Zobrazeno 1 - 10
of 12
pro vyhledávání: '"J. L. Steward"'
Autor:
Nancy Collins, J. L. Steward, Benjamin K. Johnson, Mick Coady, Jeffrey L. Anderson, Mohamad El Gharamti, Timothy J. Hoar, Kevin Raeder
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-24 (2021)
Scientific Reports
Scientific Reports
An ensemble Kalman filter reanalysis has been archived in the Research Data Archive at the National Center for Atmospheric Research. It used a CAM6 configuration of the Community Earth System Model (CESM), several million observations per day, and th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::65b4c2a689bde7e13a2fc8116afc9a80
https://doi.org/10.1038/s41598-021-92927-0
https://doi.org/10.1038/s41598-021-92927-0
Publikováno v:
IEEE Transactions on Geoscience and Remote Sensing. 57:1001-1014
The deconvolution of potentially cloud-affected passive microwave brightness temperatures is an important step for utilization in direct data assimilation in cloud-resolving numerical weather prediction (NWP) models for the purpose of improving model
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c4e6699d5dcbfff52acefa102efadc62
https://doi.org/10.1109/tgrs.2018.2864097
https://doi.org/10.1109/tgrs.2018.2864097
Publikováno v:
Journal of Atmospheric and Oceanic Technology. 34:1867-1884
The ensemble square root Kalman filter (ESRF) is a variant of the ensemble Kalman filter used with deterministic observations that includes a matrix square root to account for the uncertainty of the unperturbed ensemble observations. Because of the d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d1f2b010cbb03fb26b24fb7e72eb8638
https://doi.org/10.1175/jtech-d-16-0140.1
https://doi.org/10.1175/jtech-d-16-0140.1
Publikováno v:
Journal of Geophysical Research: Atmospheres. 122:1650-1664
Attempts to interpret the measurements of mm-wave radiometers over tropical storms must overcome the difficulty of modeling the scattering signatures of hydrometeors at these frequencies. Most approaches to date try to retrieve surface precipitation,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a8d233b0594884766a4acfbccaba2a68
https://doi.org/10.1002/2016jd025923
https://doi.org/10.1002/2016jd025923
Autor:
Ziad S. Haddad, Tomislava Vukicevic, Hsiao-Chieh Tseng, J. L. Steward, Shu-Hua Chen, Svetla M. Hristova-Veleva
Publikováno v:
Journal of Geophysical Research: Atmospheres. 120:5548-5563
Satellite microwave observations of rain, whether from radar or passive radiometers, depend in a very crucial way on the vertical distribution of the condensed water mass and on the types and sizes of the hydrometeors in the volume resolved by the in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9bfb58d8375da41ba2c76402e5a75dfe
https://doi.org/10.1002/2015jd023107
https://doi.org/10.1002/2015jd023107
Publikováno v:
SPIE Proceedings.
Few systematic attempts to interpret the measurements of mm-wave radiometers over clouds and precipitation have been made to date because the scattering signatures of hydrometeors at these frequencies are very difficult to model. The few algorithms t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7426fb8c3db4333068850a13aa325b8a
https://doi.org/10.1117/12.2228186
https://doi.org/10.1117/12.2228186
Publikováno v:
Quarterly Journal of the Royal Meteorological Society. 138:323-339
We investigate the issue of variational and sequential data assimilation with nonlinear and non-smooth observation operators using a two-dimensional limited-area shallow-water equation model and its adjoint. The performance of the four-dimensional va
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4fb532ce3e96e62fd5666a3197069473
https://doi.org/10.1002/qj.935
https://doi.org/10.1002/qj.935
Publikováno v:
International Journal for Numerical Methods in Fluids. 69:710-730
SUMMARY A proper orthogonal decomposition (POD)-based reduced-order model of the parabolized Navier–Stokes (PNS) equations is derived in this article. A space-marching finite difference method with time relaxation is used to obtain the solution of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1780588cca8ff4cf63d14eeebc3434ca
https://doi.org/10.1002/fld.2606
https://doi.org/10.1002/fld.2606
Publikováno v:
Optimization Methods and Software. 24:63-87
We compare the performance of several robust large-scale minimization algorithms for the unconstrained minimization of an ill-posed inverse problem. The parabolized Navier-Stokes equation model was used for adjoint parameter estimation. The methods c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3fb6e5e2f9a6f897b044f9aa3cb90b13
https://doi.org/10.1080/10556780802370746
https://doi.org/10.1080/10556780802370746
Publikováno v:
SPIE Proceedings.
Satellite-based scatterometers, for historical reasons, have been used mainly to derive the wind forcing term for oceanography applications in the form of the near-surface wind field. However, the scatterometer is sensitive to the surface roughness,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f6128f8fedf498890f49ecd1c5617088
https://doi.org/10.1117/12.2069343
https://doi.org/10.1117/12.2069343