Assimilation increased median soil moisture (+2% to +6 %) which in turn increased total streamflow (+0.43 to +1.70 m 3 /s daily). Critically, streamflow alone was …
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We studied the assimilation of high-resolution precipitable water vapor (PWV) data derived from a hyper-dense global navigation satellite system network around Uji city, Kyoto, Japan, which had a mean inter-station distance of about 1.7 km. We focused on a heavy rainfall event that occurred on August 13–14, 2012, around Uji city. We …
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5 assimilation improved rainfall forecast significantly in terms of timing and intensity, when compared to a GPS-ZTD and GPS-IWV assimilation only (Kawabata et al., 2013). However, the issue related to the development of the observation operator for STD is high computational cost of its parts: Forward Operator, Tangent Linear and Adjoint.
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Abstract Numerical simulations of snow water equivalent (SWE) in mountain systems can be biased, and few SWE observations have existed over large domains. New approaches for measuring SWE, like NASA's ultra-high-resolution Airborne Snow Observatory (ASO), offer an opportunity to improve model estimates by providing a high …
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This database, called the Paleo Hydrodynamics Data Assimilation product (PHYDA), will provide a critical new platform for investigating the causes of past climate variability and extremes, while ...
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Artificial insemination is a fertility treatment method used to deliver sperm directly to the cervix or uterus in the hopes of getting pregnant. Sometimes, these sperm are washed or "prepared ...
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Abstract With the recent advance in Global Positioning System (GPS) atmospheric sensing technology, slant wet delay along each ray path can be measured with a few millimeters accuracy. In this study, the impact of slant wet delay is assessed on the short-range prediction of a squall line. Since the current GPS observation network in the …
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Summer 13/07 – 23/07/18 15 (36.8) wet air masses (south and west); high lability and thunderstorms. ... especially for high assimilation. frequencies and when water vapor is assimilated.
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Emily St. James was a senior correspondent for Vox, covering American identities. Before she joined Vox in 2014, she was the first TV editor of the A.V. Club. Part of the Gender Issue of The ...
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Combining such passive sensors with a active sensor (e.g., Sentinel-1) and/or assimilating them into physical models can provide estimates with a 1–3-km 27, 28 and …
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A record-breaking extreme rainstorm occurred in Henan Province of China on 20 July 2021. To investigate the impacts of the Geostationary Interferometric Infrared Sounder (GIIRS) data assimilation on model analysis and forecasts of this rainfall event, the high temporal resolution GIIRS water vapor (WV) channel data were assimilated in …
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The assimilation of RS-derived WSE is typically convenient as it deals with a diagnostic variable of the model, yet it can suffer from the lack of precision of high-resolution topographic data as ...
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High-quality observations of water-vapour spatial and temporal distribution enable precise weather forecasts to be made. Global Navigation Satellite System (GNSS) troposphere tomography is a technique that enables derivation of a three-dimensional (3D) distribution of the wet refractivity with low cost in all weather conditions, based on GNSS ...
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Research interests: 1. Regional climate modeling (Land surface model, land data assimilation, and climate model) 2. Tibetan Plateau climate change 3. Solar radiation estimation and application
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Proper site selection and appropriate sizes of wetlands to be utilized for stormwater assimilation can minimize impacts to high quality wetlands and ensure adequate treatment of stormwater. The final report emphasizes techniques that can promote the benefits of using natural wetlands for assimilation of stormwater while minimizing detriment to ...
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Observation and simulation of the terrestrial water cycle, using remote sensing, land surface models, and hydrological models. Hui Lu currently servers as an Associate Editor of Science of Remote ...
