Results 21 to 30 of about 388 (206)

Trivariate Spectral Collocation Approach for the Numerical Solution of Three-Dimensional Elliptic Partial Differential Equations

Mathematics, 2022
This article is concerned with the numerical solution of three-dimensional elliptic partial differential equations (PDEs) using the trivariate spectral collocation approach based on the Kronecker tensor product.
Musawenkhosi Patson Mkhatshwa, Melusi Khumalo   +1 more
doaj   +1 more source

Comparison of decadal water storage trends from common GRACE releases (RL05, RL06) using spatial diagnostics and a modified triple collocation approach

Journal of Hydrology X, 2021
GRACE (Gravity Recovery and Climate Experiment) and GRACE-FO (Follow-On) satellites have provided unique insights into the evolution of Terrestrial Water Storage (TWS) in space and time.
Emad Hasan, Aondover Tarhule
doaj   +1 more source

Evaluation of Assumptions in Soil Moisture Triple Collocation Analysis

Journal of Hydrometeorology, 2014
Abstract Triple collocation analysis (TCA) enables estimation of error variances for three or more products that retrieve or estimate the same geophysical variable using mutually independent methods. Several statistical assumptions regarding the statistical nature of errors (e.g., mutual independence and orthogonality with respect to the
Yilmaz, M. Tugrul, Crow, Wade T.
openaire   +2 more sources

Recent advances in (soil moisture) triple collocation analysis

International Journal of Applied Earth Observation and Geoinformation, 2016
Abstract To date, triple collocation (TC) analysis is one of the most important methods for the global-scale evaluation of remotely sensed soil moisture data sets. In this study we review existing implementations of soil moisture TC analysis as well as investigations of the assumptions underlying the method.
A. Gruber, C.-H. Su, S. Zwieback, W. Crow, W. Dorigo, W. Wagner   +5 more
openaire   +1 more source

The Effect of Error Non-Orthogonality on Triple Collocation Analyses

Remote Sensing, 2022
Triple collocation analysis is an established technique for calculating the relative linear intercalibration coefficients and observation error variances for physical quantities measured simultaneously in space and time by three different observation ...
Jur Vogelzang, Ad Stoffelen, Anton Verhoef   +2 more
doaj   +1 more source

An Improved Triple Collocation Analysis Algorithm for Decomposing Autocorrelated and White Soil Moisture Retrieval Errors [PDF]

Journal of Geophysical Research: Atmospheres, 2017
AbstractIf not properly account for, autocorrelated retrieval errors can lead to inaccurate results in soil moisture data analysis and reanalysis. Here we propose a more generalized form of the triple collocation analysis algorithm (GTC) capable of decomposing the total error variance of remotely sensed surface soil moisture retrievals into their ...
Jianzhi Dong, Wade T. Crow
openaire   +1 more source

On the Trail of Creativity: Dimensionality of Divergent Thinking and Its Relation With Cognitive Abilities, Personality, and Insight

European Journal of Personality, EarlyView., 2020
Abstract Divergent thinking (DT) is an important constituent of creativity that captures aspects of fluency and originality. The literature lacks multivariate studies that report relationships between DT and its aspects with relevant covariates, such as cognitive abilities, personality traits (e.g. openness), and insight. In two multivariate studies (N 
S. Weiss, D. Steger, Y. Kaur, A. Hildebrandt, U. Schroeders, O. Wilhelm, Christian Kandler   +6 more
wiley   +1 more source

First attempt of global-scale assimilation of subdaily scale soil moisture estimates from CYGNSS and SMAP into a land surface model

Environmental Research Letters, 2021
Soil moisture performs a key function in the hydrologic process and understanding the global-scale water cycle. However, estimations of soil moisture taken from current sun-synchronous orbit satellites are limited in that they are neither spatially nor ...
Hyunglok Kim, Venkataraman Lakshmi, Yonghwan Kwon, Sujay V Kumar   +3 more
doaj   +1 more source

Assessment of Level-3 Gridded Global Precipitation Mission (GPM) Products Over Oceans

Remote Sensing, 2019
The performance of Level-3 gridded Global Precipitation Mission (GPM)-based precipitation products (IMERG, Integrated Multi-satellite Retrievals for GPM) is assessed against two references over oceans: the OceanRAIN dataset, derived from oceanic ...
Sana Khan, Viviana Maggioni
doaj   +1 more source

Evaluation of Sea Surface Wind Products from Scatterometer Onboard the Chinese HY-2D Satellite

Remote Sensing, 2023
The Chinese new marine dynamic environment satellite HY-2D was launched on 19 May 2021, carrying a Ku-band scatterometer (named HSCAT-D). In this study, wind products observed by the HSCAT-D were validated by comparing with wind data from the U.S ...
Sheng Yang, Lu Zhang, Mingsen Lin, Juhong Zou, Bo Mu, Hailong Peng   +5 more
doaj   +1 more source