M. Janssen

Publications313
h-index42
Citations8,869
Highly Influential Citations411
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Structure in the COBE differential microwave radiometer first year maps
Results of the first year of data from the differential microwave radiometers on the Cosmic Background Explorer are presented. Statistically significant structure that is well described as… Expand
Atmospheric Remote Sensing by Microwave Radiometry
An Introduction to the Passive Microwave Remote Sensing of Atmospheres Absorption of Microwaves by Atmospheric Gases Microwave Radiative Transfer in Hydrometeors Ground-Based Microwave Remote Sensing… Expand
The COBE Mission: Its Design and Performance Two Years after Launch
COBE, NASA's first space mission devoted primarily to cosmology, carries three scientific instruments to make precise measurements of the spectrum and anisotropy of the cosmic microwave background… Expand
TOPEX/Poseidon microwave radiometer (TMR). III. Wet troposphere range correction algorithm and pre-launch error budget
TLDR
The authors describe the development of the statistical, two-step algorithm used for the TMR retrieval of path delay and results indicate that the inherent algorithm error is less than 0.4 cm of retrieved path delay for a global representation of atmospheric conditions. Expand
Subsurface properties and early activity of comet 67P/Churyumov-Gerasimenko
TLDR
Subsurface temperatures showed seasonal and diurnal variations, which indicated that the submillimeter radiation originated at depths comparable to the diurnal thermal skin depth of comet 67P/Churyumov-Gerasimenko. Expand
MIRO: Microwave Instrument for Rosetta Orbiter
The European Space Agency Rosetta Spacecraft, launched on March 2, 2004 toward Comet 67P/Churyumov-Gerasimenko, carries a relatively small and lightweight millimeter-submillimeter spectrometer… Expand
TOPEX/Poseidon Microwave Radiometer (TMR). I. Instrument description and antenna temperature calibration
TLDR
The TMR instrument and the radiometric instrument calibration required to derive antenna temperature (T/sub A/) from the raw digital data are described and a significant improvement over those of the Seasat and Nimbus-G Scanning Multichannel Microwave Radiometer on which TMR is based is described. Expand
Dipole Anisotropy in the COBE Differential Microwave Radiometers First-Year Sky Maps
We present a determination of the cosmic microwave background dipole amplitude and direction from the COBE Differential Microwave Radiometers (DMR) first year of data. Data from the six DMR channels… Expand
Radar: The Cassini Titan Radar Mapper
The Cassini RADAR instrument is a multimode 13.8 GHz multiple-beam sensor that can operate as a synthetic-aperture radar (SAR) imager, altimeter, scatterometer, and radiometer. The principal… Expand
The lakes of Titan
TLDR
These northern-hemisphere lakes constitute the strongest evidence yet that a condensable-liquid hydrological cycle is active in Titan’s surface and atmosphere, in which the lakes are filled through rainfall and/or intersection with the subsurface ‘liquid methane’ table. Expand
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