Dr Qian Zhang


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Dr Qian Zhang

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Dr Qian Zhang
Monitoring Data Analyst

Chesapeake Bay Program Office

410 Severn Avenue
Suite 109
Annapolis, MD 21403
USA

Phone: (410) 267-5794
Cell: (443) 509-2270
Email: qzhang@umces.edu

Qian Zhang Integration and Application Network Dr Qian Zhang Monitoring Data Analyst Qian Zhang Photo cell(443) 509-2270 work(410) 267-5794 Chesapeake Bay Program Office
work
410 Severn Avenue Suite 109
Annapolis MD 21403 USA

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PERSONAL DETAILS

NameQian Zhang
Emailqzhang@umces.edu

RESEARCH INTERESTS

  • Statistical analysis and synthesis of water-quality monitoring data to guide watershed management
  • Improvement of statistical methods for quantification of riverine fluxes, trends, as well as uncertainties
  • Linkage between riverine fluxes and trends to watershed changes (land use, climate, and input sources)
  • Linkage between riverine fluxes and trends to estuarine processes (oxygen, water clarity, etc)

EDUCATION

Ph.D.

Johns Hopkins University, Environmental Engineering, 2011-2016.

Advisor: Professor William P. Ball (bball@jhu.edu)

Thesis: Quantifying Nutrient and Sediment Export from the Chesapeake Bay Watershed: Retrospective Analyses and Method Improvements

M.S.E.

Johns Hopkins University, Applied Mathematics and Statistics, 2013-2014.

M.S.E.

Johns Hopkins University, Environmental Engineering, 2010-2011.

B.Eng.

Nanyang Technological University (Singapore), Environmental Engineering (1st Class Honors), 2005-2009.

APPOINTMENTS

  • Assistant Research Scientist (Monitoring Data Analyst), University of Maryland Center for Environmental Science / USEPA Chesapeake Bay Program, Annapolis, MD, 2016-present.
  • Research Assistant, Dept. of Geography and Environmental Engineering, Johns Hopkins University, Baltimore, MD, 2010-2016.
  • Teaching Assistant, Dept. of Geography and Environmental Engineering, Johns Hopkins University, Baltimore, MD, 2011-2012.

SKILLS & EXPERTISE

Programming: R, Matlab, Python

Computer: Microsoft Office, ArcGIS, AutoCAD, HEC-RAS, Adobe Illustrator

Environment: Chesapeake Bay, Hydrology, Watershed, Sediment, Nutrients, TMDL, Physical/Chemical Processes, Biological Processes, Contaminant Transport

Analytics: Statistics, Monte Carlo, Data Mining, Machine Learning, Time Series, Modeling

HONORS & AWARDS

Recipient, Johns Hopkins Graduate Representatives Organization (GRO) Travel Grant, 2016

Research Fellow, Maryland Water Resources Research Center (MWRRC), 2015

Recipient, Geological Society of America (GSA) Student Travel Grant, 2015

Research Fellow, Maryland Sea Grant Graduate (MDSG), 2013 - 2014

Graduate Student Scholar, Community Surface Dynamics Modeling System (CSDMS), 2013

Winner, Chesapeake Water Environment Association (CWEA) Student Paper Competition, 2012

Awardee, Dean’s List Award, Nanyang Technological University (NTU), Singapore, 2008 - 2009

Awardee, Dean’s List Award, Nanyang Technological University (NTU), Singapore, 2007 - 2008

Winner, Singapore National Concrete Canoe Competition (SNCCC), 2008

Undergraduate Fellow, Ministry of Education (MOE), Singapore, 2005 - 2009

JOURNAL PUBLICATIONS

Zhang, Q., C.J. Harman, and W.P. Ball. 2016. “An Improved Method for Interpretation of Riverine Concentration-Discharge Relationships Indicates Long-Term Shifts in Reservoir Sediment Trapping”,   Geophysical Research Letters, in press, doi: 10.1002/2016GL069945

Zhang, Q., R.M. Hirsch, and W.P. Ball. 2016. “Long-Term Changes in Sediment and Nutrient Delivery from Conowingo Dam to Chesapeake Bay: Effects of Reservoir Filling”, Environmental Science & Technology, 50(4): 1877-1886, doi: 10.1021/acs.est.5b04073.

