Meteorological data from Grizzly Bay, California, 2020

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Frequently anticipated questions:

What does this data set describe?

Title: Meteorological data from Grizzly Bay, California, 2020
Abstract:
Meteorological data, including wind speed, wind direction, air temperature, relative humidity, and air pressure, were collected by the U.S. Geological Survey (USGS) Pacific Coastal and Marine Science Center at a site located in Grizzly Bay, California. A Vaisala WXT530 meteorological station was mounted atop of a dolphin-type mooring structure, from January to June 2020. The data were truncated based on deployment and recovery times of hydrodynamic time-series data, spurious data points from the wind sensor were removed, and the file was written to netCDF. Spurious points were identified based on a recorded wind speed of 0. These points were set to NaN (Not a Number). Users are advised to assess data quality carefully, and to check metadata for additional instrument information.
Supplemental_Information:
Additional information about the field activity from which these data were derived is available online at:
https://cmgds.marine.usgs.gov/fan_info.php?fan=2020-603-FA
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
  1. How might this data set be cited?
    Stevens, Andrew W., McGill, Samantha C., and Lacy, Jessica R., 20210915, Meteorological data from Grizzly Bay, California, 2020: data release doi:10.5066/P9N88U5G, U.S. Geological Survey, Pacific Coastal and Marine Science Center Santa Cruz, California.

    Online Links:

    This is part of the following larger work.

    McGill, Samantha C., Lacy, Jessica R., Joanne C. T. Ferreira, Allen, Rachel M., WinklerPrins, Lukas, Stevens, Andrew W., and Tan, Angela C., 2021, Hydrodynamic and sediment transport data from San Pablo Bay and Grizzly Bay, California, 2020: data release doi:10.5066/P9N88U5G, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, California.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -122.0398
    East_Bounding_Coordinate: -121.0398
    North_Bounding_Coordinate: 38.1172
    South_Bounding_Coordinate: 38.1172
  3. What does it look like?
    https://www.sciencebase.gov/catalog/file/get/60a4561ad34ea221ce45ede7?name=IMG_0682.jpg&allowOpen=true (jpg)
    Image of USGS meteorological station mounted atop a dolphin-type mooring structure in Grizzly Bay, California.
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 22-Jan-2020
    Ending_Date: 23-Jun-2020
    Currentness_Reference:
    Ground condition at time data were collected.
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: NetCDF files
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      Indirect_Spatial_Reference:
      Data were collected continuously at survey location in Grizzly Bay, California. Refer to self-contained NetCDF file for more location information.
    2. What coordinate system is used to represent geographic features?
      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 1.0E-5. Longitudes are given to the nearest 1.0E-5. Latitude and longitude values are specified in Decimal degrees. The horizontal datum used is World Geodetic System 1984 (WGS84).
      The ellipsoid used is WGS84.
      The semi-major axis of the ellipsoid used is 6378137.0.
      The flattening of the ellipsoid used is 1/298.257223563.
  7. How does the data set describe geographic features?
    Entity_and_Attribute_Overview:
    NetCDF files are self-contained and attribute information may be found in the header of the file itself.
    Entity_and_Attribute_Detail_Citation:
    The entity and attribute information was generated by the individual and/or agency identified as the originator of the data set. Please review the rest of the metadata record for additional details and information.

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Andrew W. Stevens
    • Samantha C. McGill
    • Jessica R. Lacy
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
    U.S. Geological Survey, Pacific Coastal and Marine Science Center
    Attn: PCMSC Science Data Coordinator
    2885 Mission Street
    Santa Cruz, CA
    US

    831-427-4747 (voice)
    pcmsc_data@usgs.gov

Why was the data set created?

These data were collected to measure the meteorological forces that can impact local hydrodynamics and other important properties related to this study. They were collected as part of a collaborative study with the USGS California Water Science Center and the USGS Water Resource Mission Area investigating physical and biological controls on bed erodibility. These data are intended for science researchers, students, policy makers, and the general public.

How was the data set created?

  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
    Date: 22-Jan-2020 (process 1 of 4)
    A Vaisala WXT530 meteorological station was mounted on top of a dolphin-type mooring structure located in Grizzly Bay, California, from January to June 2020. Meteorological data collected included wind speed, wind direction, air temperature, relative humidity, and air pressure.
    Date: 23-Jun-2020 (process 2 of 4)
    Meteorological station was retrieved from Grizzly Bay dolphin mooring.
    Date: 20-May-2021 (process 3 of 4)
    The data file was post processed in MATLAB. The data file was truncated based on deployment and recovery times, spurious data points from the wind sensor were removed, and the file was written to netCDF. Spurious points were identified based on a recorded wind speed of 0. These points were set to NaN (Not a Number). Rainfall data looked erroneous and were removed.
    Date: 14-Oct-2021 (process 4 of 4)
    Edited metadata to correct spelling of originator names in Larger Work section. Performed minor edits to the metadata to correct typos. No data were changed. Person who carried out this activity:
    U.S. Geological Survey
    Attn: Susan A. Cochran
    Geologist
    2885 Mission Street
    Santa Cruz, CA

    831-460-7545 (voice)
    scochran@usgs.gov
  3. What similar or related data should the user be aware of?

How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?
    No formal attribute accuracy tests were conducted.
  2. How accurate are the geographic locations?
    Horizontal accuracy derived from GPS instrumentation is less than 3 m.
  3. How accurate are the heights or depths?
    Height of sensor measured as 4.93 m above sea level at 18:35 on Jan. 22, 2020 (GMT). Height above NAVD88 calculated based on water level measurements at NOAA Station 9415144.
  4. Where are the gaps in the data? What is missing?
    Dataset is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details.
  5. How consistent are the relationships among the observations, including topology?
    No formal logical accuracy tests were conducted. Data fall within expected ranges.

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?
Access_Constraints: none
Use_Constraints:
USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey as the originators of the dataset and in products derived from these data. This information is not intended for navigation purposes.
  1. Who distributes the data set? (Distributor 1 of 1)
    U.S. Geological Survey - ScienceBase
    Denver Federal Center, Building 810, Mail Stop 302
    Denver, CO
    USA

    1-888-275-8747 (voice)
    sciencebase@usgs.gov
  2. What's the catalog number I need to order this data set? These data are available in zipped NetCDF format accompanied by CSDGM FGDC-compliant metadata.
  3. What legal disclaimers am I supposed to read?
    Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty.
  4. How can I download or order the data?
  5. What hardware or software do I need in order to use the data set?
    The downloadable data file has been compressed with the "zip" command and can be unzipped with Winzip or other archive utilites. To utilize these data, the user must have software capable of uncompressing the WinZip file and importing and viewing a NetCDF file. These data can be viewed with the NOAA netCDF file viewer, ncBrowse, which can be downloaded from the internet at https://www.pmel.noaa.gov/epic/java/ncBrowse.

Who wrote the metadata?

Dates:
Last modified: 14-Oct-2021
Metadata author:
PCMSC Science Data Coordinator
U.S. Geological Survey, Pacific Coastal and Marine Science Center
2885 Mission Street
Santa Cruz, CA
United States

831-427-7520 (voice)
pcmsc_data@usgs.gov
Metadata standard:
Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)
This page is <https://cmgds.marine.usgs.gov/catalog/pcmsc/DataReleases/ScienceBase/DR_P9N88U5G/ERO20_GrizzlyBay_meteorological_metadata.faq.html>
Generated by mp version 2.9.50 on Tue Oct 26 16:49:32 2021