gov.noaa.nodc:0187104 eng utf8 dataset NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NOAA Contact Information Information for contacts at NCEI. information custodian 2026-07-29T13:05:33Z ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) Sea grass canopy height, wind gust, and others in Coastal Waters of Texas from 2011-08-17 to 2017-11-30 (NCEI Accession 0187104) 2019-04-15 publication 2019-05-09 revision 2019-03-29 creation International DOI Foundation (IDF) 10.25921/9qkw-3w27 NOAA National Centers for Environmental Information gov.noaa.nodc:0187104 NCEI Archive Management System 0187104 NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NCEI Contact Information Information for contacts at NCEI. information publisher Timothy L. Whiteaker The University of Texas at Austin (UT Austin) twhit@ig.utexas.edu https://www.utexas.edu/ HTTPS The University of Texas at Austin (UT Austin) website Institution web page information resourceProvider The University of Texas at Austin (UT Austin) https://www.utexas.edu/ HTTPS The University of Texas at Austin (UT Austin) website Institution web page information resourceProvider Victoria Congdon UT Austin Marine Science Institute vmcongdon@utexas.edu http://www.utmsi.utexas.edu HTTP UT Austin Marine Science Institute website Institution web page information collaborator Ken Dunton UT Austin Marine Science Institute ken.dunton@utexas.edu http://www.utmsi.utexas.edu HTTP UT Austin Marine Science Institute website Institution web page information pointOfContact Timothy Whiteaker The University of Texas at Austin (UT Austin) whiteaker@utexas.edu https://www.utexas.edu/ HTTPS The University of Texas at Austin (UT Austin) website Institution web page information collaborator Congdon, Victoria author Dunton, Ken author Whiteaker, Tim The University of Texas at Austin https://www.utexas.edu/ HTTPS The University of Texas at Austin (UT Austin) website Institution web page information author The University of Texas at Austin https://www.utexas.edu/ HTTPS The University of Texas at Austin (UT Austin) website Institution web page information author The University of Texas at Austin (UT Austin) https://www.utexas.edu/ HTTPS The University of Texas at Austin (UT Austin) website Institution web page information contributor tableDigital This dataset contains raw TIER 2 sampling data from 2015 and 2017 for Texas coastal waters related to seagrasses. Seagrass parameters measured include canopy height and percent cover. Seagrass species represented within the data include Halodule wrightii and Thalassia testudinum. Sampling takes place at 525 permanent stations in Aransas and Redfish Bays, Corpus Christi Bay, and the Upper and Lower Laguna Madre. Latitudes and longitudes for station locations are based on the NAD83 datum. There was no sampling in 2016. Additionally, this dataset also contains sediment data collected in Redfish Bay in 2011/2012 and 2017. Sediment parameters measured include total organic carbon, ammonium concentrations, and grain size. This dataset also includes interpolated wind speed data values using the recorded maximum sustained gusts of Hurricane Harvey. All data are provided in CSV format. These data were collected to support the study of a Texas Seagrass Monitoring Plan implemented using Tier 2 protocols, which are intended to provide rapid assessments of hydrography, seagrass areal coverage, species distributions and plant physiological conditions. Funding Agency: Texas General Land Office Funding Agency: Coastal Bend Bays & Estuaries Program Funding Agency: US DOI; National Park Service (National Park Servce - NPS) Funding Agency: Mission-Aransas National Estuarine Research Reserve Funding Agency: National Science Foundation completed historicalArchive NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NCEI Contact Information Information for contacts at NCEI. information pointOfContact asNeeded NCEI Accession 0187104 was revised and a new version of the archival package was published. Updates to existing archival packages may provide additional files or replace obsolete files. The latest version contains the most complete and up-to-date representation of this archival information package. All of the files received prior to this update are available in the