Results 61 to 70 of about 11,790 (229)

Climate-Quality Calibration for Low Earth-Orbit Microwave Radiometry

Remote Sensing, 2020
Improvements in radiometric calibration are needed to achieve the desired accuracy and stability of satellite-based microwave-radiometer observations intended for the production of climate data records.
Philip W. Rosenkranz, William J. Blackwell, R. Vincent Leslie   +2 more
doaj   +1 more source

PM-GCD – a combined IR–MW satellite technique for frequent retrieval of heavy precipitation [PDF]

Natural Hazards and Earth System Sciences, 2012
Precipitation retrievals based on measurements from microwave (MW) radiometers onboard low-Earth-orbit (LEO) satellites can reach high level of accuracy – especially regarding convective precipitation.
D. Casella, S. Dietrich, F. Di Paola, M. Formenton, A. Mugnai, F. Porcù, P. Sanò   +6 more
doaj   +1 more source

Validation of Atmospheric Absorption Models within the 20–60 GHz Band by Simultaneous Radiosonde and Microwave Observations: The Advantage of Using ECS Formalism

Remote Sensing, 2022
The precise calculation of atmospheric absorption in a microwave band is highly important for atmospheric remote-sensing with ground-based and satellite-borne radiometers, as it is a key element in procedures for temperature, humidity or trace gas ...
Mikhail V. Belikovich, Dmitriy S. Makarov, Evgeny A. Serov, Mikhail Yu. Kulikov, Alexander M. Feigin   +4 more
doaj   +1 more source

Enabling Under Ice Glider Operations: A Backseat Driver Approach

Journal of Field Robotics, EarlyView.
ABSTRACT Polar Oceans are key locations for forcing global ocean circulation, influencing both global climate and biogeochemical cycles. Due to restricted access to these seasonally and perennially ice‐covered regions, these areas are severely undersampled.
Yaomei Wang, Benjamin Allsup, Georgios Salavasidis, Stephen Woodward, Adeniyi Adenaya, Mike Smart, Alexis Johnson, Felipe Marques Dos Santos, Jake Ludgate, Daniel Matterson, Alvaro Lorenzo, J. Alexander Brearley, Alexander Brian Phillips   +12 more
wiley   +1 more source

Bipolarization L-band microwave radiometer [PDF]

ITM Web of Conferences, 2019
A new bipolarization L-band microwave radiometer designed to measure soil moisture from an unmanned helicopter is presented. The schematic of the radiometer and an overview of the radiometer parts circuits are considering. The main features of the implementation of circuit and technical solutions are considered.
Gudkov A., Leushin V., Agasieva S., Sidorov I.   +3 more
openaire   +3 more sources

The underappreciated roles of fog and dew on vegetation and biocrusts

New Phytologist, EarlyView.
Summary Fog and dew represent minor components of ecosystem water budgets in most ecosystems. However, fog and dew can play an essential role in ecosystem dynamics and are particularly important for water‐limited systems. In addition to serving as direct water inputs, fog and dew can influence microclimate and water redistribution, thereby promoting ...
Lixin Wang, Yue Li, Mengyun Sun, Na Qiao
wiley   +1 more source

Tracking Water Dynamics of a Temperate Forest Under Drought and Non‐Drought Conditions Using Active and Passive Microwave and Optical Remote Sensing

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 5, May 2026.
Abstract Water status, water dynamics, and ecohydrological resilience of a protected German beech forest during the 2018–2020 multi‐year drought are assessed using over six years of multi‐frequency remote sensing data, integrating active, passive, and optical sensors with varying canopy penetration depths, highlighting the importance of monitoring ...
Florian M. Hellwig, Anke Fluhrer, Clémence Dubois, Konstantin Schellenberg, David Chaparro, Markus Zehner, Anne Klosterhalfen, María Piles, Christiane Schmullius, Harald Kunstmann, Thomas Jagdhuber   +10 more
wiley   +1 more source

Multi‐Sensor Spatiotemporal Fusion for 30‐m Daily Gapless Snow Cover Mapping

Water Resources Research, Volume 62, Issue 5, May 2026.
Abstract High spatiotemporal resolution remote sensing data is crucial for monitoring heterogeneous mountainous snow cover. Although spatiotemporal fusion presents a promising approach for high‐resolution snow monitoring, cloud contamination and sparse observations remain a critical constraint on its large‐scale and long‐term implementation. To address
Jinhang Wu, Xueliang Zhang, Pengfeng Xiao, Yumeng Jia, Bo Tang, Yan Liu   +5 more
wiley   +1 more source

Sensitivity of microwave radiometers with square - law and linear detectors

Journal of Telecommunications and Information Technology, 2004
Stochastic analysis of modulation microwave radiometers with square - law and linear detectors is presented in the paper. Assuming ideal detector characteristics it is shown that in typical applications, i.e., in very low power measurements, a type of ...
Bronisław Stec, Andrzej Dobrowolski, Waldemar Susek   +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