English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Nadir-looking microwave radiometers are flown on altimeter missions to correct the altimeter range for water vapor path delay. This paper describes a technique to intercalibrate the brightness temperatures of the ERS-1 and ERS-2 microwave radiometers by using the TOPEX radiometer as a common reference. The technique is based on the analysis of radiometer measurements made at crossover points between TOPEX, ERS-1, and ERS-2 orbits with less than 1-h time lags. This provides about 1000 comparison points within 4 months and covers most atmospheric and oceanic states. It is shown first that the ERS-2 radiometer brightness temperatures need to be corrected to make them consistent with ERS-1 and thus to ensure the homogeneity of the series of ERS altimeter data. The accuracy of the method is then estimated from the results of a 3-yr TOPEX/ERS-1 data comparison and is shown to be about 0.2 K for the ERS-2 23.8-GHz channel and about 0.4 K for the 36.5-GHz channel. This 3-yr comparison also shows a −1 mm ...

A Comparison of the Brightness Temperatures and Water Vapor Path Delays Measured by the TOPEX,ERS-1,andERS-2Microwave Radiometers