68094 LBSP: CTD Aua Data Set Published / External 64847 LBSP Project Completed 2022 2023 This metadata record describes the data collected from near-shore shallow water Conductivity-Temperature-Depth (CTD) casts conducted in Aua Reef, American Samoa, by scientists of the Ecosystem Sciences Division (ESD) of the NOAA Pacific Islands Fisheries Science Center (PIFSC) from September 13 - 23, 2022. For this fly-in mission (MP2206), the NOAA Fisheries, Ecosystem Sciences Division established 18 survey sites along the water quality gradient near land-based source pollution. This is part of a larger collection of datasets collected as part of the CRCP-funded project 'Linking watershed management activities to reef health in American Samoa' (Project #31303). The CTD casts provide vertical profiles (5-m max depth, downcast only) of water column conductivity, temperature, and pressure (Sea-Bird Electronics, SBE19-plus), with calculated depth, salinity, and water density. The CTD cast was conducted by snorkel. The CTD soaked at the surface for 1 minute to cycle water through the instrument and tubing. Afterward, data were collected by lowering the CTD in profiling mode at an even pace (descent rate ~0.5 to 0.75 meters per second) to a maximum depth of 5 m. The focal point of this project was to establish a comprehensive biological, water quality, and carbonate chemistry baseline for Aua reef. This work aims at identifying measurable spatial differences in the structure and composition of the benthic and coral community at Aua that can be explained by measurable spatial patterns of water quality (nutrients and sediments) and water carbonate chemistry (pH and Alkalinity). This work is of fundamental importance for the development of the Aua Watershed Management Plan, and will enable Federal and jurisdictional resource managers to more effectively assess the effectiveness of watershed management actions reducing land-based pollution and impacts to the adjacent coral reef ecosystems. This project builds on prior baseline and status and trends assessments conducted in 2012, 2015, and 2020 in Faga'alu Bay (U.S. Task Force watershed priority site) and Vatia (Territorial priority watershed) to address National and Jurisdictional goals to reduce land-based sources of pollution impacts in coral reef ecosystems. This baseline assessment for land-based sources of pollution on Aua reef is part of a larger CRCP-funded project ID 31303: "Linking watershed management activities to reef health in American Samoa". Water samples were collected alongside the CTD casts as part of this baseline assessment for the analysis of particulate and dissolved nutrients, total suspended solids, chlorophyll-a, and seawater pH and Alkalinity. Coral demographic, benthic cover, and non-coral community data was also collected as part of this project. These data are documented and archived separately. Theme Global Change Master Directory (GCMD) Data Center Keywords DOC/NOAA/NMFS/PIFSC/ESD > Ecosystem Sciences Division, Pacific Islands Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce Theme Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > REEF > CORAL REEF Theme Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE Theme Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > OCEANS > SALINITY/DENSITY > CONDUCTIVITY > CONDUCTIVITY PROFILES Theme Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > OCEANS > SALINITY/DENSITY > DENSITY Theme Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > OCEANS > SALINITY/DENSITY > OCEAN SALINITY > OCEAN SALINITY PROFILES Theme ISO 19115 Topic Category oceans Spatial Global Change Master Directory (GCMD) Location Keywords OCEAN > PACIFIC OCEAN > CENTRAL PACIFIC OCEAN > AMERICAN SAMOA Instrument Global Change Master Directory (GCMD) Instrument Keywords CTD > Conductivity, Temperature, Depth Theme CRCP Project 31303 Theme CRCP Project Linking watershed management activities to reef health in American Samoa Theme CoRIS Discovery Thesaurus Numeric Data Sets > Oceanography Theme CoRIS