Zobrazeno 1 - 10
of 115
pro vyhledávání: '"Alfred T. C. Chang"'
Autor:
N.M. Mognard, Richard Kelly, James L. Foster, Alfred T. C. Chang, Edward G. Josberger, Richard L. Armstrong
Publikováno v:
Journal of Hydrometeorology. 6:20-33
Accurate estimation of snow mass is important for the characterization of the hydrological cycle at different space and time scales. For effective water resources management, accurate estimation of snow storage is needed. Conventionally, snow depth i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::82c942642798ddaa6045e681ca7a423e
https://doi.org/10.1175/jhm-405.1
https://doi.org/10.1175/jhm-405.1
Autor:
Jiarui Dong, R.E.J. Kelly, Jeffrey P. Walker, Hugh Powell, James L. Foster, Chaojiao Sun, Alfred T. C. Chang
Publikováno v:
Remote Sensing of Environment. 94:187-203
Passive microwave sensors (PM) onboard satellites have the capability to provide global snow observations which are not affected by cloudiness and night condition (except when precipitating events are occurring). Furthermore, they provide information
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2cb1ced4d9e6853820fbdf6ad9e480d1
https://doi.org/10.1016/j.rse.2004.09.012
https://doi.org/10.1016/j.rse.2004.09.012
Publikováno v:
IEEE Transactions on Geoscience and Remote Sensing. 41:1844-1852
The frequency dependence of scattering by geophysical media at microwave frequencies is an important topic because multifrequency measurements are used in remote sensing applications. In this paper, we study rigorously the frequency dependence of sca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac0020cd22c5cfec3830db9e26bd9d8f
https://doi.org/10.1109/tgrs.2003.811812
https://doi.org/10.1109/tgrs.2003.811812
Publikováno v:
Microwave and Optical Technology Letters. 38:313-317
We present large-scale Monte Carlo simulation results of the phase functions in multiple scattering by dense media of small 2D particles. Solution of the Foldy–Lax equations with large number of unknowns is done efficiently using the sparse-matrix
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::89f368f56c5e195ea7aa6afc934333f6
https://doi.org/10.1002/mop.11047
https://doi.org/10.1002/mop.11047
Publikováno v:
IEEE Transactions on Geoscience and Remote Sensing. 41:230-242
A methodologically simple approach to estimate snow depth from spaceborne microwave instruments is described. The scattering signal observed in multifrequency passive microwave data is used to detect snow cover. Wet snow, frozen ground, precipitation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1181b2c0c41ce706b2b26c85d51894b3
https://doi.org/10.1109/tgrs.2003.809118
https://doi.org/10.1109/tgrs.2003.809118
Publikováno v:
IEEE Transactions on Geoscience and Remote Sensing. 40:153-161
The frequency dependence of extinction and scattering by geophysical medium at microwave frequencies is an important scattering topic because multifrequency measurements are used in remote sensing applications. Classical independent scattering theory
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::81f6814152773f8f0078ef75d6bad418
https://doi.org/10.1109/36.981357
https://doi.org/10.1109/36.981357
Publikováno v:
Annals of Glaciology. 34:24-30
There are several hemispheric-scale satellite-derived snow-cover maps available, but none has been fully validated. For the period 23 October–25 December 2000, we compare snow maps of North America derived from the Moderate Resolution Imaging Spect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::782c8f262b25f1e0f6708d907a53eda7
https://doi.org/10.3189/172756402781817770
https://doi.org/10.3189/172756402781817770
Autor:
Alan Basist, Claude Williams, Thomas F. Ross, Matthew J. Menne, Norman Grody, Ralph Ferraro, Samuel Shen, Alfred T. C. Chang
Publikováno v:
Journal of Hydrometeorology. 2:297-308
The frequencies flown on the Special Sensor Microwave Imager (SSM/I) are sensitive to liquid water near the earth’s surface. These frequencies are primarily atmospheric window channels, which receive the majority of their radiation from the surface
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c37adfc16f1666af1a1cabfb283109e0
https://doi.org/10.1175/1525-7541(2001)002<0297:utssmi>2.0.co
https://doi.org/10.1175/1525-7541(2001)002<0297:utssmi>2.0.co
Autor:
Long S. Chiu, Alfred T. C. Chang
Publikováno v:
Geophysical Research Letters. 28:1223-1226
We compute the non-systematic errors of monthly oceanic rainfall over 5° latitude by 5° longitude boxes derived from data taken by the Special Sensor Microwave Imager (SSM/I) on board the Defense Meteorological Satellite Program (DMSP) satellites a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3fe39d45806506d99e1bdc659ce3748f
https://doi.org/10.1029/2000gl012473
https://doi.org/10.1029/2000gl012473
Autor:
Long S. Chiu, Alfred T. C. Chang
Publikováno v:
Journal of Climate. 13:4125-4136
The climatology of oceanic rain column height derived from 12 years (July 1987–June 1999) of Special Sensor Microwave Imager (SSM/I) data is presented. The estimation procedure is based on a technique developed by Wilheit et al. In the annual mean,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5f5913efed2874c68435f52db5baba58
https://doi.org/10.1175/1520-0442(2000)013<4125:orchdf>2.0.co
https://doi.org/10.1175/1520-0442(2000)013<4125:orchdf>2.0.co