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Evolution of ensemble data assimilation for uncertainty quantification using the particle filter-Markov chain Monte Carlo method


, : Evolution of ensemble data assimilation for uncertainty quantification using the particle filter-Markov chain Monte Carlo method. Water Resources Research 48(12): n/a-n/a

Particle filters (PFs) have become popular for assimilation of a wide range of hydrologic variables in recent years. With this increased use, it has become necessary to increase the applicability of this technique for use in complex hydrologic/land surface models and to make these methods more viable for operational probabilistic prediction. To make the PF a more suitable option in these scenarios, it is necessary to improve the reliability of these techniques. Improved reliability in the PF is achieved in this work through an improved parameter search, with the use of variable variance multipliers and Markov Chain Monte Carlo methods. Application of these methods to the PF allows for greater search of the posterior distribution, leading to more complete characterization of the posterior distribution and reducing risk of sample impoverishment. This leads to a PF that is more efficient and provides more reliable predictions. This study introduces the theory behind the proposed algorithm, with application on a hydrologic model. from both real and synthetic studies suggest that the proposed filter significantly increases the effectiveness of the PF, with marginal increase in the computational demand for hydrologic prediction.

US$19.90

DOI: 10.1029/2012wr012144


Other references

Watson, J.; Kamm, R.D.; Burwen, D.R.; Brown, R.; Ingenito, E.; Slutsky, A.S., 1987: Gas exchange during constant flow ventilation with different gases. To investigate the mechanisms of CO2 transport during constant flow ventilation, we measured arterial blood gases using air, 80% He-20% O2 (He) or 80% SF6-20% O2 (SF6) as the insufflating gas. At any given flow rate (0.2 to 1.0 L/s), PACO2 was gre...

Meyer, H.; Seele, W.; Steinbeck, H., 1962: Influence of high doses of potassium and phosphorus on potassium, sodium and water metabolism in cattle.. It two young bulls, high doses of K were partly excreted by the kidneys, and partly stored to be eliminated after administration of K had ceased. During dosing with potassium bicarbonate, renal excretion of Na increased, whereas faecal content of...

Walshe, C.; Chew-Graham, C.; Todd, C.; Caress, A., 2008: What influences referrals within community palliative care services? A qualitative case study. Evidence suggests that the utilisation of community palliative care services varies considerably according to different patient characteristics. Most literature describes this variability, but does not address why such differences exist. Exploring...

Pascal, P.; Tiers, S.; Dosso, M., 2004: Evolution des marges agricoles de la foret protegee de Kakamega (Quest kenyan) : une dynamique sous surveillance. Western Kenya: poverty. In Western Kenya, the Kakamega forest covers 240 sq.km. It is a living remnant of the once great Guineo-Congolian rainforest, which stretched across Central Africa. The Kakamega forest is now known around the world for its...

Ajay, V.S.; Jindal, D.; Roy, A.; Venugopal, V.; Sharma, R.; Pawar, A.; Kinra, S.; Tandon, N.; Prabhakaran, D., 2017: Development of a Smartphone-Enabled Hypertension and Diabetes Mellitus Management Package to Facilitate Evidence-Based Care Delivery in Primary Healthcare Facilities in India: The mPower Heart Project. The high burden of undetected and undertreated hypertension and diabetes mellitus is a major health challenge worldwide. The mPower Heart Project aimed to develop and test a feasible and scalable intervention for hypertension and diabetes mellitus...

Courtney, A.D.; Johnston, R.T.; Hill, A.L., 1993: The nature and expression of weed/crop/herbicide interactions in cereals. The development of a strategy for the use of appropriate concn of herbicides, which depends on the adequate understanding of crop/weed/herbicide responses, is discussed. It was suggested that weed control involves a number of direct and indirect e...

Anonymous, 1950: III. Congress of phthisiology in Yugoslavia. Zdravstveni Vestnik 19(11-12): 251-253

Tasel, S.F.; Mumcuoglu, E.U.; Hassanpour, R.Z.; Perkins, G., 2016: A validated active contour method driven by parabolic arc model for detection and segmentation of mitochondria. Recent studies reveal that mitochondria take substantial responsibility in cellular functions that are closely related to aging diseases caused by degeneration of neurons. These studies emphasize that the membrane and crista morphology of a mitoch...

Villano, David., 1993: New hope for the panther. Defenders. Spring; 682: 28-35

Li, C.K.; Maffulli, N.; Lee, K.; Chan, K.M., 1998: A prospective randomized trial of suture of the patellar tendon defect after harvesting. In a rabbit model, we studied the long-term biomechanical and biochemical effects of leaving the patellar tendon unsutured, or closing the defect with absorbable sutures, after harvesting one third. Using a prospective randomized design, after har...