Results 81 to 90 of about 605,555 (344)

Raytracing Simulated GPS Radio Wave Propagation Paths Experiencing Large Disturbances When Going through the Top of the Sub-Cloud Layer

Remote Sensing, 2021
Global positioning satellite system (GPS) radio waves that reach the tropical lower troposphere are strongly affected by small-scale water vapor fluctuations.
Shengpeng Yang, Xiaolei Zou, Richard Anthes   +2 more
doaj   +1 more source

Bacteria‐Responsive Nanostructured Drug Delivery Systems for Targeted Antimicrobial Therapy

Advanced Materials, EarlyView.
Bacteria‐responsive nanocarriers are designed to release antimicrobials only in the presence of infection‐specific cues. This selective activation ensures drug release precisely at the site of infection, avoiding premature or indiscriminate release, and enhancing efficacy.
Guillermo Landa, Gracia Mendoza, Silvia Irusta, Manuel Arruebo   +3 more
wiley   +1 more source

High‐resolution atmospheric CO2 concentration data simulated in WRF‐Chem over East Asia for 10 years

Geoscience Data Journal
In this study, high‐resolution CO2 concentration data were generated for East Asia to analyse long‐term changes in atmospheric CO2 concentrations, as East Asia is an important region for understanding the global carbon cycle.
Min‐Gyung Seo, Hyun Mee Kim, Dae‐Hui Kim   +2 more
doaj   +1 more source

Implicit particle methods and their connection with variational data assimilation

, 2012
The implicit particle filter is a sequential Monte Carlo method for data assimilation that guides the particles to the high-probability regions via a sequence of steps that includes minimizations.
Alexandre J. Chorin, Arulampalam, Bennet, Bickel, Buehner, Cappé, Carpenter, Chorin, Chorin, Chorin, Chorin, Chorin, Conn, Cornebise, Courtier, Courtier, Dimet, Doucet, Doucet, Ethan Atkins, Evensen, Evensen, Evensen, Fedorenko, Fertig, Fletcher, Fournier, Geweke, Goodman, Gordon, Hammersley, Hunt, Johansen, Kalman, Kalman, Kalnay, Kalnay, Kalos, Kass, Kass, Kloeden, Kurapov, Liu, Liu, Liu, Liu, Lorenz, Matthias Morzfeld, Miller, Moral, Morzfeld, Morzfeld, Nocedal, Pitt, Rabier, Smith, Smídl, Snyder, Talagrand, Talagrand, Tremolet, van Leeuwen, van Leeuwen, Zupanski   +63 more
core   +3 more sources

Estimating the uncertainty of areal precipitation using data assimilation [PDF]

, 2019
We present a method to estimate spatially and temporally variable uncertainty of areal precipitation data. The aim of the method is to merge measurements from different sources, remote sensing and in situ, into a combined precipitation product and to ...
Ament, F., Clemens, M., Geppert, G., Merker, C.   +3 more
core   +1 more source

On the mathematics of data assimilation

Tellus, 1981
The problem of convergence of a “forward-backward” assimilation is considered for the most general dynamical system. Using elementary techniques of stability theory, it is shown that the variation, over one assimilation cycle, of the difference between the assimilating model and the state to be reconstructed is, to the first order, determined by a ...
openaire   +3 more sources

Formation of Q‐Carbon Nanoballs and Nanodiamonds by Pulsed Laser Annealing of Patterned Polymer Structures

Advanced Materials Interfaces, EarlyView.
2D and 3D patterned structures of Q‐carbon nanoballs and nanodiamonds have been created by laser writing of polymers, carbonization, and pulsed laser annealing. Polymeric structures are prepared by using a direct‐laser‐writing (DLW) process involving two‐photon polymerization (2PP). Patterned nanodiamond and Q‐carbon growth over large areas is obtained
Sumeer Khanna, Kishan Kumawat, Jagdish Narayan, Roger Narayan   +3 more
wiley   +1 more source

Sensitivity And Out-Of-Sample Error in Continuous Time Data Assimilation

, 2011
Data assimilation refers to the problem of finding trajectories of a prescribed dynamical model in such a way that the output of the model (usually some function of the model states) follows a given time series of observations.
Apte, Boccaletti, Bröcker, Cardinali, Courtier, Derber, Hastie, Jazwinsky, Judd, Kierzenka, Le Dimet, Liu, Liu, Lorenz, Lorenz, Nijmeirer, Parlitz, Pereyra, Sage, Seaman, Szendro, Zeitouni, Åström   +22 more
core   +1 more source

Simple and Environmentally Friendly Solution Synthesis of CsPbI3 Nanoribbons: Investigating the Reversible δ‐ to γ‐Phase Transition

Advanced Photonics Research, EarlyView.
Cesium lead iodide (CsPbI3) nanoribbons obtained through mild condition synthesis are herein reported without surfactant species and toxic solvent starting from β‐diketonate complexes of Cs and Pb. The morphological and structural features, together with the thermal stability and phase transitions from the yellow δ to the black α and γ‐CsPbI3 phases ...
Lorenzo Sirna, Anna Lucia Pellegrino, Luca Pulvirenti, Maria Miritello, Vanna Torrisi, Giuseppe Bengasi, Marina Foti, Graziella Malandrino   +7 more
wiley   +1 more source

Unveiling Energy Conversions of the Venus Atmosphere by the Bred Vectors

Geophysical Research Letters
The Lorenz energy cycle was often used to analyze energy conversions related to instabilities in planetary atmospheres using zonal means as basic states.
Jianyu Liang, Norihiko Sugimoto, Takemasa Miyoshi   +2 more
doaj   +1 more source