Results 61 to 70 of about 8,136,705 (229)

Fluorescent Colored Passive Radiative Cooling Based on Carbon Dots for Cooling Power Recovery

EcoEnergy, EarlyView.
We demonstrate colored passive radiative coolers consisting of a highly reflective porous ceramic base covered by an eco‐friendly luminescent carbon dot‐polymer composite, with two types of carbon dots enabling conversion of either ultraviolet or visible light, respectively.
Lin Liang, Chui Ting Kwok, Maksim Miropoltsev, Kaixin Lin, Elena V. Ushakova, Yang Fu, Wenqi Wang, Hao Li, Dong Lv, Yihao Zhu, Wenjie Liu, Andrey L. Rogach, Chi Yan Tso   +12 more
wiley   +1 more source

Potential of forest height estimation using X band by means of two different inversion scenarios [PDF]

, 2007
Polarimetric SAR Interferometry (Pol-InSAR) is a powerful remote sensing method for forest height estimation by using the random volume over ground model (RVoG).
Hajnsek, Irena, Kugler, Florian, Coscia, Angelo, Papathanassiou, Konstantinos   +3 more
core  

A New Hydroclimatic Signature: Negative NAO Dominance Under Weak La Niña Conditions During the 2025–2026 Northwest Africa Floods

International Journal of Climatology, EarlyView.
Conceptual hydroclimatic pathway linking the concurrent negative North Atlantic Oscillation (NAO) phase and weak La Niña conditions to extreme February rainfall and flash flooding in Northwest Africa. ABSTRACT The winter of 2025–2026 in Morocco exhibited a rapid hydroclimatic transition from prolonged drought to widespread flooding, representing an ...
Afshin Amiri, Silvio Jose Gumiere, Hossein Bonakdari   +2 more
wiley   +1 more source

Deriving Wave Height Using Image Shadow Feature and Extracted Principal Component

Information
Benefiting from the merit of independent calibration without external reference, the shadow feature is investigated to retrieve wave steepness and wave height from X-band marine radar images. However, the wave period is currently required.
Yang Meng, Jinda Wang, Tao Zhou, Fei Niu, Yanbo Wei   +4 more
doaj   +1 more source

ERA5 Can Overstate Changes in the Frequency of Extreme Heat: A New Zealand Case Study

International Journal of Climatology, EarlyView.
ERA5 reproduces broad patterns of summer warming across New Zealand but underestimates temperature variability and warm‐tail extremes, biasing estimates of extreme heat risk. ABSTRACT Summertime temperature extremes exert profound impacts on human health, ecosystems, and infrastructure, yet their characteristics and drivers remain poorly quantified in ...
Sayed Waseem Iqbal, Luke J. Harrington, Hamish Lewis   +2 more
wiley   +1 more source

Detecting bird movements with L‐band avian radar and S‐band dual‐polarization Doppler weather radar

Remote Sensing in Ecology and Conservation, 2019
Marine surveillance radars with X‐band (3‐cm) and S‐band (10‐cm) wavelengths not only detect birds but also record return from insects, rain, ground objects and rough seas that often make discrimination of echoes from birds difficult.
Sidney A. Gauthreaux Jr, Ann‐Marie Shapiro, Dave Mayer, Barry L. Clark, Edwin E. Herricks   +4 more
doaj   +1 more source

High-Isolation X-Band Marine Radar Antenna Design

IEEE Transactions on Antennas and Propagation, 2014
This paper presents a high-isolation printed antenna array for marine radar applications. The antenna array is composed of 32 identical square microstrip patches operated at a center frequency of 9.35 GHz and includes a 100-MHz bandwidth (subject to a 1.5:1 voltage standing wave ratio [VSWR]). The patch antennas are arranged in four arms, each of which
openaire   +1 more source

A Sequential One‐Pot Block Copolymer Synthesis: Toward Mesoporous Carbon Materials for Selective CO2 Adsorption

Macromolecular Rapid Communications, EarlyView.
A sequential one‐pot photo‐iniferter RAFT method greatly simplifies the synthesis of PAN‐based block copolymers, offering quick access to hierarchically porous, N‐doped carbon membranes. This scalable and reliable process allows for easy fabrication of functional materials important for carbon capture applications.
Björn Schmidt, Stefan Heißler, Alexei Nefedov, Jakob Becker, Udo Geckle, Simon Buchheiser, Frank Rhein, Tao Chen, Patrick Théato, Martina Plank   +9 more
wiley   +1 more source

Precipitation Induced Signatures in SAR Images [PDF]

, 2009
Active microwave SAR imaging of the Earth’s surface is commonly considered to be of all weather capability. However, as the operating frequencies of SAR-systems are increasing, visible image distortions due to heavy precipitation in SAR-images are ...
Chandra, Madhu, Danklmayer, Andreas
core  

X-band Extinction in Boreal Forest: Estimation by Using E-SAR PolInSAR and HUTSCAT [PDF]

, 2007
In this paper we study the extinction coefficient of boreal forest by utilizing airborne E-SAR X-band POLInSAR and HUTSCAT X band profiling scatterometer measurements.
Praks, Jaan, Konstantinos P. Papathanassiou, Florian Kugler, Jaan Praks, Kugler, Florian, Papathanassiou, Konstantinos, Martti Hallikainen, Hallikainen, Martti   +7 more
core   +1 more source