Results 41 to 50 of about 2,770 (190)

Insights From the Alphasat Aldo Paraboni Experiment at Tito Scalo and Spino d'Adda: Characterizing Scintillation and Rain Attenuation at Ka‐ and Q‐Band Frequencies

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT We present experimental results on the relationship between rain attenuation and simultaneous scintillation during rain events, based on beacon signal measurements at 19.7 (Ka‐band) and 39.4 GHz (Q‐band) from the geosynchronous Alphasat satellite (25° E), received at two Italian ground stations, Spino d'Adda (42.1° slant path) and Tito Scalo ...
Miles Turner, Alef Comisso, Carlo Riva, Lorenzo Luini, Giuseppe Codispoti, Giorgia Parca   +5 more
wiley   +1 more source

Drew Rothrock's Fundamental Contributions to Arctic Science

Perspectives of Earth and Space Scientists, Volume 7, Issue 1, December 2026.
Abstract David Andrew (Drew) Rothrock III lived during a period of vigorous scientific research in the Earth Sciences, from the International Geophysical Year to the era of satellites and high‐speed computer modeling. Drew made fundamental contributions to Arctic science, helping to lay the theoretical foundations for modeling the movement and ...
Harry L. Stern, Richard E. Moritz, Michael Steele, Averil Rothrock, Yanling Yu   +4 more
wiley   +1 more source

The EUMETSAT sea ice concentration climate data record [PDF]

The Cryosphere, 2016
An Arctic and Antarctic sea ice area and extent dataset has been generated by EUMETSAT's Ocean and Sea Ice Satellite Application Facility (OSISAF) using the record of microwave radiometer data from NASA's Nimbus 7 Scanning Multichannel Microwave ...
R. T. Tonboe, S. Eastwood, T. Lavergne, A. M. Sørensen, N. Rathmann, G. Dybkjær, L. T. Pedersen, J. L. Høyer, S. Kern   +8 more
doaj   +1 more source

How localized physical processes influence large‐scale phytoplankton blooms near the sea ice edge in the Greenland Sea

Limnology and Oceanography Letters, Volume 11, Issue 5, September 2026.
Abstract The Arctic Ocean has experienced intensifying phytoplankton spring blooms near the sea ice edge. Here, we investigate the drivers of such near‐ice blooms in the Greenland Sea by comparing satellite and in situ observations with the ECCO‐Darwin physical–biogeochemical state estimate.
Abigail P. Heiser, Till J. W. Wagner, Manfredi Manizza, Dustin Carroll, Conner W. Lester, Dimitris Menemenlis   +5 more
wiley   +1 more source

Use of Radiative Transfer Model for Inter-Satellite Microwave Radiometer Calibration

Remote Sensing
This paper describes the benefits of using a microwave radiative transfer model (RTM) to improve the inter-satellite radiometric calibration (XCAL) between two independent satellite microwave radiometers.
Patrick N. De La Llana, Faisal Bin Kashem, W. Linwood Jones   +2 more
doaj   +1 more source

ADC Performance in Microwave Radiometer

Journal of Radio Electronics, 2023
The configuration of a microwave switched radiometer is considered. The grounds that guide developers in determining the requirements for the ADC sampling rate are analyzed. It is shown that the ADC rate can be significantly reduced if an additional analog integrator is installed at the ADC input. Statistical modeling of such a circuit has been carried
D.P. Skulachev, A.S. Kosov
openaire   +1 more source

Anomalous Sea Ice Retreat in the Refreezing Western Arctic by a 30‐Year Record Cyclone in October: Oceanic, Atmospheric, and Wave Influences

Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract An extreme Arctic cyclone (AC) in October 2022 reached a record‐low pressure of 955 hPa and caused unusual wave‐induced sea‐ice breakup in the Canada Basin, making it the strongest event in the western Arctic in 30 years. Here we examine how this event interrupted freeze‐up by quantifying sea‐ice retreat associated with atmospheric and oceanic
Xingkun Xu, Takuji Waseda, Tsubasa Kodaira, Takehiko Nose, Kazutaka Tateyama   +4 more
wiley   +1 more source

An integrated approach toward the incorporation of clouds in the temperature retrievals from microwave measurements [PDF]

Atmospheric Measurement Techniques, 2014
In this paper, we address the characterization of clouds and its inclusion in microwave retrievals in order to study its effect on tropospheric temperature profiles measured by TEMPERA radiometer.
F. Navas-Guzmán, O. Stähli, N. Kämpfer   +2 more
doaj   +1 more source

Vertical Coherence Dominates Decadal Land Water Storage Change Despite Hydroclimatic Extremes and Groundwater Pumping

Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.
Abstract Whether surface and deeper water storage trends move in the same direction underpins assessments of freshwater availability. Theory predicts vertical coherence, yet it is untested globally and questioned under climate extremes and human management. Using depth‐sensitive satellite observations spanning surface soil moisture (SSM) (Soil Moisture
Meng Zhao, Runze Zhang, Geruo A, Dara Entekhabi   +3 more
wiley   +1 more source

Evaluation of Low‐Level Clouds, Temperature, and Surface Radiation Using a Model, Two Reanalyses, and Southern Ocean Observations

Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.
Abstract Low‐level clouds over the Southern Ocean (SO) exert a strong influence on surface radiation, yet their representation in reanalyses and climate models remains uncertain. We evaluated cloud properties and surface radiative fluxes from ERA5, MERRA‐2, and the CAM‐ATRAS model using observations obtained over the SO by Japan's R/V Shirase during ...
Kazutoshi Sato, Jun Inoue, Hitoshi Matsui   +2 more
wiley   +1 more source