Results 41 to 50 of about 356,118 (174)

Remote Sensing for Irrigation Water Management—The State of the Art and Prospects for Near‐Future Operations

Irrigation and Drainage, EarlyView.
ABSTRACT A recent UN report describes many regions as facing ‘water bankruptcy,’ a condition in which available water resources can no longer meet existing demands. In practice, this means irrigation will likely bear the greatest burden of future water‐use reductions, a complicated and fraught decision to make given its critical role in food security ...
Wim G. M. Bastiaanssen, Chris Perry, Royce Dalby, Yasir Mohamed, Xueliang Cai, Poolad Karimi, IJsbrand de Jong, Pasquale Steduto, Marat Beksultanov, Christopher C. M. Neale, David Molden, Waqas Awan, Laarousi Mohamed, Jippe Hoogeveen, Jeff Davids, Nutchanart Sriwongsitanon, P. S. Rao, Roula Bachour, Palitha Bandara, Sophea Chhim, Richard Evans, Tom Lahad, D. Nagesh Kumar, Zakaria Adawy, Devendra Singh Bundela, Kawa Hakzi, Isaya Kisekka, Nicolas Puelma, Alejandro A. Pannunzio, Benjamin Koetz, Mukhiddin Ibragimov   +30 more
wiley   +1 more source

Time Series Consistency of Passive Microwave Sensors (1978–2023) Brightness Temperature Data for Snow Depth Estimation

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Passive microwave remote sensing offers all-weather, all-day observations, but sensor inconsistencies hinder long-term continuity and multisensor integration for surface parameters estimation. This study proposed methods to improve brightness temperature
Min Wu, Lingmei Jiang, Jianwei Yang, Shengli Wu, Guangjin Liu, Cheng Zhang   +5 more
doaj   +1 more source

Description and Performance of an L-Band Radiometer with Digital Beamforming

Remote Sensing, 2010
This paper presents the description and performance tests of an L-band microwave radiometer with Digital Beamforming (DBF), developed for the Passive Advanced Unit (PAU) for ocean monitoring project.
Juan F. Marchan-Hernandez, Nereida Rodriguez-Alvarez, Enric Valencia, Adriano Camps, Isaac Ramos-Perez, Xavier Bosch-Lluis   +5 more
doaj   +1 more source

RF and Electronics Design of the Compact Ocean Wind Vector Radiometer

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
The Compact Ocean Wind Vector Radiometer (COWVR) was developed at the Jet Propulsion Laboratory as a proof of concept technology demonstration mission for the Air Force. COWVR is a fully polarimetric imaging radiometer system operating at 18.7, 23.8, and
Frank Maiwald, Oliver Montes, Sharmila Padmanabhan, Amy Wu, Zachary Pannell, Violet Torossian, Alireza Bakhshi, Damon Russell, Jordan Tanabe, Hamid Javadi, Chris Holman, Maurice Aghion, Richard Redick, Amarit Kitiyakara, Shannon Brown   +14 more
doaj   +1 more source

Effect of saline irrigation on Tetragonia tetragonioides (Pall.) Kuntze grown on different soil types under greenhouse conditions

Journal of the Science of Food and Agriculture, EarlyView.
Abstract BACKGROUND Climate change and population growth are major challenges for sustainable food production, particularly in regions affected by water scarcity and soil salinization. In this context, halophytes represent promising candidates as alternative and sustainable food crops for salt‐affected areas.
Giulia Atzori, Michele Petrillo, Giulia Mozzo, Simone Bernardi, Stefania Caparrotta, Nadia Bazihizina, Stefano Mancuso, Elisa Masi   +7 more
wiley   +1 more source

Analysis of a microwave radiometer for precise standardization of noise sources

, 1963
Calibration of microwave noise sources requires a standard source, an attenuator, and an instrument for comparing microwave power levels. A modified Dicke radiometer is used for this comparison.
Ward, Gray D., Richardson, John M.
core   +1 more source

New insights into convection‐permitting model simulations from a ZDR$$ {\boldsymbol{Z}}_{\mathbf{DR}} $$ diagnostic for raindrops

Quarterly Journal of the Royal Meteorological Society, EarlyView.
A polarimetric radar forward operator to simulate differential reflectivity (ZDR$$ {Z}_{\mathrm{DR}} $$) from rain was developed to evaluate simulated storms in the Met Office Unified Model (MetUM) for two case days of the Wessex Convection Experiment (WesCon) field campaign. Vertical columns of ZDR$$ {Z}_{\mathrm{DR}} $$, indicative of strong updrafts,
Chun Hay Brian Lo, Thorwald H. M. Stein, Christopher D. Westbrook, Paul R. Field, Kalli Furtado, Robert W. Scovell, Jonathan M. Wilkinson, Timothy Darlington, Humphrey W. Lean, Ryan R. Neely III, Christopher J. Walden   +10 more
wiley   +1 more source

Using microwave imager observations to improve the ocean temperature in a coupled NWP system

Quarterly Journal of the Royal Meteorological Society, EarlyView.
A recent upgrade to the ECMWF IFS has implemented outer‐loop coupling between the atmosphere and the ocean. This work uses this method to pass ocean skin temperature estimates derived from satellite‐borne microwave imagers to the ocean data assimilation system; the updated ocean state is then passed back to the atmospheric system.
Tracy Scanlon, Alan J. Geer, Philip Browne, Patricia de Rosnay, Niels Bormann   +4 more
wiley   +1 more source

A new Microwave Aperture Synthesis Radiometer for Spectral Imaging

, 2007
Our spectral microwave aperture synthesis radiometer system combines the capabilities of high spatial resolution for passive microwave imaging with spectral sensing within a wide frequency range of 1.4 GHz to 6.5 GHz.
Markus Peichl, Jirousek, Matthias, Peichl, Markus, Matthias Jirousek, Süß, Helmut, Helmut Suess   +5 more
core   +1 more source

Coincident cloud observations by altimetry and radiometry [PDF]

, 2004
There are many different sensors that can be used for studies of clouds or rain. However, it is only with Envisat that a dual-frequency altimeter has been comanifested with a high-precision infra-red radiometer. This paper is the first to demonstrate the
Quartly, G., Poulsen, C.
core   +1 more source