A radar altimeter's normalized backscatter, σ, is used in many oceanographic applications, to infer values of wind speed, wind stress, rain rate and the presence of biogenic slicks. The waveform retracker used to estimate the key geophysical variables for the altimeters on the Jason-1 and Jason-2 satellites shows increased small-scale variability since the problem is ill-conditioned. A simple e...

The normalized backscatter from a radar altimeter, σ, is a measure of the surface roughness at scales of a few radar wavelengths; over the ocean this is used to infer wind speed. Long-term studies of wind speed rely on consistent measurements within an altimetric mission and good intercalibration between missions. For the Jason-1 and Jason-2 altimeters the derivation of σ from the full waveform...

Abstract. A total of 13 satellite missions have been launched since 1985, with different types radar altimeters on board. This study intends to make a comprehensive evaluation historic and currently operational altimetry for lake water level retrieval over the same set lakes develop strategy constructing consistent long-term records inland at global scale. The estimates produced by retracking a...

The resolutions of current global altimetric gravity models and mean sea surface are around 12 km wavelength resolving 6 features, for many years it has been difficult to improve the resolution further in a systematic way. For both Jason 1 2, Geodetic Mission (GM) carried out as part Extension-of-Life phase. GM Jason-1 lasted 406 days. Jason-2 was planned provide ground-tracks with spacing 4 af...

Jason-2 was launched on June 20, 2008. The main payload of is a radar altimeter that measures, among other variables, significant wave height (SWH) and surface wind speed. To compliment the 25-year reference altimetry record, left its orbit to younger sibling Jason-3 which January 17, 2016 became operational October 14, 2016. then moved another location same till July 2017 when it new long-repe...

Using a 25-y time series of precision satellite altimeter data from TOPEX/Poseidon, Jason-1, Jason-2, and Jason-3, we estimate the climate-change-driven acceleration of global mean sea level over the last 25 y to be 0.084 ± 0.025 mm/y2 Coupled with the average climate-change-driven rate of sea level rise over these same 25 y of 2.9 mm/y, simple extrapolation of the quadratic implies global mean...

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SURGICAL PATHOLOGY CLINICS www.surgpath.theclinics.com Consulting Editor JASON L. HORNICK June 2021 • Volume 14 Number 2