搜索结果: 1-10 共查到“地球科学总论 error”相关记录10条 . 查询时间(0.078 秒)
Optimization of NWP model closure parameters using total energy norm of forecast error as a target
NWP model closure parameters forecast error
2014/12/19
We explore the use of dry total energy norm in
improving numerical weather prediction (NWP) model forecast skill. The Ensemble Prediction and Parameter Estimation System (EPPES) is utilized to estima...
Root mean square error (RMSE) or mean absolute error (MAE)? – Arguments against avoiding RMSE in the literature
Root mean square error absolute error
2014/12/18
Both the root mean square error (RMSE) and the
mean absolute error (MAE) are regularly employed in model
evaluation studies. Willmott and Matsuura (2005) have suggested that the RMSE is not a good i...
Quantifying the model structural error in carbon cycle data assimilation systems
Quantifying the model structural error carbon cycle data assimilation systems
2014/12/17
This study explores the impact of the structural error of biosphere models when assimilating net ecosystem exchange (NEE) measurements or CO2 concentration measurements to optimise uncertain model par...
Impact of a time-dependent background error covariance matrix on air quality analysis
Surface of assimilation system analysis of ozone the covariance matrix data assimilation system physical state
2014/12/10
In this article we study the influence of different characteristics of our assimilation system on surface ozone analyses over Europe. Emphasis is placed on the evaluation of the background error covar...
Construction of non-diagonal background error covariance matrices for global chemical data assimilation
Chemical data assimilation To optimize the noise Model predictions Chemical state
2014/12/9
Chemical data assimilation attempts to optimally use noisy observations along with imperfect model predictions to produce a better estimate of the chemical state of the atmosphere. It is widely accept...
Linearization of the Liouville Equation, Multiple Splits of the Chandler Frequency, Markowitz Wobbles, and Error Analysis
Liouville Equation Polar Motion Chandler Wobble Markowitz Wobble Error Analysis
2013/3/11
The rotation of the physical Earth is far more complex than the rotation of a biaxial or slightly triaxial rigid body can represent. The linearization of the Liouville equation via the Munk and MacDon...
Estimation of the systematic error of precipitation and humidity in the MM5 model
the systematic error precipitation and humidity the MM5 model
2010/1/28
To comprehensively diagnose model capabilities in simulating atmospheric flow including the relevant microphysical processes, the main prognostic fields of the MM5 model are compared with ERA40 reanal...
Fine-scale precipitation structure of a cold front and the problem of the representativeness error
Fine-scale precipitation structure cold front representativeness error
2010/1/26
The proper knowledge of spatial precipitation structure is important as much as that of microphysics processes for reliable quantitative precipitation forecasts. This study considers some aspects of h...
Spatio-temporal precipitation error propagation in runoff modelling:a case study in central Sweden
Spatio-temporal precipitation error propagation runoff modelling central Sweden
2009/12/29
The propagation of spatio-temporal errors in precipitation estimates to runoff errors in the output from the conceptual hydrological HBV model was investigated. The study region was the Gimån ca...
Error assessment of GOCE SGG data using along track interpolation
Error assessment GOCE SGG data track interpolation
2010/1/22
GOCE will be the first satellite gravity mission measuring gravity gradients in space using a dedicated instrument called a gradiometer. High resolution gravity field recovery will be possible from th...