preceding version of this accession. Please see journal.txt in the /about directory for additional details on changes made. https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:0187104 Preview graphic PNG 0187104 NCEI ACCESSION NUMBER 2019-05-03 publication AMMONIUM (NH4) SEDIMENTS - DRY WEIGHT SEDIMENTS - ORGANIC CARBON SEDIMENTS - PARTICLE SIZE FRACTIONS WIND GUST theme NODC DATA TYPES THESAURUS scale sediment sieve visual observation instrument NODC INSTRUMENT TYPES THESAURUS biological in situ laboratory analyses model output theme NODC OBSERVATION TYPES THESAURUS The University of Texas at Austin dataCentre NODC COLLECTING INSTITUTION NAMES THESAURUS The University of Texas at Austin dataCentre NODC SUBMITTING INSTITUTION NAMES THESAURUS Coastal Waters of Texas Gulf of Mexico North Atlantic Ocean place NODC SEA AREA NAMES THESAURUS oceanography theme WMO_CategoryCode 2012-09-15 publication EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > SURFACE WINDS EARTH SCIENCE > OCEANS > MARINE SEDIMENTS EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > AMMONIA theme Global Change Master Directory (GCMD) Science Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Halodule wrightii Sea Grasses- Canopy Height Sea Grasses- Percent Cover Sediment- Ammonium Concentrations Thalassia testudinum theme Provider Keywords GRANULOMETRIC SIEVES VISUAL OBSERVATIONS > VISUAL OBSERVATIONS instrument Global Change Master Directory (GCMD) Instrument Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Meterstick instrument Provider Instruments OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GULF OF AMERICA OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GULF OF MEXICO place Global Change Master Directory (GCMD) Location Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Aransas Bay Corpus Christi Bay Redfish Bay Upper and Lower Laguna Madre place Provider Place Names HGD7R1 Send2NCEI Submission Package ID accessLevel: public otherRestrictions Cite as: Congdon, Victoria; Dunton, Ken; Whiteaker, Tim; The University of Texas at Austin (2019). Sea grass canopy height, wind gust, and others in Coastal Waters of Texas from 2011-08-17 to 2017-11-30 (NCEI Accession 0187104). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/9qkw-3w27. Accessed [date]. Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives. otherRestrictions Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose. Texas Statewide Seagrass Monitoring Program 2018 publication http://texasseagrass.org/ HTTP Project Website InPort Metadata Record information crossReference Dunton, Ken; Jackson, Kim; Wilson, Sara; Congdon, Victoria; Capistrant-Fossa, Kyle; Young, Lisa; Cuddy, Meaghan; Hall, Wayne; Becker, Madison; Meiman, Joe; Whiteaker, Timothy L.; Bohannon, Patrick; Grubbs, Faye; Hobson, Cindy; Kelly, Marty (2018). Seagrass canopy height, water depth, chlorophyll-a concentration and other plant and water quality indicators in Coastal Waters of Texas (NCEI Accession 0181898). NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/3gcr-4x94. 2018-12-19 publication International DOI Foundation (IDF) https://doi.org/10.25921/3gcr-4x94 NOAA National Centers for Environmental Information gov.noaa.nodc:0181898 https://doi.org/10.25921/3gcr-4x94 HTTPS https://doi.org/10.25921/3gcr-4x94 Related Dataset information Dunton, Ken University of Texas; University of Texas - Austin; Marine Science Institute https://www.utexas.edu/ HTTPS The University of Texas at Austin (UT Austin) website Institution web page information author Jackson, Kim University of Texas; University of Texas - Austin; Marine Science Institute https://www.utexas.edu/ HTTPS The University of Texas at Austin (UT Austin) website Institution web page information author Wilson, Sara University of Texas; University of Texas - Austin; Marine Science Institute https://www.utexas.edu/ HTTPS The University of Texas at Austin (UT Austin) website Institution web page information author Congdon, Victoria University of Texas; University of Texas - Austin; Marine Science Institute https://www.utexas.edu/ HTTPS The University of Texas at Austin (UT Austin) website Institution web page information author Capistrant-Fossa, Kyle University of Texas; University of Texas - Austin; Marine Science Institute https://www.utexas.edu/ HTTPS The University of Texas at Austin (UT Austin) website Institution web page information author Young, Lisa University of Texas; University of Texas - Austin; Marine Science Institute https://www.utexas.edu/ HTTPS The University of Texas at Austin (UT Austin) website Institution web page information author Cuddy, Meaghan University of Texas; University of Texas - Austin; Marine Science Institute https://www.utexas.edu/ HTTPS The University of Texas at Austin (UT Austin) website Institution web page information author Hall, Wayne University of Texas; University of Texas - Austin; Marine Science Institute https://www.utexas.edu/ HTTPS The University of Texas at Austin (UT Austin) website Institution web page information author Becker, Madison University of Texas; University of Texas - Austin; Marine Science Institute https://www.utexas.edu/ HTTPS The University of Texas at Austin (UT Austin) website Institution web page information author Meiman, Joe US DOI; National Park Service (NPS) https://www.nps.gov HTTPS National Park Service (NPS) website Institution web page information author Whiteaker, Timothy L. University of Texas - Austin https://www.utexas.edu/ HTTPS The University of Texas at Austin (UT Austin) website Institution web page information author Bohannon, Patrick Texas Commission on Environmental Quality author Grubbs, Faye Texas Parks and Wildlife Department http://www.tpwd.state.tx.us/spdest/ HTTP Texas State Parks and Wildlife Department (TPWD) website Institution web page information author Hobson, Cindy Texas Parks and Wildlife Department http://www.tpwd.state.tx.us/spdest/ HTTP Texas State Parks and Wildlife Department (TPWD) website Institution web page information author Kelly, Marty Texas Parks and Wildlife Department http://www.tpwd.state.tx.us/spdest/ HTTP Texas State Parks and Wildlife Department (TPWD) website Institution web page information author NOAA National Centers for Environmental Information (NCEI) publisher tableDigital crossReference collection eng; USA utf8 environment oceans climatologyMeteorologyAtmosphere -97.5 -96.845 26 28.117 2011-08-17 2017-11-30 In this accession, NCEI has archived multiple versions of these data. The latest (and best) version of these data has the largest version number. NOAA National Centers for Environmental Information +1-301-713-3277 ncei.info@noaa.gov pointOfContact In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media. Contact NCEI for other distribution options and instructions. CSV PDF 6.448 https://doi.org/10.25921/9qkw-3w27 HTTPS Web browser NCEI Dataset Landing Page Navigate directly to the URL for a descriptive web page with download links. information https://www.ncei.noaa.gov/archive/accession/oas/187104 HTTPS Web browser Descriptive Information Navigate directly to the URL for a descriptive web page with download links. information https://www.ncei.noaa.gov/archive/accession/download/187104 HTTPS Web browser HTTPS Navigate directly to the URL for data access and direct download. download ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0135/0187104/ FTP Any FTP client FTP These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP). download dataset NCEI Accession 0187104 v1.1 was published. 2019-04-15T17:55:19Z NCEI Accession 0187104 v1.1 publication https://www.ncei.noaa.gov/archive/accession/0187104/1.1 HTTPS NCEI Accession 0187104 v1.1 published 2019-04-15T17:55:19Z download NCEI Accession 0187104 was revised and v2.2 was published. Updates were received for this dataset. These updates were copied into the data/0-data/ directory of this accession. These updates may provide additional files or replace obsolete files. This version contains the most complete and up-to-date representation of this archival information package. All of the files received prior to this update are available in the preceding version of this accession. 