Results 11 to 20 of about 483 (224)

Estimates of Mode-S EHS aircraft-derived wind observation errors using triple collocation [PDF]

Atmospheric Measurement Techniques, 2016
Information on the accuracy of meteorological observation is essential to assess the applicability of the measurements. In general, accuracy information is difficult to obtain in operational situations, since the truth is unknown. One method to determine
S. de Haan
doaj   +4 more sources

Summarizing multiple aspects of triple collocation analysis in a single diagram

Frontiers in Remote Sensing
With the ongoing expansion of global observation networks, it is expected that we shall routinely analyze records of geophysical variables such as temperature from multiple collocated instruments.
Leong Wai Siu, Xubin Zeng, Armin Sorooshian, Armin Sorooshian, Brian Cairns, Richard A. Ferrare, Johnathan W. Hair, Chris A. Hostetler, David Painemal, David Painemal, Joseph S. Schlosser, Joseph S. Schlosser   +11 more
doaj   +2 more sources

Validating CYGNSS Wind Speeds with Surface-Based Observations and Triple Collocation Analysis

Remote Sensing
Existing validation of mean wind speed estimates via reflectometry from global navigation systems of satellites (GNSS-R)—has been largely limited in spatial coverage to equatorial buoys or tropical cyclone events near continental United States.
Ashley Wild, Yuriy Kuleshov, Suelynn Choy, Lucas Holden   +3 more
doaj   +2 more sources

Global soil moisture data fusion by Triple Collocation Analysis from 2011 to 2018. [PDF]

Sci Data, 2022
AbstractSurface Soil Moisture (SSM) information is needed for agricultural water resource management, hydrology and climate analysis applications. Temporal and spatial sampling by the space-borne instruments designed to retrieve SSM is, however, limited by the orbit and sensors of the satellites.
Xie Q, Jia L, Menenti M, Hu G.
europepmc   +6 more sources

Triple Collocation Based Multi-Source Precipitation Merging [PDF]

Frontiers in Water, 2020
Multi-source precipitation merging has been used for improving global precipitation estimation accuracy. However, current merging techniques heavily rely on gauge-based precipitation and/or streamflow observations, which may contain substantial uncertainties over data-poor regions.
Jianzhi Dong, Fangni Lei, Lingna Wei
openaire   +1 more source

Global-scale Evaluation of SMAP, SMOS and ASCAT Soil Moisture Products using Triple Collocation. [PDF]

Remote Sens Environ, 2018
Global-scale surface soil moisture products are currently available from multiple remote sensing platforms. Footprint-scale assessments of these products are generally restricted to limited number of densely-instrumented validation sites. However, by taking active and passive soil moisture products together with a third independent soil moisture ...
Chen F, Crow WT, Bindlish R, Colliander A, Burgin MS, Asanuma J, Aida K.   +6 more
europepmc   +4 more sources

Beyond triple collocation: Applications to soil moisture monitoring [PDF]

Journal of Geophysical Research: Atmospheres, 2014
AbstractTriple collocation (TC) is routinely used to resolve approximated linear relationships between different measurements (or representations) of a geophysical variable that are subject to errors. It has been utilized in the context of calibration, validation, bias correction, and error characterization to allow comparisons of diverse data records ...
Su, C-H, Ryu, D, Crow, WT, Western, AW
openaire   +2 more sources

Triple Collocation of Ground-, Satellite- and Land Surface Model-Based Surface Soil Moisture Products in Oklahoma—Part I: Individual Product Assessment

Remote Sensing, 2022
Improvements in soil moisture observations and modeling play a vital role in drought, water resources, flooding, and landslide management and forecasting.
Zhen Hong, Hernan A. Moreno, Zhi Li, Shuo Li, John S. Greene, Yang Hong, Laura V. Alvarez   +6 more
doaj   +1 more source

Error Analysis on ESA’s Envisat ASAR Wave Mode Significant Wave Height Retrievals Using Triple Collocation Model

Remote Sensing, 2014
Nowadays, spaceborne Synthetic Aperture Radar (SAR) has become a powerful tool for providing significant wave height (SWH). Traditionally, validation of SAR derived SWH has been carried out against buoy measurements or model outputs, which only yield an ...
He Wang, Jianhua Zhu, Jingsong Yang
doaj   +1 more source

Error Characterization of Sea Surface Salinity Products Using Triple Collocation Analysis [PDF]

IEEE Transactions on Geoscience and Remote Sensing, 2018
International Conference on Marine Data and Information Systems (IMDIS 2018), 5-7 November 2018, Barcelona.-- 2 pages, 3 tables The monitoring of the global distribution of sea surface salinity (SSS) is vital to understand the ocean’s role in the Earth’s climate.
Nina Hoareau, Marcos Portabella, Wenming Lin, Joaquim Ballabrera-Poy, Antonio Turiel   +4 more
openaire   +3 more sources