Over 20 years of experience in the development and assessment of data assimilation systems to improve numerical model forecast. Specialized expertise on data assimilation techniques, and assimilation and quality control of conventional and satellite observations. My more recent research has been focused on all-sky radiance assimilation, and my current research is the assimilation of space-borne observations to constrain the global PBL.
- Ph.D. Geophysical Fluid Dynamics, Florida State University
- M.S. Synoptic Dynamics, Chinese Academy of Meteorological Sciences
- B.S. Meteorology, Peking University
Refereed
Karpowicz, B. M., Y. Zhu, S. J. Munchak, and W. McCarty. 2022. "Assessment of retrieved GMI emissivity over land, snow, and sea ice in the GEOS system."
Journal of Atmospheric and Oceanic Technology,
[10.1175/jtech-d-21-0187.1]
Zhu, Y., R. Todling, and N. Arnold. 2022. "Observation Impact and Information Retention in the Lower Troposphere of the GMAO GEOS Data Assimilation System."
Monthly Weather Review,
[10.1175/MWR-D-21-0334.1]
Tong, M., Y. Zhu, L. Zhou, et al. 2020. "Multiple Hydrometeors All-sky Microwave Radiance Assimilation in FV3GFS."
Monthly Weather Review,
MWR-D-19-0231.1
(In Press)
[10.1175/mwr-d-19-0231.1]
Yang, R., J. Purser, J. Carley, et al. 2020. "Application of a Nonlinear Transformation Function to the Variational Analysis of Visibility and Ceiling Height ."
NCEP/EMC Office Note 502,
38p
[https://doi.org/10.25923/esw8-5n84]
Zhu, Y., G. Gayno, R. J. Purser, X. Su, and R. Yang. 2019. "Expansion of the All-Sky Radiance Assimilation to ATMS at NCEP."
Monthly Weather Review,
147
(7):
2603-2620
[10.1175/mwr-d-18-0228.1]
Geer, A. J., K. Lonitz, P. Weston, et al. 2017. "All-sky satellite data assimilation at operational weather forecasting centres."
Quarterly Journal of the Royal Meteorological Society,
144
(713):
1191-1217
[10.1002/qj.3202]
Zhu, Y., E. Liu, R. Mahajan, et al. 2016. "All-Sky Microwave Radiance Assimilation in NCEP’s GSI Analysis System."
Monthly Weather Review,
144
(12):
4709-4735
[10.1175/mwr-d-15-0445.1]
Zhu, Y., J. C. Derber, R. J. Purser, B. A. Ballish, and J. Whiting. 2015. "Variational Correction of Aircraft Temperature Bias in the NCEP’s GSI Analysis System."
Monthly Weather Review,
143
(9):
3774-3803
[10.1175/mwr-d-14-00235.1]
Zhu, Y., J. Derber, A. Collard, et al. 2013. "Enhanced radiance bias correction in the National Centers for Environmental Prediction's Gridpoint Statistical Interpolation data assimilation system."
Quarterly Journal of the Royal Meteorological Society,
140
(682):
1479-1492
[10.1002/qj.2233]
Tassone, C., M. Tsidulko, Y. Zhu, et al. 2011. "An Assessment of a Real-Time Analysis and Its Impact on Dispersion Modeling."
NATO Science for Peace and Security Series C: Environmental Security,
391-396
[10.1007/978-94-007-1359-8_66]
Gelaro, R., and Y. Zhu. 2009. "Examination of observation impacts derived from observing system experiments (OSEs) and adjoint models."
Tellus A,
61
(2):
179-193
[10.1111/j.1600-0870.2008.00388.x]
Zhu, Y., and R. Gelaro. 2008. "Observation Sensitivity Calculations Using the Adjoint of the Gridpoint Statistical Interpolation (GSI) Analysis System."
Mon. Wea. Rev.,
136
(1):
335-351
[10.1175/MWR3525.1]
Davies, R., A. Horvath, C. Moroney, B. Zhang, and Y. Zhu. 2007. "Cloud motion vectors from MISR using sub-pixel enhancements."
Remote Sensing of Environment,
107
(1-2):
194-199
[10.1016/j.rse.2006.09.023]
Key, J., D. Santek, C. Velden, et al. 2003. "Cloud-drift and water vapor winds in the polar regions from MODIS."
IEEE Transactions on Geoscience and Remote Sensing,
41
(2):
482-492
[10.1109/tgrs.2002.808238]
Zhu, Y., R. Todling, J. Guo, et al. 2003. "The GEOS-3 Retrospective Data Assimilation System: The 6-Hour Lag Case."
Mon. Weather Rev.,
131
(9):
2129-2150
[10.1175/1520-0493(2003)131<2129:TGRDAS>2.0.CO;2]
Li, Z., I. M. Navon, and Y. Zhu. 2000. "Performance of 4D-Var with Different Strategies for the Use of Adjoint Physics with the FSU Global Spectral Model."
Monthly Weather Review,
128
(3):
668-688
[10.1175/1520-0493(2000)128<0668:povwds>2.0.co;2]
Zhu, Y., and I. M. Navon. 1999. "Impact of Parameter Estimation on the Performance of the FSU Global Spectral Model Using Its Full-Physics Adjoint."