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We studied the assimilation of high-resolution precipitable water vapor (PWV) data derived from a hyper-dense global navigation satellite system network …
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The cryosphere is a decisive driver of the Earth system (Barry, 2011; Beniston et al., 2018).Besides altering surface albedo and so concurring with the regulation of global temperature (Flanner et al., 2011), snow and glaciers accumulate winter precipitation and release it during the warm, spring and summer seasons, when demand …
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Due to high wet bias in the CNTL simulated SM, ST was underestimated compared to the observation. ... over the Indo-Gangetic Plains (IGP) using the High-Resolution Land Data Assimilation System (HRLDAS). The HRLDAS integrated for the period January 2016–January 2018 (two-year spin-up time) using the Global Land Data …
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In high volume wet-grinded FA system, more amount of hydrates would be produced to contribute to the strength development. 3) 30% and 50% replacement ratio …
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Figure 4 shows CO 2 assimilation in pea grown at 10 or 25°C. In the first case (cultivation at 10°C) the thermal optimum is about 16°C, while it is higher than 25°C in the second (cultivation at 25°C). At low temperatures, CO 2 assimilation is higher in plants grown at 10°C. In this case the adjustment to cool conditions is a gain for the ...
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The assimilation of satellite soil moisture estimates together with the mass redistribution reduces the uncertainties in model estimates resulting mainly from …
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[6] The approach to separate the daytime net CO 2 flux into the assimilation (F A = gross assimilation + leaf respiration, μmol m −2 s −1) and respiration (F R = heterotrophic soil respiration + autotrophic root respiration + stem respiration, μmol m −2 s −1) fluxes is based on differences in the carbon isotopic signatures of assimilation (δ A …
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Decompression Melting. Figure 4.3.1 4.3. 1: Progression from rift to the mid-ocean ridge, the divergent boundary types. Note the rising material in the center. Magma is created at mid-ocean ridges via decompression melting. Strong convection currents cause the solid asthenosphere to slowly flow beneath the lithosphere.
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Download scientific diagram | Maximum net CO 2 assimilation (A) and stomatal conductance (g) in the wet (open bars) and dry seasons (hatched bars), for seven dry forest species. Values are means ...
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FSS random is found as the fraction of observed wet pixels divided by the number of pixels, for example, if there are 10 wet pixels out of 100 pixels FSS random = 0.1. 6 Results from verification. The impact of the RED assimilation into the HIRLAM NWP model has been evaluated by the use of FSS. Figure 4 shows an example of FSS from …
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Miscanthus is a genus of about 20 species found in India and eastwards to Japan. A number of the species are found at high altitude ( Ohwi, 1984 ). Miscanthus transmorrisonensis dominates subalpine grasslands above 2400 m in Taiwan ( Kao, 1997; Kao et al., 1998). Miscanthus sinensis is found on mountains of Kyushu and Honshu, where it can form ...
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This study explores the use of a support vector machine (SVM) as the observation operator within a passive microwave brightness temperature data assimilation framework (herein SVM-DA) to enhance the characterization of snow water equivalent (SWE) over High Mountain Asia (HMA). A series of synthetic twin …
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The model accurately predicted the change trend of soil moisture if the initial values were reasonable. UWEnKF performed well in terms of improving soil moisture estimations despite the uncertainty of many factors in data assimilation system, and performed better with high assimilation frequency (i.e., small assimilation interval).
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In this study, one of the most popular data assimilation techniques, the Ensemble Kalman Filter (EnKF) is used to assimilate surface soil moisture observations …
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Soil moisture initialization for climate prediction: Assimilation of scanning multifrequency microwave radiometer soil moisture data into a land surface model. ... SMMR soil moisture estimates were found to be biased, less than 5% v/v dry in dry climate areas but over 10% v/v (as high as 20% v/v) wet in wet climate areas. Nonetheless, the ...
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The essence of precipitation assimilation in the Eta Data Assimilation System (EDAS) is to use observed precipitation to adjust the model's latent heating, moisture and cloud water fields during the 12-hour pre-forecast assimilation period.
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The assimilation of observations in limited area models (LAMs) allows to find the best possible estimate of a region's meteorological state. Water vapor is a crucial constituent in terms of cloud and precipitation formation. Its highly variable nature in space and time is often insufficiently represented in models. This study investigates the …
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S3M 5.1: a distributed cryospheric model with dry and wet snow, data assimilation, glacier mass balance, and debris-driven melt April 2021 DOI: 10.5194/gmd-2021-92
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In bottom-up control, energy flow through the ecosystem is determined primarily by the. supply of resources limiting NPP. If a robin with an assimilation efficiency of 30% and a production efficiency of 20% consumes 200 grams of worms, the expected increase in biomass of the will be _______ grams. 12.
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