Project: Michigan Technological University Name: Michigan Technological University Email: hmhender@mtu.edu Institution: Michigan Technological University InfoURL: https://www.mtu.edu/greatlakes Source URL: (source database) GLRC Met Tower and Sonde Data Unknown tabular digital data Ann Arbor, MI, USA ERDDAP, version 2.29.0, at Great Lakes Observing System https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html https://seagull-erddap.glos.org/erddap/tabledap/obs_669.graph Michigan Technological University The Great Lakes Research Center Meteorological Station, GLRCMET, has been refurbished and relocated from its previous rooftop installation to the end of the GLRC pier, providing a more representative and unobstructed measurement location over the Portage Waterway. In addition to standard meteorological measurements, the station has been expanded to include an in situ water quality sonde. This system measures critical parameters within the highly dynamic Portage Waterway, including temperature, conductivity, dissolved oxygen, and other biogeochemical indicators. The site is uniquely positioned within a bidirectional flow regime, where water exchange with Lake Superior can occur from both the north and the south entries depending on seiche activity, wind forcing, and broader lake conditions. Together, these observations provide a valuable, co-located atmospheric and aquatic dataset, supporting research on air–water interactions, circulation dynamics, and water quality variability in a complex and understudied coastal system. Funding for the station’s refurbishment and long-term operation is provided by GLOS. Unknown https://www.mtu.edu/greatlakes Unknown Unknown ground condition Complete As needed NaN NaN NaN NaN GCMD Science Keywords (downwelling (fdom) (from) Air air at Battery battery Chlorophyll chlorophyll concentration Conductivity conductivity depth direction Dissolved dissolved downwelling electrical fluorescence Fluorescent fluorescent flux fractional from humidity in Incident lwe mass matter of on organic oxygen pH ph Phycocyanin phycocyanin Precipitation precipitation pressure radiation rate reference Relative relative reported saturation scale sea shortwave shortwave) solar solids Specific speed surface suspended temp temperature Total total Turbidity turbidity voltage Water water Wind wind CF Standard Name Table v77 time longitude latitude air_pressure gross_range_test_quality_flag spike_test_quality_flag rate_of_change_test_quality_flag flat_line_test_quality_flag aggregate_quality_flag air_temperature gross_range_test_quality_flag spike_test_quality_flag rate_of_change_test_quality_flag flat_line_test_quality_flag aggregate_quality_flag depth depth fractional_saturation_of_oxygen_in_sea_water depth lwe_precipitation_rate mass_concentration_of_chlorophyll_in_sea_water depth mass_concentration_of_oxygen_in_sea_water depth depth relative_humidity gross_range_test_quality_flag spike_test_quality_flag rate_of_change_test_quality_flag flat_line_test_quality_flag aggregate_quality_flag sea_water_electrical_conductivity depth sea_water_electrical_conductivity_at_reference_temperature depth sea_water_ph_reported_on_total_scale depth sea_water_temperature gross_range_test_quality_flag spike_test_quality_flag rate_of_change_test_quality_flag flat_line_test_quality_flag aggregate_quality_flag depth sea_water_turbidity depth surface_downwelling_shortwave_flux_in_air depth wind_from_direction gross_range_test_quality_flag spike_test_quality_flag rate_of_change_test_quality_flag flat_line_test_quality_flag aggregate_quality_flag wind_speed gross_range_test_quality_flag spike_test_quality_flag rate_of_change_test_quality_flag flat_line_test_quality_flag aggregate_quality_flag None. The data may be used and redistributed for free but is not intended for legal use, since it may contain inaccuracies. Neither the data contributor, GLOS, NOAA, nor the United States Government, nor any of their employees or contractors, makes any warranty, express or implied, including warranties of merchantability and fitness for a particular purpose, or assumes any legal liability for the accuracy, completeness, or usefulness, of this information. Michigan Technological University Michigan Technological University Unknown Mailing and Physical Address
Unknown
Unknown Unknown Unknown Unknown Unknown hmhender@mtu.edu https://seagull-erddap.glos.org/erddap/tabledap/obs_669.graph Web page to make a customized map or graph of the data HTML Unknown Unknown Unknown Unknown Unknown Unknown Point Point Great Lakes Observing System GLOS Admin Cyberinfrastructure Engineer Mailing and Physical Address
4840 S State Rd