Theme Thesaurus EARTH SCIENCE > Biosphere > Aquatic Habitat > Reef Habitat Theme CoRIS Theme Thesaurus EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment Theme CoRIS Theme Thesaurus EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > In Situ Physical Theme CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Coastal Processes > Coral Reefs Theme CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Ocean Pressure > Sea Level Pressure Theme CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Ocean Temperature > Water Temperature Theme CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Salinity/Density > Conductivity Theme CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Salinity/Density > Density Theme CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Salinity/Density > Salinity Theme NODC DATA TYPES THESAURUS CONDUCTIVITY Theme NODC DATA TYPES THESAURUS DEPTH - SENSOR Theme NODC DATA TYPES THESAURUS PRESSURE - WATER [HYDROSTATIC PRESSURE] Theme NODC DATA TYPES THESAURUS SALINITY Theme NODC DATA TYPES THESAURUS SIGMA-T Theme NODC DATA TYPES THESAURUS WATER TEMPERATURE Theme NODC OBSERVATION TYPES THESAURUS in situ Theme NODC OBSERVATION TYPES THESAURUS physical Theme NODC OBSERVATION TYPES THESAURUS profile Theme NODC PROJECT NAMES THESAURUS CORAL REEF STUDIES Theme NODC PROJECT NAMES THESAURUS Coral Reef Conservation Program Theme NODC SUBMITTING INSTITUTION NAMES THESAURUS US DOC; NOAA; NMFS; Pacific Islands Fisheries Science Center; Ecosystem Sciences Division Theme CRED Theme CREP Theme Climate Change Theme Coral Reef Ecosystem Division Theme Coral Reef Ecosystem Program Theme ESD Theme Ecosystem Sciences Division Theme LBSP Theme PIFSC Theme Pacific Islands Fisheries Science Center Theme land-based source pollution Spatial CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > American Samoa > American Samoa > American Samoa (14S170W0000) Spatial CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > American Samoa > American Samoa > Tutuila Island (14S170W0016) Spatial CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > American Samoa > American Samoa (14S170W0000) Spatial CoRIS Place Thesaurus OCEAN BASIN > Pacific Ocean > American Samoa > Tutuila Island (14S170W0016) Spatial NODC SEA AREA NAMES THESAURUS South Pacific Ocean Spatial AMSM Spatial American Samoa Instrument NODC INSTRUMENT TYPES THESAURUS CTD Platform NODC PLATFORM NAMES THESAURUS CHARTERED VESSEL Pacific Islands Fisheries Science Center Honolulu HI USA Data Set CSV Files As Needed Table (digital) CTD data include metadata for each observation and conductivity, temperature, and pressure observations with calculated depth, salinity and density. https://www.fisheries.noaa.gov/inport/item/69889 While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. NOAA Fisheries, PIFSC Ecosystem Sciences Division and partners, and funded by the NOAA Coral Reef Conservation Program 69889 Published / External Conductivity-Temperature-Depth Entity and Attributes Spreadsheet Yes Conductivity-Temperature-Depth Entity As of 2018, these are the active / relevant fields: SHALLOWCTDID, CTDDATAKEY, CTDCASTID, ASSOC_OCC_SITEID, ASSOC_REA_SITE, CRUISE, REGIONCODE, REGION, LOCATIONCODE, LOCATION, LATITUDE, LONGITUDE, UTCDATETIME, CASTYEAR, WATERSAMPLE, OFFSHORE_YN, SURVEY_DESIGN, PRESSURE_DB, DEPTH_M, TEMP_DEGC, COND_S_PER_M, SALN_PSU, DENSITY_SIGMAT DENSITY_SIGMAT Double No No Active Calculated sigma-t density value, the density of seawater at atmospheric pressure minus 1000 kilograms / cubic meter. 1 CTDCASTNAME Text No No Active Unique ID for CTD Cast: typically cruise/MISSION ID, REGION (optional), 3-letter island code (LOCATIONCODE), last 4 digits of CTD serial number, cast number/id. 2 CTDDATAID Long Integer No No Active Unique numeric ID for each depth bin within a CTD cast (6-digit number). 3 CTDCASTID Long Integer No No Active Unique numeric ID of CTD cast (4-digit number). 5 ASSOC_REA_SITE Text No No Active An identifier for the ecological site at the island or atoll (LOCATION) associated with the CTD cast. Combines a 3-letter island code (derived from LOCATIONCODE) with a 2-4 digit site number. 