Zhang, Q., W.P. Ball., and D.L. Moyer. 2016. “Decadal-scale Export of Nitrogen, Phosphorus, and Sediment from the Susquehanna River Basin, USA: Analysis and Synthesis of Temporal and Spatial Patterns”, Science of the Total Environment, 563-564: 1016-1029, doi: 10.1016/j.scitotenv.2016.03.104.

Zhang, Q., D.C. Brady, W.R. Boynton, and W.P. Ball. 2015. “Long-term Trends of Nutrients and Sediment from the Non-tidal Chesapeake Watershed: An Assessment of Progress by River and Season”, Journal of the American Water Resources Association, 51(6): 1534-1555, doi: 10.1111/1752-1688.12327.

Zhang, Q., D.C. Brady, and W.P. Ball, 2013. “Long-term Seasonal Trends of Nitrogen, Phosphorus, and Suspended Sediment Load from the Non-tidal Susquehanna River Basin to Chesapeake Bay”, Science of the Total Environment, 452-453: 208-221, doi: 10.1016/j.scitotenv.2013.02.012.

JOURNAL MANUSCRIPTS UNDER REVIEW OR PREPARATION

Zhang, Q. and W.P. Ball. “Improving Riverine Constituent Concentration and Flux Estimation by Accounting for Antecedent Discharge Conditions”, Journal of Hydrology, under review.

Zhang, Q., C.J. Harman, and J.W. Kirchner. “Evaluation of Methods for Estimating Long-Range Dependence in Irregular Water Quality Time Series”, manuscript in preparation.

Zhang, Q. and W.P. Ball. “Non-stationary Concentration-Discharge Relationships: A Top-down Synthesis of Nutrient and Sediment Patterns in the Major Tributaries to Chesapeake Bay”, manuscript in preparation.

Zhang, Q. and W.P. Ball. “What Can We Learn from Limited Data? Statistical Inferences and Uncertainties of Riverine Fluxes and Trends with Limited Sampling of Extreme-Flow Events”, manuscript in preparation.

DATA PUBLICATIONS

Zhang, Q. and W.P. Ball. 2016. “Data associated with Improved Method for Interpretation of Concentration-Discharge Relationships in Riverine Water-Quality Data”, Johns Hopkins University Data Archive, dx.doi.org/10.7281/T18G8HM0.

Zhang, Q. and W.P. Ball. 2016. “Data associated with Decadal-scale export of nitrogen, phosphorus, and sediment from the Susquehanna River basin, USA: Analysis and synthesis of temporal and spatial patterns”, Johns Hopkins University Data Archive, dx.doi.org/10.7281/T1QN64NW.

Zhang, Q. and W.P. Ball. 2014. “Data associated with Long-term seasonal trends of nutrients and sediment from the nontidal Chesapeake Bay Watershed”, Johns Hopkins University Data Archive, dx.doi.org/10.7281/T1VD6WC7.

Zhang, Q. and W.P. Ball. 2014. “Data associated with Long-term seasonal trends of nitrogen, phosphorus, and suspended sediment load from the non-tidal Susquehanna River Basin to Chesapeake Bay”, Johns Hopkins University Data Archivedx.doi.org/10.7281/T1KW5CX5.

CONFERENCE PRESENTATIONS

Zhang, Q., C.J. Harman, and W.P. Ball. 2016. “An Improved Method for Interpretation of Concentration-Discharge Relationships in Riverine Water-Quality Data”, poster presentation at American Geophysical Union Fall Meeting, San Francisco, CA, December 12-16, 2016.

W.P. Ball and Q. Zhang. 2016. “Improving Riverine Constituent Concentration and Flux Estimation by Accounting for Antecedent Discharge Conditions”, oral presentation at American Geophysical Union Fall Meeting, San Francisco, CA, December 12-16, 2016.