Ann Arbor MI 48108 USA 734-741-2294 support@glos.org ERDDAP, version 2.29.0: get metadata; download data; make graphs and maps. The data may be used and redistributed for free but is not intended for legal use, since it may contain inaccuracies. Neither the data contributor, GLOS, NOAA, nor the United States Government, nor any of their employees or contractors, makes any warranty, express or implied, including warranties of merchantability and fitness for a particular purpose, or assumes any legal liability for the accuracy, completeness, or usefulness, of this information. .asc 1 View OPeNDAP-style ISO-8859-1 comma-separated text. https://docs.opendap.org/index.php/UserGuideOPeNDAPMessages#ASCII_Service https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .croissant 1 Download the dataset croissant schema. https://docs.mlcommons.org/croissant/docs/croissant-spec.html https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .csv 1 Download a ISO-8859-1 comma-separated text table (line 1: names; line 2: units; ISO 8601 times). https://en.wikipedia.org/wiki/Comma-separated_values https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .csv0 1 Download a ISO-8859-1 .csv file without column names or units. Times are ISO 8601 strings. https://en.wikipedia.org/wiki/Comma-separated_values https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .csvp 1 Download a ISO-8859-1 .csv file with line 1: name (units). Times are ISO 8601 strings. https://en.wikipedia.org/wiki/Comma-separated_values https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .das 1 View the dataset's metadata via an ISO-8859-1 OPeNDAP Dataset Attribute Structure (DAS). https://docs.opendap.org/index.php/UserGuideOPeNDAPMessages#Dataset_Attribute_Structure https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .dataTable 1 A JSON file formatted for use with the Google Visualization client library (Google Charts). https://developers.google.com/chart/interactive/docs/reference#dataparam https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .dds 1 View the dataset's structure via an ISO-8859-1 OPeNDAP Dataset Descriptor Structure (DDS). https://docs.opendap.org/index.php/UserGuideOPeNDAPMessages#Dataset_Descriptor_Structure https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .dods 1 OPeNDAP clients use this to download the data in the DODS binary format. https://docs.opendap.org/index.php/UserGuideOPeNDAPMessages#Data_Transmission https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .esriCsv 1 Download a ISO_8859_1 .csv file for ESRI's ArcGIS 9.x and below (separate date and time columns). https://support.esri.com/technical-article/000012745 https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .fgdc 1 View the dataset's UTF-8 FGDC .xml metadata. https://www.fgdc.gov/standards/projects/FGDC-standards-projects/metadata/base-metadata/index_html https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .geoJson 1 Download longitude,latitude,otherColumns data as a UTF-8 GeoJSON .json file. http://wiki.geojson.org/Main_Page https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .htmlTable 1 View a UTF-8 .html web page with the data in a table. Times are ISO 8601 strings. https://www.w3schools.com/html/html_tables.asp https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .iso19115 1 View the dataset's ISO 19115/19139 UTF-8 .xml metadata using the version default for this server. https://en.wikipedia.org/wiki/Geospatial_metadata https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .iso19115_2 1 View the dataset's ISO 19115-2/19139 UTF-8 .xml metadata. https://en.wikipedia.org/wiki/Geospatial_metadata https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .iso19115_3_2016 1 View the dataset's ISO 19115-3:2016 UTF-8 .xml metadata. https://en.wikipedia.org/wiki/Geospatial_metadata https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .iso19139_2007 1 View the dataset's ISO 19139:2007 UTF-8 .xml metadata. https://en.wikipedia.org/wiki/Geospatial_metadata https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .itx 1 Download an ISO-8859-1 Igor Text File. Each response column becomes a wave. https://www.wavemetrics.net/doc/igorman/II-09%20Data%20Import%20Export.pdf https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .json 1 View a table-like UTF-8 JSON file (missing value = 'null'; times are ISO 8601 strings). https://www.json.org/ https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .jsonlCSV 1 View a UTF-8 JSON Lines CSV file without column names (mv = 'null'; times are ISO 8601 strings). https://jsonlines.org/ https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .jsonlCSV1 1 View a UTF-8 JSON Lines CSV file with column names on line 1 (mv = 'null'; times are ISO 8601 strings). https://jsonlines.org/ https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .jsonlKVP 1 View a UTF-8 JSON Lines file with Key:Value pairs (missing value = 'null'; times are ISO 8601 strings). https://jsonlines.org/ https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .mat 1 Download a MATLAB binary file. https://www.mathworks.com/ https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .nc 1 Download a flat, table-like, NetCDF-3 binary file with COARDS/CF/ACDD metadata. https://www.unidata.ucar.edu/software/netcdf/ https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .ncCF 1 Download a NetCDF-3 CF Discrete Sampling