7 REGIONCODE Text No No Active Code for REGION. 8 REGION Text No No Active The name of the region where the CTD cast was conducted in the Pacific Islands region: American Samoa, Pacific Remote Island Areas, Mariana Archipelago, main Hawaiian Islands, Northwestern Hawaiian Islands. 9 ISLANDCODE Text No No Active 3-Letter unique code for LOCATION. 10 ISLAND Text No No Active Name of island or atoll where the CTD cast was conducted in the Pacific Islands region (REGION). 11 LATITUDE Double No No Active Latitude in decimal degrees, WGS84, for the CTD cast. 12 LONGITUDE Double No No Active Longitude in decimal degrees, WGS84, for the CTD cast. 13 UTCDATETIME Date/Time No No Active UTC date and time of CTD cast (yyyy-mm-dd hh:mm:ss); for MP2206 only hh:mm was recorded. 14 CASTYEAR Double No No Active 4-digit year the CTD cast was conducted (UTCDATETIME). 15 WATERSAMPLE Text No No Active A discrete water sample was/was not (TRUE/FALSE) collected in conjunction with the CTD cast. 16 OFFSHORE_YN Text No No Active CTD cast was/was not (YES/NO) conducted offshore, where offshore is defined as a cast location (LATITUDE and LONGITUDE) more than 10km away from land (for islands) or the 20m depth contour (for atolls). 17 SURVEY_DESIGN Text No No Active NCRMP survey design associated with the CTD cast. Survey designs include: casts conducted at permanent climate sites (Permanent); casts co-located with fish or benthic stratified random survey sites (Stratified_Random); casts at random sites not associated with climate, benthic, or fish sites (Random); and casts conducted offshore to collect end member data (End_member). 18 PRESSURE_DB Double No No Active Measured pressure value in decibars. 19 DEPTH_M Double No No Active Calculated depth value in meters. 20 TEMP_DEGC Double No No Active Measured temperature value in degrees Celsius. 21 COND_S_PER_M Double No No Active Measured conductivity value in Siemens per meter. 22 SALN_PSU Double No No Active Calculated salinity value in Practical Salinity Units (PSU). Data Set Credit 2021 Organization NOAA Coral Reef Conservation Program CRCP 1305 East West Highway 10th Floor Silver Spring MD 20910-3281 (301) 713-3155 https://coralreef.noaa.gov Link to the NOAA Coral Reef Conservation Program website Online Resource Data Steward 2021 Person Smith, Joy joy.smith@noaa.gov 1845 Wasp Blvd. Honolulu HI 96818 USA 808-725-5531 Distributor 2021 Organization NOAA National Centers for Environmental Information NCEI ncei.info@noaa.gov https://ror.org/04r0wrp59 https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. Online Resource Metadata Contact 2021 Person Luers, Lori H lori.luers@noaa.gov 1845 Wasp Blvd. Honolulu HI 96818 USA 808-725-5593 Originator 2021 Organization Pacific Islands Fisheries Science Center PIFSC pifsc.info@noaa.gov https://ror.org/02apffz65 1845 Wasp Blvd. Honolulu HI 96818 USA 808-725-5360 https://www.pifsc.noaa.gov Pacific Island Fisheries Science Center homepage Online Resource 8:00 a.m. - 4:30 p.m. Point of Contact 2021 Person Smith, Joy joy.smith@noaa.gov 1845 Wasp Blvd. Honolulu HI 96818 USA 808-725-5531 Extent of CTD data collected in Aua Reef via snorkeling during fly-in mission MP2206 (scientists flew into American Samoa conducted surveys) -170.669 -170.665 -14.2717 -14.2881 Extent of CTD casts in Aua reef, American Samoa in 2022. Range 2022-09-13 2022-09-23 MP2206 Time frame over which CTD casts which were conducted at 18 survey sites along a water quality gradient off of Aua, American Samoa Unclassified Not applicable Not applicable NOAA Coral Reef Ecosystem Sciences Division (ESD) Data Sharing Recommendations, version 9.0 updated August 12, 2015: The ESD welcomes the opportunity to collaborate on research issues contributing to the scientific basis for better management of marine ecosystems. The ESD has a very diverse set of field activities that generates large volumes of data using an array of data collection protocols. The following recommendations are for your consideration as you use this data: 1) Data analyses should take all field exigencies into account. The most effective way to do this would be active collaboration with ESD principal investigators. 