Monthly Weather Review,
127
(7):
1497-1517
[10.1175/1520-0493(1999)127<1497:iopeot>2.0.co;2]
Refereed
Karpowicz, B. M., Y. Zhu, S. J. Munchak, and W. McCarty. 2022. "Assessment of retrieved GMI emissivity over land, snow, and sea ice in the GEOS system."
Journal of Atmospheric and Oceanic Technology
[10.1175/jtech-d-21-0187.1]
Zhu, Y., R. Todling, and N. Arnold. 2022. "Observation Impact and Information Retention in the Lower Troposphere of the GMAO GEOS Data Assimilation System."
Monthly Weather Review
[10.1175/MWR-D-21-0334.1]
Tong, M., Y. Zhu, L. Zhou, et al. 2020. "Multiple Hydrometeors All-sky Microwave Radiance Assimilation in FV3GFS."
Monthly Weather Review
(In Press)
MWR-D-19-0231.1
[10.1175/mwr-d-19-0231.1]
Yang, R., J. Purser, J. Carley, et al. 2020. "Application of a Nonlinear Transformation Function to the Variational Analysis of Visibility and Ceiling Height ."
NCEP/EMC Office Note 502
38p
[https://doi.org/10.25923/esw8-5n84]
Zhu, Y., G. Gayno, R. J. Purser, X. Su, and R. Yang. 2019. "Expansion of the All-Sky Radiance Assimilation to ATMS at NCEP."
Monthly Weather Review
147
(7):
2603-2620
[10.1175/mwr-d-18-0228.1]
Geer, A. J., K. Lonitz, P. Weston, et al. 2017. "All-sky satellite data assimilation at operational weather forecasting centres."
Quarterly Journal of the Royal Meteorological Society
144
(713):
1191-1217
[10.1002/qj.3202]
Zhu, Y., E. Liu, R. Mahajan, et al. 2016. "All-Sky Microwave Radiance Assimilation in NCEP’s GSI Analysis System."
Monthly Weather Review
144
(12):
4709-4735
[10.1175/mwr-d-15-0445.1]
Zhu, Y., J. C. Derber, R. J. Purser, B. A. Ballish, and J. Whiting. 2015. "Variational Correction of Aircraft Temperature Bias in the NCEP’s GSI Analysis System."
Monthly Weather Review
143
(9):
3774-3803
[10.1175/mwr-d-14-00235.1]
Zhu, Y., J. Derber, A. Collard, et al. 2013. "Enhanced radiance bias correction in the National Centers for Environmental Prediction's Gridpoint Statistical Interpolation data assimilation system."
Quarterly Journal of the Royal Meteorological Society
140
(682):
1479-1492
[10.1002/qj.2233]
Tassone, C., M. Tsidulko, Y. Zhu, et al. 2011. "An Assessment of a Real-Time Analysis and Its Impact on Dispersion Modeling."
NATO Science for Peace and Security Series C: Environmental Security
391-396
[10.1007/978-94-007-1359-8_66]
Gelaro, R., and Y. Zhu. 2009. "Examination of observation impacts derived from observing system experiments (OSEs) and adjoint models."
Tellus A
61
(2):
179-193
[10.1111/j.1600-0870.2008.00388.x]
Zhu, Y., and R. Gelaro. 2008. "Observation Sensitivity Calculations Using the Adjoint of the Gridpoint Statistical Interpolation (GSI) Analysis System."
Mon. Wea. Rev.
136
(1):
335-351
[10.1175/MWR3525.1]
Davies, R., A. Horvath, C. Moroney, B. Zhang, and Y. Zhu. 2007. "Cloud motion vectors from MISR using sub-pixel enhancements."
Remote Sensing of Environment
107
(1-2):
194-199
[10.1016/j.rse.2006.09.023]
Key, J., D. Santek, C. Velden, et al. 2003. "Cloud-drift and water vapor winds in the polar regions from MODIS."
IEEE Transactions on Geoscience and Remote Sensing
41
(2):
482-492
[10.1109/tgrs.2002.808238]
Zhu, Y., R. Todling, J. Guo, et al. 2003. "The GEOS-3 Retrospective Data Assimilation System: The 6-Hour Lag Case."
Mon. Weather Rev.
131
(9):
2129-2150
[10.1175/1520-0493(2003)131<2129:TGRDAS>2.0.CO;2]
Li, Z., I. M. Navon, and Y. Zhu. 2000. "Performance of 4D-Var with Different Strategies for the Use of Adjoint Physics with the FSU Global Spectral Model."
Monthly Weather Review
128
(3):
668-688
[10.1175/1520-0493(2000)128<0668:povwds>2.0.co;2]
Zhu, Y., and I. M. Navon. 1999. "Impact of Parameter Estimation on the Performance of the FSU Global Spectral Model Using Its Full-Physics Adjoint."
Monthly Weather Review
127
(7):
1497-1517
[10.1175/1520-0493(1999)127<1497:iopeot>2.0.co;2]
