Zobrazeno 1 - 10 of 22 pro vyhledávání: '"S. Mark Leidner"'
1
Impact of CYGNSS-Derived Winds on Tropical Cyclone Forecasts in a Global and Regional Model
Autor: S. Mark Leidner, Michael J. Mueller, Bachir Annane, Lidia Cucurull
Publikováno v: Monthly Weather Review. 149:3433-3447
An observing system experiment was conducted to assess the impact of wind products derived from the Cyclone Global Navigation Satellite System (CYGNSS) on tropical cyclone track, maximum 10-m wind speed Vmax, and minimum sea level pressure forecasts.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c29ae584a318ed0be9cb52b35818d637
https://doi.org/10.1175/mwr-d-21-0094.1
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3
A Forward Model for Data Assimilation of GNSS Ocean Reflectometry Delay-Doppler Maps
Autor: James L. Garrison, Ross N. Hoffman, S. Mark Leidner, Ad Stoffelen, Feixiong Huang, G. Grieco, Bachir Annane
Publikováno v: IEEE Transactions on Geoscience and Remote Sensing. 59:2643-2656
Delay-Doppler maps (DDMs) are generally the lowest level of calibrated observables produced from global navigation satellite system reflectometry (GNSS-R). A forward model is presented to relate the DDM, in units of absolute power at the receiver, to
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::27b864f66a47be41ff03e7d63d9d5722
https://doi.org/10.1109/tgrs.2020.3002801
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5
Assimilation of GNSS-R Delay-Doppler Maps into Weather Models
Autor: James L. Garrison, G. Grieco, S. Mark Leidner, Feixiong Huang, Ad Stoffelen, Bachir Annane, Ross N. Hoffman
Publikováno v: IGARSS
Global Navigation Satellite System Reflectometry (GNSS-R) observations from the Cyclone Global Navigation Satellite System (CYGNSS) mission are expected to improve numerical weather prediction (NWP) models. Level 1 GNSS-R observables, delay-Doppler m
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7744157e0611d76a87de88283efd95c1
https://doi.org/10.1109/igarss39084.2020.9324128
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6
Variational Analysis of Simulated Ocean Surface Winds from the Cyclone Global Navigation Satellite System (CYGNSS) and Evaluation Using a Regional OSSE
Autor: Bachir Annane, Ross N. Hoffman, Brian D. McNoldy, Robert Atlas, S. Mark Leidner
Publikováno v: Journal of Atmospheric and Oceanic Technology. 35:1571-1584
A positive impact of adding directional information to observations from the Cyclone Global Navigation Satellite System (CYNGSS) constellation of microsatellites is observed in simulation using a high-resolution nature run of an Atlantic hurricane fo
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2cead2e1fdcabef5169f6171775ef484
https://doi.org/10.1175/jtech-d-17-0136.1
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7
A Severe Weather Quick Observing System Simulation Experiment (QuickOSSE) of Global Navigation Satellite System (GNSS) Radio Occultation (RO) Superconstellations
Autor: S. Mark Leidner, J. Henderson, Thomas Nehrkorn, Tom Yunck, Ross N. Hoffman, M. E. Mountain
Publikováno v: Monthly Weather Review. 145:637-651
Global Navigation Satellite System (GNSS) radio occultations (RO) over the last 10 years have proved to be a valuable and essentially unbiased data source for operational global numerical weather prediction. However, the existing sampling coverage is
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8484c3cf9e0b4ea9f0e382a2e1684202
https://doi.org/10.1175/mwr-d-16-0212.1
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8
Assimilation of Tropical Cyclone Observations: Improving the Assimilation of TCVitals, Scatterometer Winds, and Dropwindsonde Observations
Autor: Gyorgyi Gyarmati, Istvan Szunyogh, Christina Holt, S. Mark Leidner, Ross N. Hoffman
Publikováno v: Monthly Weather Review. 143:3956-3980
The standard statistical model of data assimilation assumes that the background and observation errors are normally distributed, and the first- and second-order statistical moments of the two distributions are known or can be accurately estimated. Be
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::480619004f573b97f84315fb25d03c2f
https://doi.org/10.1175/mwr-d-14-00158.1
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9
Error Estimates for Ocean Surface Winds: Applying Desroziers Diagnostics to the Cross-Calibrated, Multiplatform Analysis of Wind Speed
Autor: Robert Atlas, Deborah K. Smith, S. Mark Leidner, Ross N. Hoffman, Joseph V. Ardizzone
Publikováno v: Journal of Atmospheric and Oceanic Technology. 30:2596-2603
The Desroziers diagnostics (DD) are applied to the cross-calibrated, multiplatform (CCMP) ocean surface wind datasets to estimate wind speed errors of the ECMWF background, the microwave satellite observations, and the resulting CCMP analysis. The DD
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::979d1b9f14c1d6cd6a69b0305d189cea
https://doi.org/10.1175/jtech-d-13-00018.1
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10
A Cross-calibrated, Multiplatform Ocean Surface Wind Velocity Product for Meteorological and Oceanographic Applications
Autor: Deborah K. Smith, S. Mark Leidner, Joseph V. Ardizzone, Robert Atlas, Ross N. Hoffman, Daniel Gombos, J. C. Jusem
Publikováno v: Bulletin of the American Meteorological Society. 92:157-174
The ocean surface wind mediates exchanges between the ocean and the atmosphere. These air–sea exchange processes are critical for understanding and predicting atmosphere, ocean, and wave phenomena on many time and space scales. A cross-calibrated m
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::252494648f9d0e259e403fca4cc63415
https://doi.org/10.1175/2010bams2946.1
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