Geometries file (Contiguous Ragged Array). https://cfconventions.org/Data/cf-conventions/cf-conventions-1.8/cf-conventions.html#discrete-sampling-geometries https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .ncCFHeader 1 View the UTF-8 header (the metadata) for the .ncCF file. https://linux.die.net/man/1/ncdump https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .ncCFMA 1 Download a NetCDF-3 CF Discrete Sampling Geometries file (Multidimensional Array). https://www.ncei.noaa.gov/netcdf-templates https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .ncCFMAHeader 1 View the UTF-8 header (the metadata) for the .ncCFMA file. https://linux.die.net/man/1/ncdump https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .ncHeader 1 View the UTF-8 header (the metadata) for the NetCDF-3 .nc file. https://linux.die.net/man/1/ncdump https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .nccsv 1 Download a NetCDF-3-like 7-bit ASCII NCCSV .csv file with COARDS/CF/ACDD metadata. https://erddap.github.io/docs/user/nccsv-1.20 https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .nccsvMetadata 1 View the dataset's metadata as the top half of a 7-bit ASCII NCCSV .csv file. https://erddap.github.io/docs/user/nccsv-1.20 https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .ncoJson 1 Download a UTF-8 NCO lvl=2 JSON file with COARDS/CF/ACDD metadata. https://nco.sourceforge.net/nco.html#json https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .odvTxt 1 Download longitude,latitude,time,otherColumns as an ISO-8859-1 ODV Generic Spreadsheet File (.txt). https://odv.awi.de/en/documentation/ https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .parquet 1 Download as a parquet file. Metadata contains column names ("column_names") and units ("column_units"). https://parquet.apache.org/ https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .parquetWMeta 1 Download as a parquet file with detailed metadata. https://parquet.apache.org/ https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .tsv 1 Download a ISO-8859-1 tab-separated text table (line 1: names; line 2: units; ISO 8601 times). https://jkorpela.fi/TSV.html https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .tsv0 1 Download a ISO-8859-1 .tsv file without column names or units. Times are ISO 8601 strings. https://jkorpela.fi/TSV.html https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .tsvp 1 Download a ISO-8859-1 .tsv file with line 1: name (units). Times are ISO 8601 strings. https://jkorpela.fi/TSV.html https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .wav 1 Download a .wav audio file. All columns must be numeric and of the same type. https://en.wikipedia.org/wiki/WAV https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .xhtml 1 View a UTF-8 XHTML (XML) file with the data in a table. Times are ISO 8601 strings. https://www.w3schools.com/html/html_tables.asp https://seagull-erddap.glos.org/erddap/tabledap/obs_669.html .kml 1 View a .kml file, suitable for Google Earth. https://developers.google.com/kml/ https://seagull-erddap.glos.org/erddap/tabledap/obs_669.graph .largePdf 1 View a large .pdf image file with a graph or map. https://www.adobe.com/acrobat/about-adobe-pdf.html https://seagull-erddap.glos.org/erddap/tabledap/obs_669.graph .largePng 1 View a large .png image file with a graph or map. http://www.libpng.org/pub/png/ https://seagull-erddap.glos.org/erddap/tabledap/obs_669.graph .pdf 1 View a standard, medium-sized .pdf image file with a graph or map. https://www.adobe.com/acrobat/about-adobe-pdf.html https://seagull-erddap.glos.org/erddap/tabledap/obs_669.graph .png 1 View a standard, medium-sized .png image file with a graph or map. http://www.libpng.org/pub/png/ https://seagull-erddap.glos.org/erddap/tabledap/obs_669.graph .smallPdf 1 View a small .pdf image file with a graph or map. https://www.adobe.com/acrobat/about-adobe-pdf.html https://seagull-erddap.glos.org/erddap/tabledap/obs_669.graph .smallPng 1 View a small .png image file with a graph or map. http://www.libpng.org/pub/png/ https://seagull-erddap.glos.org/erddap/tabledap/obs_669.graph .transparentPng 1 View a .png image file (just the data, without axes, landmask, or legend). http://www.libpng.org/pub/png/ https://seagull-erddap.glos.org/erddap/tabledap/obs_669.graph None 20260423 Great Lakes Observing System GLOS Admin Cyberinfrastructure Engineer Mailing and Physical Address
4840 S State Rd
Ann Arbor MI 48108 USA 734-741-2294 support@glos.org Content Standard for Digital Geospatial Metadata FGDC-STD-012-2002 universal time None. The data may be used and redistributed for free but is not intended for legal use, since it may contain inaccuracies. Neither the data contributor, GLOS, NOAA, nor the United States Government, nor any of their employees or contractors, makes any warranty, express or implied, including warranties of merchantability and fitness for a particular purpose, or assumes any legal liability for the accuracy, completeness, or usefulness, of this information.