archives. For each sheet within 0-data/aj_nutrients_GRL_2008.xls, a ASCII text comma-separated version file is provided, with file name based on the sampling location as follows: 1-data/ files (self-descriptive): aj_nutrients_GRL_2008_BrackishPonds.csv aj_nutrients_GRL_2008_BrackishWells.csv aj_nutrients_GRL_2008_FreshwaterWells.csv aj_nutrients_GRL_2008_Honokohau.csv aj_nutrients_GRL_2008_Kailua.csv aj_nutrients_GRL_2008_Kealakekua.csv #DATASET SIZE: 2135 kbytes #NUMBER OF DATA UNITS: 3 primary marine sampling areas #MISCELLANEOUS: