X. Tian

发表

A Big Data‐Driven Nonlinear Least Squares Four‐Dimensional Variational Data Assimilation Method: Theoretical Formulation and Conceptual Evaluation

Hongqin Zhang, X. Tian, 2019, Earth and Space Science.

A POD‐based ensemble four‐dimensional variational assimilation method

Xiangjun Tian, Zhenghui Xie, Qin Sun, 2011 .

A non-linear least squares enhanced POD-4DVar algorithm for data assimilation

Xiaobing Feng, X. Tian, Xiaobing H. Feng, 2015 .

A soil moisture assimilation scheme based on the ensemble Kalman filter using microwave brightness temperature

C. Shi, Zhenghui Xie, X. Tian, 2009 .

A dual‐pass variational data assimilation framework for estimating soil moisture profiles from AMSR‐E microwave brightness temperature

A. Dai, Kun Yang, C. Shi, 2009 .

Assimilation of microwave brightness temperature in a land data assimilation system with multi-observation operators

Xiangjun Tian, Zhenghui Xie, Chunxiang Shi, 2012 .

The Chinese carbon cycle data-assimilation system (Tan-Tracker)

Zhenghui Xie, Z. Cai, Yi Liu, 2014 .

A microwave land data assimilation system: Scheme and preliminary evaluation over China

Xiangjun Tian, Zhenghui Xie, Chunxiang Shi, 2010 .

An ensemble conditional nonlinear optimal perturbation approach: Formulation and applications to parameter calibration

A. Dai, Zhenghui Xie, X. Tian, 2010 .

A land surface soil moisture data assimilation system based on the dual‐UKF method and the Community Land Model

Xiangjun Tian, Zhenghui Xie, A. Dai, 2008 .

A land surface soil moisture data assimilation framework in consideration of the model subgrid-scale heterogeneity and soil water thawing and freezing

Xiangjun Tian, Zhenghui Xie, Zhenghui Xie, 2008 .

Impacts of Multigrid NLS-4DVar-based Doppler Radar Observation Assimilation on Numerical Simulations of Landfalling Typhoon Haikui (2012)

Hongqin Zhang, X. Tian, Lu Zhang, 2020, Advances in Atmospheric Sciences.

A Multigrid Nonlinear Least Squares Four‐Dimensional Variational Data Assimilation Scheme With the Advanced Research Weather Research and Forecasting Model

Hongqin Zhang, X. Tian, 2018 .

Improved ET assimilation through incorporating SMAP soil moisture observations using a coupled process model: A study of U.S. arid and semiarid regions

Li Zhang, Sinan Li, Min Yan, 2020 .

Handling non-linearity in radar data assimilation using the non-linear least squares enhanced POD-4DVar

Lifeng Zhang, Bin Zhang, Jian‐Hua Sun, 2017, Science China Earth Sciences.

Nonlinear Least Squares En4DVar to 4DEnVar Methods for Data Assimilation: Formulation, Analysis and Preliminary Evaluation

Yuanfu Xie, Hongqin Zhang, Xiaobing Feng, 2018 .

An enhanced ensemble‐based method for computing CNOPs using an efficient localization implementation scheme and a two‐step optimization strategy: formulation and preliminary tests

Hongqin Zhang, Xiaobing Feng, Bin Zhang, 2016 .

Accounting for CO2 variability over East Asia with a regional joint inversion system and its preliminary evaluation

Meigen Zhang, Xiaoling Zhang, Zhen Peng, 2017, Journal of Meteorological Research.

A soil water and heat transfer model including changes in soil frost and thaw fronts

Xiaobing Feng, Zhenghui Xie, X. Tian, 2014, Science China Earth Sciences.

A Mini‐Batch Stochastic Optimization‐Based Adaptive Localization Scheme and Its Implementation in NLS‐i4DVar

Hongqin Zhang, X. Tian, Xiaobing H. Feng, 2022, Earth and Space Science.

Constraining China's land carbon sink from emerging satellite CO2 observations: Progress and challenges

Matthew S. Johnson, F. Deng, Xingying Zhang, 2022, Global change biology.

Integral correction of initial and model errors in system of multigrid NLS‐4DVar data assimilation for numerical weather prediction (SNAP)

Hongqin Zhang, X. Tian, 2022, Quarterly Journal of the Royal Meteorological Society.

Past, present and future of the carbon cycle

N. Zeng, Zhenghui Xie, Huijun Wang, 2013, National Science Review.

An Adjoint‐Free Alternating Direction Method for Four‐Dimensional Variational Data Assimilation With Multiple Parameter Tikhonov Regularization

Hongqin Zhang, X. Tian, Rui Han, 2020, Earth and Space Science.

Implementation of a Modified Adaptive Covariance Inflation Scheme for the Big Data‐Driven NLS‐4DVar Algorithm

Hongqin Zhang, X. Tian, 2019, Earth and Space Science.

PODEn4DVar-based radar data assimilation scheme: formulation and preliminary results from real-data experiments with advanced research WRF (ARW)

Jianhua Sun, Xiangjun Tian, Bin Zhang, 2015 .

A New Reduced Stabilized Mixed Finite-Element Method Based on Proper Orthogonal Decomposition for the Transient Navier-Stokes Equations

D. Xie, Jian Li, Z. Di, 2011 .

Simulating carbon and water fluxes using a coupled process-based terrestrial biosphere model and joint assimilation of leaf area index and surface soil moisture

Li Zhang, Sinan Li, Jingfeng Xiao, 2021, Hydrology and Earth System Sciences.

Global Patterns in Net Primary Production Allocation Regulated by Environmental Conditions and Forest Stand Age: A Model‐Data Comparison

P. Ciais, F. Joos, S. Lienert, 2019, Journal of Geophysical Research: Biogeosciences.

Sensitivity of the simulated CO2 concentration to inter-annual variations of its sources and sinks over East Asia

Z. Cai, H. Liao, X. Tian, 2019 .

Impact of Prior Terrestrial Carbon Fluxes on Simulations of Atmospheric CO2 Concentrations

H. Liao, X. Tian, Binghao Jia, 2021, Journal of Geophysical Research: Atmospheres.

Regional CO2 fluxes from 2010 to 2015 inferred from GOSAT XCO2 retrievals using a new version of the Global Carbon Assimilation System

W. Ju, Jing M. Chen, Jane Liu, 2021 .

Fluxes during 2010-2015 Inferred from GOSAT XCO 2 2 retrievals using a new version of Global Carbon Assimilation System

Feng, Haikun, W. Ju, 2020 .

A dual-pass carbon cycle data assimilation system to estimate surface CO2 fluxes and 3D atmospheric CO2 concentrations from spaceborne measurements of atmospheric CO2

X. Tian, Rui Han, 2019 .

A dual-pass global carbon cycle data assimilation system Tan-Tracker (v1) to estimate surface CO2 fluxes and 3D atmospheric CO2 concentrations from spaceborne measurements of atmospheric CO2

X. Tian, Rui Han, 2019 .

Assimilation of Remotely-Sensed Leaf Area Index into a Dynamic Vegetation Model for Gross Primary Productivity Estimation

Yi Zheng, Li Zhang, Rui Ma, 2017, Remote. Sens..

Handling errors in four-dimensional variational data assimilation by balancing the degrees of freedom and the model constraints: A new approach

Hongqin Zhang, X. Tian, Zhe Jin, 2022, 2212.09973.

i4DVar: An Integral Correcting Four‐Dimensional Variational Data Assimilation Method

Xiangjun Tian, Xiaobing Feng, Hongqin Zhang, 2021 .

A New Approach for 4DVar Data Assimilation

A. Dai, Hongqin Zhang, X. Tian, 2018, 1805.09320.

Improvement of PM2.5 forecast over China by the joint adjustment of initial conditions and emissions with the NLS-4DVar method

Hongqin Zhang, Meigen Zhang, Xiao Han, 2021, Atmospheric Environment.

Improved methods for estimating equilibrium climate sensitivity from transient warming simulations

A. Dai, X. Tian, B. Rose, 2020, Climate Dynamics.

A global CO2 flux dataset (2015–2019) inferred from OCO-2 retrievals using the Tan-Tracker inversion system

Xin Li, Cuihong Chen, Huiqin Mao, 2021 .

A new approach for Bayesian model averaging

XiangJun Tian, ZhengHui Xie, AiHui Wang, 2012, Science China Earth Sciences.

An Adjoint-Free CNOP–4DVar Hybrid Method for Identifying Sensitive Areas Targeted Observations: Method Formulation and Preliminary Evaluation

Xiaobing Feng, Xiangjun Tian, X. Tian, 2019, Advances in Atmospheric Sciences.

Effects of precipitation‐bias corrections on surface hydrology over northern latitudes

A. Dai, Daqing Yang, Zhenghui Xie, 2007 .

GRACE terrestrial water storage data assimilation based on the ensemble four-dimensional variational method PODEn4DVar: Method and validation

Zhenghui Xie, X. Tian, Qin Sun, 2015, Science China Earth Sciences.

Constraint of satellite CO_2 retrieval on the global carbon cycle from a Chinese atmospheric inversion system

Hongqin Zhang, Yilong Wang, Jinzhi Ding, 2023, Science China Earth Sciences.

A nonlinear least squares four-dimensional variational data assimilation system for PM2.5 forecasts (NASM): Description and preliminary evaluation

Xiangjun Tian, Xiao Han, Meigen Zhang, 2021 .

A subsurface runoff parameterization with water storage and recharge based on the Boussinesq-storage equation for a land surface model

Miaoling Liang, Zhenghui Xie, Shenglei Zhang, 2006 .

Real-data assimilation experiment with a joint data assimilation system: assimilating carbon dioxide mole fraction measurements from the Greenhouse gases Observing Satellite

Z. Cai, X. Tian, Yu Fu, 2016 .

Assimilating Doppler radar radial velocity and reflectivity observations in the weather research and forecasting model by a proper orthogonal-decomposition-based ensemble, three-dimensional variational assimilation method

Zhenghui Xie, Chunyan Lu, Xiaoduo Pan, 2012 .

Evaluating the Forecast Impact of Assimilating ATOVS Radiance With the Regional System of Multigrid NLS‐4DVar Data Assimilation for Numerical Weather Prediction (SNAP)

Hongqin Zhang, X. Tian, 2021, Journal of Advances in Modeling Earth Systems.

System of Multigrid Nonlinear Least-squares Four-dimensional Variational Data Assimilation for Numerical Weather Prediction (SNAP): System Formulation and Preliminary Evaluation

Wei Cheng, Hongqin Zhang, Xiangjun Tian, 2020, Advances in Atmospheric Sciences.

An ensemble-based explicit four-dimensional variational assimilation method

Xiangjun Tian, Zhenghui Xie, A. Dai, 2008 .

Spatiotemporal Variations and Uncertainty in Crop Residue Burning Emissions over North China Plain: Implication for Atmospheric CO2 Simulation

Xiangjun Tian, Hao Gao, Hong Liao, 2021, Remote. Sens..

An explicit four-dimensional variational data assimilation method based on the proper orthogonal decomposition: Theoretics and evaluation

Zhenghui Xie, X. Tian, 2009 .

Optimal design of surface CO2 observation network to constrain China's land carbon sink.

Dan Liu, Tao Wang, S. Piao, 2023, Science bulletin.

A POD-based ensemble four-dimensional variational assimilation method

Zhenghui Xie, X. Tian, Qin Sun, 2011 .

Effects of sample density on the assimilation performance of an explicit four-dimensional variational data assimilation method

Xiangjun Tian, Zhenghui Xie, Zhenghui Xie, 2009 .

An Efficient Local Correlation Matrix Decomposition Approach for the Localization Implementation of Ensemble‐Based Assimilation Methods

Xiangjun Tian, Hongqin Zhang, Hongqin Zhang, 2018 .