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eebo-0021

Meteorological instruments

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Travels for geographical studies made it necessary, to establish elevations height, to refer all the heights to same surface to which to attribute the zero level, to compare results. At first sea surface was thought, but it is neither the same nor constant throughout the Earth and it varies over time. From 17th century measure protocols were proposed, but only in 19th century, using tide gauges with automatic recording, reliable measures series were obtained to establish a methodology to define tide level zero. From that moment procedures and devices improved to current satellite instruments.

Marine meteorological services. --- Marine meteorological services

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The Department of Commerce's National Oceanic and Atmospheric Administration (NOAA), with the aid of the National Aeronautics and Space Administration (NASA), plans to procure the next generation of geostationary operational environmental satellites, called the Geostationary Operational Environmental Satellites-R series (GOES-R). This series is considered critical to the United States' ability to maintain the continuity of data required for weather forecasting through the year 2028. GAO was asked to (1) assess the status and plans for GOES-R, and (2) evaluate whether NOAA is adequately mitigating key technical and programmatic risks. To do so, GAO analyzed contractor and program data and interviewed officials from NOAA and NASA.

Meteorological satellites --- Satellite meteorology.

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Meteorological satellites --- Noise.

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Meteorological satellites --- Satellite meteorology