2) In all presentations, product releases, or publications using data generated by ESD, proper acknowledgement of both ESD and the individuals responsible for data collection is expected. Citing the DOI (if available) is preferred, a non-DOI example is listed below. 3) If you collect or generate data for the same study areas, ESD requests that you share relevant information on complimentary data collections. 4) Those receiving data are strongly urged to inform the ESD Data Management Team of any errors and discrepancies that are discovered during the course of using these data. They are further urged to bring to the attention of the Team all problems and difficulties encountered in using these data. This information is necessary in order to improve the collections and to facilitate more efficient and economical data processing and retrieval. The users are asked to supply copies of any missing data that may be located, and to provide information as to significant subsets and special aggregations of data that are developed in using the material provided. Example citation: "This publication makes use of data products provided by the Coral Reef Ecosystem Sciences Division (ESD), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA), with funding support from the NOAA Coral Reef Conservation Program (CRCP). The analysis and interpretations presented here are solely that of the current authors." Data can be accessed online via the NOAA National Centers for Environmental Information (NCEI) Ocean Archive. None Please cite PIFSC Ecosystem Sciences Division (ESD) when using the data. Suggested Citation: Ecosystem Sciences Division, Pacific Islands Fisheries Science Center, 2023: Shallow Water Conductivity-Temperature-Depth (CTD) Profiles along a water quality gradient in Aua, American Samoa from 2022-09-13 to 2022-09-23, https://www.fisheries.noaa.gov/inport/item/68094. None None https://www.ncei.noaa.gov/archive/accession/0278377 2021 Organization NOAA National Centers for Environmental Information https://ror.org/04r0wrp59 ESD_LBSP_CTD_AUA_2022.csv Shallow CTD profiles collected at 18 sites in Aua, American Samoa from September 13th-23rd, 2022 across a water quality gradient by the PIFSC Ecosystem Sciences Division. Data include conductivity, temperature, pressure, depth, salinity, and density. 2022-12-12T17:07:00 csv (comma-separated values) CSV - Comma Separated Values (Text) 411 KB https://coralreef.noaa.gov/issues/lbsp.html NOAA CRCP Land-based Sources of Pollution Online Resource NOAA CRCP page 'Reduce Land-Based Sources of Pollution'; includes other related links https://www.fisheries.noaa.gov/region/pacific-islands#science PIFSC website Online Resource Overview of research and programs at the Pacific Islands Fisheries Science Center (PIFSC) Raw CTD profile data are downloaded from the RBR and saved as .CSV files. SBE-19plus CTD sensor: Conductivity - measurement range: 0-9 S/m; accuracy: +/- 0.0005 S/m; stability: 0.0003 S/m per month; resolution: 0.00005 S/m; Temperature - measurement range: -5-35 deg C; accuracy: +/-0.005 deg C; stability: 0.0002 deg C per month; resolution: 0.0001 deg C; Pressure - measurement range: 0-600 m; accuracy: +/- 0.1%; stability: +/- 0.1%; resolution: 0.002% Obviously erroneous data have been removed from the final dataset. Missing values are indicated with a blank. The same methods of data collection are used each time a CTD cast is conducted. Conductivity, temperature, pressure, depth, salinity, and density are routinely included in the observation dataset. The data is quality controlled by NOAA PIFSC Ecosystem Sciences Division (ESD) personnel after the data is downloaded from the instruments, prior to and after the data are migrated to the PIFSC enterprise Oracle database, and once again when the data are submitted