Articles with "assimilation system" as a keyword



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The role of ocean‐atmosphere interaction in Typhoon Sinlaku (2008) using a regional coupled data assimilation system

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Published in 2017 at "Journal of Geophysical Research"

DOI: 10.1002/2017jc012750

Abstract: For improving analyses of tropical cyclone (TC) and sea surface temperature (SST) and thereby TC simulations, a regional mesoscale strongly coupled atmosphere-ocean data assimilation system was developed with the local ensemble transform Kalman filter (LETKF)… read more here.

Keywords: assimilation; sst; assimilation system; data assimilation ... See more keywords
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A Prototype Regional GSI-based EnKF-Variational Hybrid Data Assimilation System for the Rapid Refresh Forecasting System: Dual-Resolution Implementation and Testing Results

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Published in 2018 at "Advances in Atmospheric Sciences"

DOI: 10.1007/s00376-017-7108-0

Abstract: A dual-resolution (DR) version of a regional ensemble Kalman filter (EnKF)-3D ensemble variational (3DEnVar) coupled hybrid data assimilation system is implemented as a prototype for the operational Rapid Refresh forecasting system. The DR 3DEnVar system… read more here.

Keywords: resolution; system; assimilation system; data assimilation ... See more keywords
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Constraining global terrestrial gross primary productivity in a global carbon assimilation system with OCO-2 chlorophyll fluorescence data

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Published in 2021 at "Agricultural and Forest Meteorology"

DOI: 10.1016/j.agrformet.2021.108424

Abstract: Abstract The gross primary productivity (GPP) is the largest carbon flux in the terrestrial carbon cycle. Constraining GPP is critical for understanding the terrestrial carbon sources and sinks. In this study, we attempted to constrain… read more here.

Keywords: gpp; global carbon; productivity; assimilation system ... See more keywords
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A nonlinear least squares four-dimensional variational data assimilation system for PM2.5 forecasts (NASM): Description and preliminary evaluation

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Published in 2021 at "Atmospheric Pollution Research"

DOI: 10.1016/j.apr.2021.03.003

Abstract: Abstract Air quality is a vital concern globally, especially in China. To improve fine particulate matter (PM2.5) forecasts, a nonlinear least squares four-dimensional variational (NLS-4DVar) data assimilation system was established and applied into the Weather… read more here.

Keywords: nonlinear least; system; assimilation; pm2 forecasts ... See more keywords
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Assimilating Himawari-8 AHI aerosol observations with a rapid-update data assimilation system

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Published in 2019 at "Atmospheric Environment"

DOI: 10.1016/j.atmosenv.2019.116866

Abstract: Abstract Himawari-8, a next-generation geostationary meteorological satellite, is equipped with the Advanced Himawari Imager (AHI) that provides full-disk images of Earth every 10 min for 16 observation bands from visible to infrared. In this study, the… read more here.

Keywords: data assimilation; ahi aerosol; assimilation; assimilation system ... See more keywords
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Ensemble based regional ocean data assimilation system for the Indian Ocean: Implementation and evaluation

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Published in 2019 at "Ocean Modelling"

DOI: 10.1016/j.ocemod.2019.101470

Abstract: Abstract A high-resolution ocean circulation model for the Indian Ocean (IO) using Regional Ocean Modeling System (ROMS) is operational at Indian National Centre for Ocean Information Services (INCOIS) which provides ocean state forecasts for the… read more here.

Keywords: indian ocean; system; assimilation system; regional ocean ... See more keywords
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DASSO: a data assimilation system for the Southern Ocean that utilizes both sea-ice concentration and thickness observations

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Published in 2021 at "Journal of Glaciology"

DOI: 10.1017/jog.2021.57

Abstract: Abstract To improve Antarctic sea-ice simulations and estimations, an ensemble-based Data Assimilation System for the Southern Ocean (DASSO) was developed based on a regional sea ice–ocean coupled model, which assimilates sea-ice thickness (SIT) together with… read more here.

Keywords: assimilation system; data assimilation; sea ice; ice ... See more keywords
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The WRF-based Incremental Analysis Updates and its implementation in an hourly cycling data assimilation system

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Published in 2023 at "Weather and Forecasting"

DOI: 10.1175/waf-d-22-0127.1

Abstract: An incremental analysis update (IAU) scheme is successfully implemented into a WRF/WRFDA-based hourly cycling data assimilation system with the goal to reduce the imbalance introduced by the high-frequency intermittent data assimilation, especially when radar data… read more here.

Keywords: assimilation system; data assimilation; analysis; incremental analysis ... See more keywords
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Assessing the Performance of the South American Land Data Assimilation System Version 2 (SALDAS-2) Energy Balance across Diverse Biomes

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Published in 2023 at "Atmosphere"

DOI: 10.3390/atmos14060959

Abstract: Understanding the exchange of energy between the surface and the atmosphere is important in view of the climate scenario. However, it becomes a challenging task due to a sparse network of observations. This study aims… read more here.

Keywords: system; energy; energy balance; land data ... See more keywords
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The Environment and Climate Change Canada Carbon Assimilation System (EC-CAS v1.0): demonstration with simulated CO observations

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Published in 2021 at "Geoscientific Model Development"

DOI: 10.5194/gmd-14-2525-2021

Abstract: Abstract. In this study, we present the development of a new coupled weather and greenhouse gas (GHG) data assimilation system based on Environment and Climate Change Canada's (ECCC's) operational Ensemble Kalman Filter (EnKF). The estimated… read more here.

Keywords: system; climate change; environment climate; change canada ... See more keywords