2019-05-09T18:59:22Z NCEI Accession 0187104 v2.2 publication https://www.ncei.noaa.gov/archive/accession/0187104/2.2 HTTPS NCEI Accession 0187104 v2.2 published 2019-05-09T18:59:22Z download dataset Parameter or Variable: SEA GRASSES - CANOPY HEIGHT (measured); Units: centimeter; Observation Category: in situ; Sampling Instrument: meterstick; Sampling and Analyzing Method: The four corners of the boat (port-stern, port-bow, starboard-bow, and starboard-stern) were used as seagrass sample locations. Measurements were taken approximately 2-4 meters from the boat by tossing a 0.25 m2 quadrat into the water and using a meter stick. Within each quadrat, five random shoots were extracted for canopy height measurements for each seagrass species present. Blade lengths were determined as the photosynthetic portion of the longest blade from each shoot.; Data Quality Method: The data were carefully reviewed by all authors. Parameter or Variable: WIND GUST (calculated); Units: kilometers per hour; Observation Category: model output; Sampling Instrument: ArcGIS for Desktop; Sampling and Analyzing Method: We used 10-m maximum sustained wind gusts obtained from 70 weather locations reported by the National Weather Service (NWS; M. Buchanan) in the NOAA National Hurricane Center Hurricane Harvey tropical cyclone report (Blake and Zelinsky 2018). In ArcMap 10.3 (Environmental Systems Research Institute), we imported these wind data and used Inverse-Distance Weighting (IDW) interpolation to assign values to areas between sampling points, weighted by distance. We used 12 sampling stations identified from a variable search radius (100 m2) to generate a predicted value for each unknown point. We then used the tool ‘Extract Values to Points’ to extract cell values of the interpolated wind raster for each of the 525 seagrass sampling stations.; Data Quality Method: The data were carefully reviewed by all authors. Parameter or Variable: SEDIMENTS - DRY WEIGHT (measured); Units: gram; Observation Category: laboratory analysis; Sampling Instrument: sediment sieve; Sampling and Analyzing Method: To determine sediment grain size, sand/silt/clay ratios were determined following the methods of Folk (1964). Percent contribution by weight was measured for four components: rubble (shell), sand, silt, and clay. A 20-ml sediment sample was mixed with 100 ml of 3% hydrogen peroxide and 75 ml of de-ionized water to digest organic material in the sample. The sample was then wet sieved through a 63μm mesh stainless steel screen using a vacuum pump and a Millipore Hydrosol SST filter holder to separate rubble and sand from silt and clay. After drying, the rubble (shell) and sand was separated on a 250μm screen. The silt and clay fractions were measured using pipette analysis. Briefly, the settling velocity was used to classify the particles and to determine the percent composition of each fraction, based on weight.; Data Quality Method: The data were carefully reviewed by all authors. Parameter or Variable: SEDIMENTS - PARTICLE SIZE FRACTIONS (measured); Units: percent; Observation Category: laboratory analysis; Sampling Instrument: sediment sieve; Sampling and Analyzing Method: To determine sediment grain size, sand/silt/clay ratios were determined following the methods of Folk (1964). Percent contribution by weight was measured for four components: rubble (shell), sand, silt, and clay. A 20-ml sediment sample was mixed with 100 ml of 3% hydrogen peroxide and 75 ml of de-ionized water to digest organic material in the sample. The sample was then wet sieved through a 63μm mesh stainless steel screen using a vacuum pump and a Millipore Hydrosol SST filter holder to separate rubble and sand from silt and clay. After drying, the rubble (shell) and sand was separated on a 250μm screen. The silt and clay fractions were measured using pipette analysis. Briefly, the settling velocity was used to classify the particles and to determine the percent composition of each fraction, based on weight.; Data Quality Method: The data were carefully reviewed by all authors. Parameter or Variable: SEA GRASSES - PERCENT COVER (measured); Units: percent; Observation Category: in situ; Sampling Instrument: visual observation; Sampling and Analyzing Method: Species composition and areal coverage were obtained from four replicate quadrat samples per station at each of the four cardinal locations from the vessel boat (port-stern, port-bow, starboard-bow, and starboard-stern). Percent cover of areal biomass was estimated by direct observation, looking down at the seagrass canopy through the water using a 0.25 m2 quadrat framer subdivided into 100 cells.; Data Quality Method: The data were carefully reviewed by all authors. Parameter or Variable: AMMONIUM (NH4) (measured); Units: micromole; Observation Category: laboratory analysis; Sampling Instrument: spectrophotometer; Sampling and Analyzing Method: To determine sediment porewater ammonium, thawed then centrifuged the sediment core and processed the supernatant using the colorimetric techniques in Parsons et al. (1984). Once sediment samples were thawed, samples were homogenized by stirring with glass rod or squeezing the bag several times. We weighed each sample + centrifuge tube to the nearest 0.1 g and capped each centrifuge tube immediately after weighing to prevent evaporation from the sediment sample. To obtain the sediment porewater, we set the centrifuge to run for 10-20 min (depending on soil moisture) at 10,000 rpm. We used the following reagents: Ultra pure water; Phenol alcohol: dissolved 5 g reagent-grade phenol in 50 ml 95% ethanol; Sodium nitroprusside solution: dissolved 0.5 g sodium nitroprusside in 100 ml ultra pure water; Alkaline solution: dissolved 80 g sodium citrate and 4.0 g NaOH in 400 ml ultra pure water; Sodium hypochlorite: used commercially available hypochlorite (e.g. Ultra Clorox); Oxidizing solution: mixed 5 ml alkaline solution with 1.25 ml of sodium hypochlorite. For the Standard Curve, we added 133.7 mg NH4Cl (FW = 53.49 g mole-1) to a volumetric flask and bring to 500 ml with ultra pure water (= 5 mM). We then added 1 ml of this solution to a volumetric flask and brought to 100 ml with ultra pure water (= 50 μM). Standard curve and reagents were calculated for 2.5 ml samples. We ran at least three replicates (n = 3) for each concentration. μM concentrations were calculated from μg NH4 +/2.5 ml by multiplying by 22.2 (i.e., (1 μg NH4 +/2.5 ml) x (1000 ml/L) x (1 μmole NH4 +/18 μg NH4 +) = 22.2 μmole/L). To process the samples, we added 2.5 mL of water sample or standard to corresponding test tube. We diluted as necessary with low-ammonia seawater (i.e., “blue water”). For example, for sediments, we diluted 0.5 ml sample with 2.0 ml “blue water”. We added 0.1 ml phenol alcohol to the samples, vortexed, and waited one minute. We then added 0.1 ml sodium nitroprusside solution, vortexed, and waited one minute. Next, we added 0.25 ml oxidizing solution, vortexed, and waited one minute. We mixed samples thoroughly, capped or covered the tube with parafilm and allowed the sample to develop for 1 hr in the dark and at room temperature. On the spectrophotometer, we recorded absorbance at 640 nm and ensured to auto zero the spectrophotometer to blue water blanks that had chemicals added to them. We read standards first and again every 10 samples to ensure spectrophotometer was running properly. We regressed samples absorbance to standard curve considering the dilution factor.; Data Quality Method: The data were carefully reviewed by all authors. Parameter or Variable: SEDIMENTS - ORGANIC CARBON (measured); Units: percent; Observation Category: laboratory analysis; Sampling Instrument: scale; Sampling and Analyzing Method: To determine sediment total organic carbon, samples were homogenized, placed in aluminum weighing tins and dried in a 60 ºC oven (to remove water) for 12-24 hr. Samples were then removed from the oven and placed in a desiccator (to prevent moisture from the air changing the sample weight) to cool to room temperature. Once cooled, samples were weighed to the nearest 0.1 g, and placed in a muffle furnace to combust organic material, at 550 ºC for 4 hr. After cooling samples to room temperature in a desiccator, the samples were reweighed and Loss on Ignition (LOI) was calculated using the following formula, where DW is sample dry weight (in grams): LOI550 (as a percentage) = ((DW60 - DW550) / DW60) x 100. The weight loss is proportional to the amount of organic carbon contained in the sample.; Data Quality Method: The data were carefully reviewed by all authors. asNeeded Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness. NOAA National Centers for Environmental Information custodian scale scale An instrument for measuring mass or weight. sediment sieve sediment sieve USA standard testing sieve (A.S.T.M.E.) visual observation visual observation not an instrument - maybe an observation type