to the NOAA National Centers for Environmental Information. Yes Unknown Yes No Unknown NCEI-MD Unknown The data is captured in several locations: files stored on the PIFSC network. The PIFSC network is maintained and regularly backed up by PIFSC ITS. Following a 1 minute soak, CTDs are usually deployed 5-10 feet above the reef at depths ranging from 0-5 m at 18 sites along the water quality gradient in Aua, American Samoa established by the NOAA Fisheries, Ecosystem Sciences Division. Sites were selected randomly along a water quality gradient established by local knowledge. RK Hoeke, JM Gove, E Smith, P Fisher-Pool, M Lammers, D Merritt, OJ Vetter, CW Young, KB Wong & RE Brainard (2009) Coral reef ecosystem integrated observing system: In-situ oceanographic observations at the US Pacific islands and atolls, Journal of Operational Oceanography, 2:2, 3-14, DOI: 10.1080/1755876X.2009.12027737 Organization Pacific Islands Fisheries Science Center Originator 2009-01-01 https://doi.org/10.1080/1755876X.2009.12027737 Journal of Operational Oceanography The PIFSC Ecosystem Sciences Division's oceanography team collects data using a variety of methods as described in this paper on in-situ oceanographic observations. Protocol 1 RBRconcerto3 CTD casts were manually collected via a snorkeler. The CTD was held just under the surface (~1m) for 1 minute to cycle water through the instrument and tubing. Afterwards, the CTD was slowly swam down to the reef benthos by the snorkeler. CTD was set in profiler mode and the descent rate was ~0.5 to 0.75 meters per second) to a depth right above the reef (maximum depth of 5m). Once the target depth is reached, the CTD is immediately pulled back on board. A GPS waypoint is taken at the beginning of the cast to mark the position and time. Person Smith, Joy joy.smith@noaa.gov 1845 Wasp Blvd. Honolulu HI 96818 USA 808-725-5531 RK Hoeke, JM Gove, E Smith, P Fisher-Pool, M Lammers, D Merritt, OJ Vetter, CW Young, KB Wong & RE Brainard (2009) Coral reef ecosystem integrated observing system: In-situ oceanographic observations at the US Pacific islands and atolls, Journal of Operational Oceanography, 2:2, 3-14, DOI: 10.1080/1755876X.2009.12027737 2 Raw profile data are downloaded from the CTD and saved as .CSV files. Profiles are then trimmed to downcast only, any erroneous data spikes are filtered out, the surface equilibration period is removed. Person Smith, Joy joy.smith@noaa.gov 1845 Wasp Blvd. Honolulu HI 96818 USA 808-725-5531 RBR Concerto3 CTD logger instrument Conductivity, Temperature and Depth sensor The RBRconcerto³ C.T.D conductivity, temperature and depth logger is our redesigned C.T.D logger built on the years of experience RBR has creating reliable and easy-to-use instruments. The instrument generates salinity and speed of sound internally. The RBRconcerto³ C.T.D is a submersible instrument that is self-contained, accurate and autonomous; it can be deployed for a period of up to 5 years at 1 minute sampling intervals and data is retained in memory even after the batteries are removed. Not Applicable 69889 Entity 67996 Data Set Cross Reference Benthic cover data from the same fly-in mission to Aua, American Samoa 67994 Data Set Cross Reference Benthic photoquadrat imagery from the same fly-in mission to Aua, American Samoa 67995 Data Set Cross Reference Coral Demographic data collected during MP2206, the same fly-in mission to American Samoa to survey Aua 68092 Data Set Cross Reference Non-coral community data from MP2206 fly-in mission to American Samoa to survey Aua reefs 68095 Data Set Cross Reference Water chemistry data from samples collected at the same time as CTD casts during MP2206 fly-in mission to American Samoa to survey Aua reefs gov.noaa.nmfs.inport:68094 Lori Luers 2022-10-25T19:20:38 SysAdmin InPortAdmin 2026-08-28T22:30:28 2023-05-17 Pacific Islands Fisheries Science Center PIFSC 1845 Wasp Blvd. Honolulu HI 96818 USA 808-725-5300 https://www.pifsc.noaa.gov 8:00 a.m. - 4:30 p.m. 1001 Public No No 2021-03-10 1 Year 2022-03-10