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You searched for: Author "J. Asanuma" Remove constraint Author: "J. Asanuma"
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1. Estimating surface soil moisture from SMAP observations using a Neural Network technique

Author:
J. Asanuma,   et al.   ; J. Kolassa; R.H. Reichle; Q. Liu; S.H. Alemohammad; P. Gentine; K. Aida; S. Bircher; T. Caldwell; A. Colliander; M. Cosh; C. Holifield Collins; T.J. Jackson; J. Martínez-Fernández; H. McNairn; A. Pacheco; M. Thibeault; J.P. Walker;     Show all 18 Authors
Source:
Remote sensing of environment 2018 v.204 pp. 43-59
ISSN:
0034-4257
Subject:
Earth Observing System; algorithms; climatology; image analysis; microwave radiometers; neural networks; remote sensing; satellites; soil temperature; soil water; vegetation; water content
Abstract:
... A Neural Network (NN) algorithm was developed to estimate global surface soil moisture for April 2015 to March 2017 with a 2–3day repeat frequency using passive microwave observations from the Soil Moisture Active Passive (SMAP) satellite, surface soil temperatures from the NASA Goddard Earth Observing System Model version 5 (GEOS-5) land modeling system, and Moderate Resolution Imaging Spectrorad ...
DOI:
10.1016/j.rse.2017.10.045
PubMed:
29290638
PubMed Central:
PMC5744888

2. An assessment of the differences between spatial resolution and grid size for the SMAP enhanced soil moisture product over homogeneous sites

Author:
J. Asanuma,   et al.   ; A. Colliander; T.J. Jackson; S.K. Chan; P. O'Neill; R. Bindlish; M.H. Cosh; T. Caldwell; J.P. Walker; A. Berg; H. McNairn; M. Thibeault; J. Martínez-Fernández; K.H. Jensen; M.S. Seyfried; D.D. Bosch; P.J. Starks; C. Holifield Collins; J.H. Prueger; Z. Su; E. Lopez-Baeza; S.H. Yueh;     Show all 22 Authors
Source:
Remote sensing of environment 2018 v.207 pp. 65-70
ISSN:
0034-4257
Subject:
data collection; remote sensing; satellites; soil water
Abstract:
... Satellite-based passive microwave remote sensing typically involves a scanning antenna that makes measurements at irregularly spaced locations. These locations can change on a day to day basis. Soil moisture products derived from satellite-based passive microwave remote sensing are usually resampled to a fixed Earth grid that facilitates their use in applications. In many cases the grid size is fi ...
Handle:
10113/5906746
DOI:
10.1016/j.rse.2018.02.006

3. Development and assessment of the SMAP enhanced passive soil moisture product

Author:
J. Asanuma,   et al.   ; S.K. Chan; R. Bindlish; P. O'Neill; T. Jackson; E. Njoku; S. Dunbar; J. Chaubell; J. Piepmeier; S. Yueh; D. Entekhabi; A. Colliander; F. Chen; M.H. Cosh; T. Caldwell; J. Walker; A. Berg; H. McNairn; M. Thibeault; J. Martínez-Fernández; F. Uldall; M. Seyfried; D. Bosch; P. Starks; C. Holifield Collins; J. Prueger; R. van der Velde; M. Palecki; E.E. Small; M. Zreda; J. Calvet; W.T. Crow; Y. Kerr;     Show all 33 Authors
Source:
Remote sensing of environment 2018 v.204 pp. 931-941
ISSN:
0034-4257
Subject:
National Aeronautics and Space Administration; algorithms; correlation; ecosystems; freeze-thaw cycles; radar; remote sensing; satellites; soil water; temperature; uncertainty
Abstract:
... Launched in January 2015, the National Aeronautics and Space Administration (NASA) Soil Moisture Active Passive (SMAP) observatory was designed to provide frequent global mapping of high-resolution soil moisture and freeze-thaw state every two to three days using a radar and a radiometer operating at L-band frequencies. Despite a hardware mishap that rendered the radar inoperable shortly after lau ...
Handle:
10113/5819699
DOI:
10.1016/j.rse.2017.08.025

4. Validation of SMAP surface soil moisture products with core validation sites

Author:
J. Asanuma,   et al.   ; A. Colliander; T.J. Jackson; R. Bindlish; S. Chan; N. Das; S.B. Kim; M.H. Cosh; R.S. Dunbar; L. Dang; L. Pashaian; K. Aida; A. Berg; T. Rowlandson; D. Bosch; T. Caldwell; K. Caylor; D. Goodrich; H. al Jassar; E. Lopez-Baeza; J. Martínez-Fernández; A. González-Zamora; S. Livingston; H. McNairn; A. Pacheco; M. Moghaddam; C. Montzka; C. Notarnicola; G. Niedrist; T. Pellarin; J. Prueger; J. Pulliainen; K. Rautiainen; J. Ramos; M. Seyfried; P. Starks; Z. Su; Y. Zeng; R. van der Velde; M. Thibeault; W. Dorigo; M. Vreugdenhil; J.P. Walker; X. Wu; A. Monerris; P.E. O'Neill; D. Entekhabi; E.G. Njoku; S. Yueh;     Show all 49 Authors
Source:
Remote sensing of environment 2017 v.191 pp. 215-231
ISSN:
0034-4257
Subject:
algorithms; radar; remote sensing; satellites; screening; soil water
Abstract:
... The NASA Soil Moisture Active Passive (SMAP) mission has utilized a set of core validation sites as the primary methodology in assessing the soil moisture retrieval algorithm performance. Those sites provide well-calibrated in situ soil moisture measurements within SMAP product grid pixels for diverse conditions and locations. The estimation of the average soil moisture within the SMAP product gri ...
Handle:
10113/5617486
DOI:
10.1016/j.rse.2017.01.021