Zhang, Q., R.M. Hirsch, and W.P. Ball, 2016. “Temporal Changes in Net Deposition of Sediment and Nutrients behind Conowingo Dam under Different Flow Conditions: Statistical Evaluations of Monitoring Data between 1987 and 2013”, oral presentation at Chesapeake Modeling Symposium, Williamsburg, VA, June 1-2, 2016.

Zhang, Q., D.C. Brady, W.R. Boynton, and W.P. Ball, 2016. “Nutrient and Sediment Trends from the Nontidal Chesapeake Bay Watershed: Synthesis of Progress by Season for the Nine Major Tributaries”, oral presentation at Chesapeake Modeling Symposium, Williamsburg, VA, June 1-2, 2016.

Zhang, Q., R.M. Hirsch, and W.P. Ball, 2016. “Effects of Reservoir Filling on Sediment and Nutrient Delivery from Susquehanna River to Chesapeake Bay: Input-Output Analyses based on Long-Term Monitoring”, invited oral presentation at U.S. Geological Survey MD-DE-DC Water Science Center Seminars, Baltimore, MD, April 12, 2016.

Zhang, Q., R.M. Hirsch, and W.P. Ball, 2016. “Effects of Reservoir Filling on Sediment and Nutrient Removal in the Lower Susquehanna River Reservoir System: An Input-Output Analysis based on Long-Term Monitoring”, invited oral presentation at Chesapeake Bay Program's Scientific and Technical Advisory Committee (STAC) Workshop: Conowingo Infill Influence on Chesapeake Water Quality, Annapolis, MD, January 13-14, 2016.

Zhang, Q. and W.P. Ball. 2015. “Non-stationary Concentration-Discharge Relationships for Nitrogen, Phosphorus, and Sediment for Nine Major Tributaries of the Chesapeake Bay”, oral presentation at American Geophysical Union Fall Meeting, San Francisco, CA, December 14-18, 2015.

W.P. Ball, Q. Zhang, and R.M. Hirsch. 2015. “Effects of Reservoir Filling on Sediment and Nutrient Removal in the Lower Susquehanna River Reservoir: An Input-Output Analysis Based on Long-Term Monitoring”, oral presentation at American Geophysical Union Fall Meeting, San Francisco, CA, December 14-18, 2015.

Zhang, Q. and W.P. Ball. 2015. Concentration-Discharge Relationships for Nutrients and Sediment in Major Tributaries to Chesapeake Bay: Typical Patterns and Non-Stationarity, poster presentation at Maryland Water Monitoring Council Annual Conference, Linthicum Heights, MD, November 13, 2015.

Zhang, Q., W.P. Ball., and D.L. Moyer. 2015. “Long-Term Export of Nitrogen, Phosphorus, and Sediment in the Susquehanna River Basin: Analysis of Decadal-Scale Trends and Sub-Basin Mass Balances”, oral presentation at Geological Society of America Annual Meeting, Baltimore, MD, November 1-4, 2015.

Ball, W.P., Q. Zhang, D.C. Brady, and W.R. Boynton. 2015. “Long-term Trends of Nutrients and Sediment from the Non-tidal Chesapeake Watershed: An Assessment of Progress by River and Season”, oral presentation at Association of Environmental Engineering and Science Professors Annual Conference, New Heaven, CT, June 13-16, 2015.

Zhang, Q., C.J. Harman, and W.P. Ball. 2014. “Evaluation of Methods for Estimating Long-Range Dependence in Water Quality Time Series with Missing Data and Irregular Sampling”, poster presentation at American Geophysical Union Fall Meeting, San Francisco, CA, December 15-19, 2014.

Ball, W.P., Q. Zhang, D.C. Brady, and W.R. Boynton. 2014. “Long-Term Loads of Nutrients and Sediment from Non-Tidal Regions of the Chesapeake Bay Watershed: An Assessment of Seasonal Trends and Progress”, poster presentation at American Geophysical Union Fall Meeting, San Francisco, CA, December 15-19, 2014.

Wei, H., D. Ha, Q. Zhang, and W.P. Ball. 2014. “Effectiveness of Nitrogen Assimilation in the Non-Tidal Chesapeake Bay Watershed: Evaluations Based on Thirty Years of Data”, poster presentation at American Geophysical Union Fall Meeting, San Francisco, CA, December 15-19, 2014.

