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},
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},
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},
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},
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"orgName": "Ocean Ecology Laboratory",
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},
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},
{
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},
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},
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},
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},
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}
},
{
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},
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}
},
{
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},
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}
},
{
"orgName": "Geospace Physics Laboratory",
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}
},
{
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},
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}
},
{
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}
},
{
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},
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}
},
{
"orgName": "Planetary Systems Lab",
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}
},
{
"orgName": "Planetary Magnetospheres Lab",
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}
},
{
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}
},
{
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"secondary": "atmosenvironments"
}
}
]
Land Data Assimilation Systems (LDAS)
The land-surface component of the hydrological cycle is fundamental to the overall functioning of the atmospheric and climate processes. The characterization of the spatial and temporal variability of water and energy cycles is critical to improve our understanding of the land-surface-atmosphere interaction and the impact of land-surface processes on climate extremes. Because the accurate knowledge of these processes and their variability is important for climate predictions, most Numerical Weather Prediction (NWP) centers have incorporated land-surface schemes in their models. However, errors in the NWP forcing accumulate in the surface and energy stores, leading to incorrect surface water and energy partitioning and related processes. A methodology under development here is to implement a Land Data Assimilation System (LDAS), which consists of land-surface models (uncoupled from an atmospheric model) forced with observations, and thus not affected by NWP forcing biases.
- Principal Investigator Dr. Sujay V Kumar
The land-surface component of the hydrological cycle is fundamental to the overall functioning of the atmospheric and climate processes. The characterization of the spatial and temporal variability of water and energy cycles is critical to improve our understanding of the land-surface-atmosphere interaction and the impact of land-surface processes on climate extremes. Because the accurate knowledge of these processes and their variability is important for climate predictions, most Numerical Weather Prediction (NWP) centers have incorporated land-surface schemes in their models. However, errors in the NWP forcing accumulate in the surface and energy stores, leading to incorrect surface water and energy partitioning and related processes. A methodology under development here is to implement a Land Data Assimilation System (LDAS), which consists of land-surface models (uncoupled from an atmospheric model) forced with observations, and thus not affected by NWP forcing biases.