[1] A global comparison of altimeter and ERA-40 mean wave period data is performed for the first time. Altimeter and ERA-40 mean wave period are shown to compare well in non-swell-dominated conditions. Triply collocated altimeter, buoy, and ERA-40 data show that the variance of the random errors is bigger for the ERA-40 data and smaller for the buoy data. A new expression is given to relate alt...

The long-term sea level change during 1993 – 2008 is investigated in the Malaysian Seas from satellite altimetry data of the Topex, Jason-1, ERS-1, ERS-2 and Envisat missions. During the past two decades, satellite altimeter has provided its capability in measuring the global mean of sea level with precision better than 1 mm/year. Sea level data retrieval and reduction were carried out using Ra...

Climate studies require long data records extending the lifetime of a single remote sensing satellite mission. Precise satellite altimetry exploring global and regional evolution of the sea level has now completed a two decade data record. A consistent long-term data record has to be constructed from a sequence of different, partly overlapping altimeter systems which have to be carefully cross-...

Surface measurements in tropical cyclones (TCs) are difficult to obtain and only microwave sensors below 15 Ghz can penetrate the deep convective clouds surrounding the areas where surface winds are the largest (Quilfen et al., 2007). These kind of measurements are crucial to complement the Dvorak TC intensity analysis as obtained from infrared/visible measurements (Velden and Coauthors, 2006)....

After GLAS (Geo-science Laser Altimeter System) loaded on the ICESat (Ice Cloud and land Elevation Satellite), satellite laser altimeter attracts more and more attention. ZY3-02 equipped with the Chinese first satellite laser altimeter has been successfully launched on 30 May, 2016. The geometric calibration is an important step for the laser data processing and application. The method to calcu...

Satellite altimetry provides a precise measure of the vertical distance of the satellite borne altimeter to the instantaneous sea surface. The accuracy of this distance depends on the calibration of the altimeter, the quality of the reflecting target and the proper estimate of path delay. The general design characteristics for absolute altimeter calibration imply a large number of measurements ...

A large global compilation of altimeter and scatterometer satellite crossover samples is used to address altimeter wind speed inversion. The emphasis here is altimeter wind error due to sea state impacts. Numerous past studies have suggested that long-scale gravity waves, which do not adjust to wind as quickly as the short gravity-capillary waves, have a measurable influence on interpretation o...

-Barometer is a well-organized tool for determining atmospheric pressure. The altimeter is a tool which calculates the vertical distance in accordance with a reference level. The barometric altimeter, computes the altitude according to the atmospheric pressure. Accuracy and size are the major issues in altimetry. On the other hand the present day altimeters employing conventional pressure senso...

Satellite radar altimeter plays an important role in ocean remote sensing. In China an altimeter will be embarked on the forthcoming HY-2 satellite, which can bring significant benefits to international altimetry society. Modern altimeters adopt I/Q demodulators to detector sea echoes, so the imbalances between the in-phase (I) and quadrature (Q) channels introduce errors on altimeter parameter...