Results 31 to 40 of about 1,031,036 (328)

The Aerosol Module in the Community Radiative Transfer Model (v2.2 and v2.3): accounting for aerosol transmittance effects on the radiance observation operator [PDF]

Geoscientific Model Development, 2022
The Community Radiative Transfer Model (CRTM), a sensor-based radiative transfer model, has been used within the Gridpoint Statistical Interpolation (GSI) system for directly assimilating radiances from infrared and microwave sensors.
C.-H. Lu, C.-H. Lu, Q. Liu, S.-W. Wei, S.-W. Wei, B. T. Johnson, C. Dang, P. G. Stegmann, D. Grogan, G. Ge, G. Ge, M. Hu, M. Lueken, M. Lueken   +13 more
doaj   +1 more source

Cover crops affect soybean yield components, but not grain quality

Agronomy Journal, Volume 114, Issue 6, Page 3193-3205, November/December 2022., 2022
Abstract Cover cropping is mainly used to prevent soil erosion, but the effects of individual cover crops on the subsequent soybean [Glycine max (L.) Merr.] are hardly known. Therefore, two annual field trials with 15 cover crop species and bare fallow as control were conducted in semi‐arid East Austria in 2016 and 2017.
Pia Euteneuer, Helmut Wagentristl, Reinhard W. Neugschwandtner, Stefan Pauer, Matthias Keimerl, Hans‐Peter Piepho, Siegrid Steinkellner   +6 more
wiley   +1 more source

The role of heat wave events in the occurrence and persistence of thermal stratification in the southern North Sea [PDF]

Natural Hazards and Earth System Sciences, 2022
Temperature extremes not only directly affect the marine environment and ecosystems but also indirectly influence hydrodynamics and marine life. In this study, the role of heat wave events in the occurrence and persistence of thermal stratification was ...
W. Chen, J. Staneva, S. Grayek, J. Schulz-Stellenfleth, J. Greinert   +4 more
doaj   +1 more source

Effects of fused and blended fertilizers on maize yield and soil properties

Agronomy Journal, Volume 114, Issue 6, Page 3429-3444, November/December 2022., 2022
Abstract The deficiency of secondary and micronutrients negatively affects plant metabolic functions and reduces crop yields. These nutrients are applied in small quantities (<10 kg ha−1) and are physically blended or chemically fused with primary nutrients to enhance uniformity of application.
Bijesh Maharjan, Saurav Das, Charles A. Shapiro   +2 more
wiley   +1 more source

Ultra Rapid Data Assimilation Based on Ensemble Filters

Frontiers in Applied Mathematics and Statistics, 2018
The goal of this work is to analyse and study an ultra-rapid data assimilation (URDA) method for adapting a given ensemble forecast for some particular variable of a dynamical system to given observation data which become available after the standard ...
Roland Potthast, Roland Potthast, Christian A. Welzbacher   +2 more
doaj   +1 more source

Sampling error of observation impact statistics [PDF]

Tellus: Series A, Dynamic Meteorology and Oceanography, 2014
An observation impact is an estimate of the forecast error reduction by assimilating observations with numerical model forecasts. This study compares the sampling errors of the observation impact statistics (OBIS) of July 2011 and January 2012 using two ...
Sung-Min Kim, Hyun Mee Kim
doaj   +1 more source

Maize–soybean intercropping: A bibliometric analysis of 30 years of research publications

Agronomy Journal, Volume 114, Issue 6, Page 3377-3388, November/December 2022., 2022
Abstract Maize (Zea may L.)–soybean [Glycine max (L.) Merr.] intercropping is popular in many countries because of its high productivity. However, no studies have explored maize–soybean intercropping via bibliometric methods. Taking the Web of Science database, the visualization applications of CiteSpace and VOSviewer were used to visually analyze the ...
Liang Feng, Haiying Tang, Tian Pu, Guopeng Chen, Bing Liang, Wenyu Yang, Xiaochun Wang   +6 more
wiley   +1 more source

Continuous Data Assimilation with Stochastically Noisy Data [PDF]

, 2014
We analyze the performance of a data-assimilation algorithm based on a linear feedback control when used with observational data that contains measurement errors.
Bessaih, Hakima, Olson, Eric, Titi, E. S.   +2 more
core   +3 more sources

Data Assimilation in Reduced Modeling [PDF]

SIAM/ASA Journal on Uncertainty Quantification, 2017
We consider the problem of optimal recovery of an element $u$ of a Hilbert space $\mathcal{H}$ from $m$ measurements obtained through known linear functionals on $\mathcal{H}$. Problems of this type are well studied \cite{MRW} under an assumption that $u$ belongs to a prescribed model class, e.g. a known compact subset of $\mathcal{H}$.
Binev, Peter, Cohen, Albert, Dahmen, Wolfgang, Devore, Ronald, Petrova, Guergana, Wojtaszczyk, Przemyslaw   +5 more
openaire   +6 more sources

Data assimilation in price formation [PDF]

Inverse Problems, 2020
Abstract We consider the problem of estimating the density of buyers and vendors in a nonlinear parabolic price formation model using measurements of the price and the transaction rate. Our approach is based on a work by Puel (Puel J-P 2002 C. R. Acad.
Martin Burger, Jan-Frederik Pietschmann, Marie-Therese Wolfram   +2 more
openaire   +4 more sources