Ha, D., H. Wei, Q. Zhang, and W.P. Ball. 2014. Retrospective Analysis of Sediment-associated Phosphorus Concentration in the Non-Tidal Chesapeake Bay Watershed, poster presentation at Maryland Water Monitoring Council Annual Conference, Linthicum Heights, MD, November 21, 2014.

Ha, D., H. Wei, Q. Zhang, and W.P. Ball. 2014. Nitrogen Source Input from the Non-Tidal Chesapeake Bay Watershed and Output in the Major Rivers: Evaluation of Changes Based on Long-term Data, poster presentation at Maryland Water Monitoring Council Annual Conference, Linthicum Heights, MD, November 21, 2014.

Wei, H., D. Ha, Q. Zhang, and W.P. Ball. 2014. “Retrospective Analysis of Phosphorus Source Input and Riverine Output in the Chesapeake Bay Watershed”, poster presentation at Maryland Water Monitoring Council Annual Conference, Linthicum Heights, MD, November 21, 2014.

Zhang, Q. and W.P. Ball. 2014. “Decadal-scale Trends of Nutrients and Sediment from the Non-tidal Chesapeake Bay Watershed: Are We Making of Progress in Loading Reduction”, poster presentation at Gordon Research Conference - Environmental Sciences: Water, Holderness, NH, June 22-27, 2014.

Zhang, Q. and W.P. Ball. 2014. “Nutrient and Sediment Delivery from the Susquehanna River to Chesapeake Bay: Long-term Changes in Loading Trend and Reservoir Sedimentation”, oral presentation at Chesapeake Modeling Symposium, Annapolis, MD, May 28-29, 2014.

Zhang, Q. and W.P. Ball. 2014. “Long-term trends and mass-balance of nutrient and sediment loadings in the Lower Susquehanna River Watershed”, invited oral presentation at Chesapeake Bay Program Modeling Quarterly Review Meeting, Annapolis, MD, January 7, 2014.

Zhang, Q. and W.P. Ball. 2013. “Long-term Seasonal Trends of Nutrients and Sediment from the Non-tidal Chesapeake Bay Watershed: An Assessment of Progress in Loading Reduction”, oral presentation at American Water Resources Association Annual Conference, Portland, OR, November 4-7, 2013.

Zhang, Q. and W.P. Ball. 2013. “Nutrient and Sediment Loads Delivered through the Conowingo Reservoir”, invited oral presentation at Maryland Department of Natural Resources Conowingo Dam Sediment Load Meeting, Annapolis, MD, August 19, 2013.

Zhang, Q., D.C. Brady, and W.P. Ball. 2013. “Application of a USGS Statistical Tool (WRTDS) toward Assessing Watershed Management and Reservoir Function in the Susquehanna River Basin”, poster presentation at Association of Environmental Engineering and Science Professors 50th Anniversary Conference, Golden, CO, July 14-16, 2013.

Zhang, Q., D.C. Brady, and W.P. Ball. 2013. “Long-term Seasonal Trends of Nitrogen, Phosphorus, and Suspended Sediment Load from the Non-tidal Susquehanna River Basin to Chesapeake Bay”, poster presentation at Community Surface Dynamics Modeling System Annual Meeting, Boulder, CO, March 23-25, 2013.

Zhang, Q. and W.P. Ball. 2012. “Long-term Seasonal Nutrient Trends for the Non-tidal Portions of the Major Tributaries to Chesapeake Bay”, poster presentation at Chesapeake Modeling Symposium, Annapolis, MD, May 21-22, 2012.

SYNERGISTIC ACTIVITIES

Member, Geological Society of America (GSA), 2015-present.

Member, American Geophysical Union (AGU), 2014-present.

Member, American Water Resources Association (AWRA), 2013-present.

Member, Assoc. of Environ. Engineering and Science Professors (AEESP), 2013-present.

Member, American Water Works Association (AWWA), 2012-present.

Member, Community Surface Dynamics Modeling System (CSDMS), 2012-present.