Evaluation of National Estuarine Research Reserve
The National Oceanic and Atmospheric Administration (NOAA), Office for Coastal Management will hold a public meeting to solicit comments on the performance evaluation of the Lake Superior National Estuarine Research Reserve.
Consideration of Potential Age-Limiting Observations To Be Used To Compute 2020.00 Reference Epoch Coordinates in the National Spatial Reference System
The National Geodetic Survey (NGS) is considering imposing age limits on the observations that will be used in the creation of 2020.00 Reference Epoch Coordinates (RECs), as part of the modernization of the National Spatial Reference System (NSRS). Due to expected uncertainties in the vertical component of the Intra-Frame Velocity Model (IFVM), the age limits cannot be determined until well-structured, data-driven experiments have been conducted. Such experiments are expected to occur during the 2020 reference epoch adjustment projects (geometric, orthometric and gravimetric), which are scheduled for calendar year 2022. Therefore, NGS requests that users take new Global Navigation Satellite System (GNSS) observations on geodetic control marks of interest, especially those marks that have not been surveyed since January 1, 2010, and share them with NGS before December 31, 2021.
Upcoming Changes to the National Spatial Reference System (NSRS)
The National Geodetic Survey (NGS) is in the process of modernizing the National Spatial Reference System (NSRS) and plans to replace all three North American Datum of 1983 (NAD 83) frames and all vertical datums, including the North American Vertical Datum of 1988 (NAVD 88), with four new terrestrial reference frames and one new geopotential datum to which all geodetic coordinates and derived coordinates within the NSRS will be referenced. The new reference frames will rely primarily on Global Navigation Satellite Systems (GNSS), such as the Global Positioning System (GPS), as well as on a gravimetric geoid model resulting from the Gravity for the Redefinition of the American Vertical Datum (GRAV-D) Project. The modernized NSRS will be easier to access and maintain than the existing NSRS, which relies on physical survey marks that deteriorate over time and will result in new, more accurate, time-tagged geodetic coordinates (i.e., latitude, longitude, ellipsoid height, orthometric height, acceleration of gravity, deflections of the vertical, and others) at all geodetic control points within the NSRS. Additionally, coordinates will be estimated within these frames and datum at five-year reference epochs from the time-tagged coordinates, beginning with 2020.00. Initial completion and rollout of the NSRS modernization is expected to occur between 2022 and 2025, with additional support tools and services rolled out in subsequent years.
Take of Marine Mammals Incidental to Specified Activities; Taking Marine Mammals Incidental to Seabird Research Activities in Central California
NMFS has received a request from Point Blue Conservation Science (Point Blue) for authorization to take marine mammals incidental to seabird research activities in central California. Pursuant to the Marine Mammal Protection Act (MMPA), NMFS is proposing regulations to govern that take, and requests comments on the proposed regulations. NMFS will consider public comments prior to making any final decision on the issuance of the requested MMPA authorization and agency responses will be summarized in the final notice of our decision.