CURRICULUM VITAE

Name:

Jeffrey Phillip WALKER

Address:

Room 409, Building D

 

Department of Civil and Environmental Engineering

 

The University of Melbourne

 

Victoria 3010, Australia

 

 

Tel: +61 3 8344 5590 Fax: +61 3 8344 6215

 

E-Mail: j.walker@unimelb.edu.au


EDUCATION


1996 - 1999 : Doctor of Philosophy

Work was commenced on my PhD in March 1996 at the Department of Civil, Surveying and Environmental Engineering, The University of Newcastle, Australia. The topic of my PhD was Estimating Soil Moisture Profile Dynamics From Near-Surface Soil Moisture Measurements and Standard Meteorological Data. This research was supervised by Associate Professor Garry Willgoose and Professor Jetse Kalma. My thesis was submitted for examination in June 1999 and accepted without change in February 2000.

Soil moisture varies in both time and space as a function of atmospheric forcing, soil properties and topography. Model estimates of this variation in soil moisture are often poor due to inherent model errors and an inaccurate knowledge of model inputs. Soil moisture measurements may be made at discrete points, but they are not always representative of the spatial variation in soil moisture. Remote sensing observations provide information on soil moisture in a thin surface layer at discrete times, but do not provide any information on soil moisture with depth. To overcome these shortcomings, an effective soil moisture monitoring scheme must utilise: (i) point measurements for model calibration and evaluation; and (ii) remote sensing observations for updating of the model to overcome the effects of model error and model input inadequacies.

This research investigated the effectiveness of the soil moisture monitoring scheme outlined above. In order to achieve this, it was required to develop an appropriate distributed soil moisture model for soil moisture forecasting, and to collect appropriate data for model calibration, evaluation and updating. Research efforts were focused on the following issues: (i) measurement of surface soil moisture from remote sensing; (ii) estimation of the satellite observation depth; (iii) techniques for assimilation of surface observations into the hydrologic model; (iv) importance of increasing the satellite observation depth on profile retrieval; (v) required frequency of surface observations to keep the model on-track; and (vi) the necessity for accurate model forcing and soil parameter values in such a soil moisture monitoring scheme.

1991 - 1995: Bachelor of Surveying and Bachelor of Engineering (Civil)

During this period individual degrees were completed for both Bachelor of Surveying and Bachelor of Engineering (Civil) at the Department of Civil, Surveying and Environmental Engineering, The University of Newcastle, Australia.

Honours Class 1 and University Medal were obtained for both degrees.

The title of my Honours project was Accuracy of DEMs (Digital Elevation Models). This research investigated the magnitude of elevation errors in published DEMs and the effect these errors may have on potential applications of this data. Of particular interest was the effect of these errors on hydrologic modelling. This investigation involved a Monte-Carlo analysis of geomorphic parameters used in hydrology by making comparisons with an accurate DEM. Hydromorphic parameters investigated include: (i) inferred catchment shape, size and stream network; (ii) width function; (iii) cumulative area diagram; and (iv) slope area diagram.


HONOURS AND AWARDS



RESEARCH INTERESTS


My primary research ambition is to lead programs in socially relevant research that will have a positive impact on the way we take care of the environment so as to result in an improved quality of life both now and in the generations to come. I believe that the key to this is through improved earth system state and flux monitoring, prediction and reporting, in a way that is relevant to policy and decision making processes, flood and drought prediction and assessment, land and water management, national weather and climate forecasting, etc. My vision is that this goal will be realised through a combination of i) environmental sensing, ii) earth system modelling, and iii) optimal convergence of model predictions with observations through data assimilation. This is a new area of research that has gained wide spread interest over the past years.


PROFESSIONAL EXPERIENCE


Research Grants

Research Projects

Research Collaborations

Teaching and Related Experience


PROFESSIONAL AFFILIATIONS



EMPLOYMENT HISTORY


2007 - Present: Associate Professor and Reader - The University of Melbourne

I am currently employed as an associate professor and reader in the Department of Civil and Environmental Engineering, The University of Melbourne, Australia. I am managing a number of research projects in addition to teaching.

2003 - 2006: Senior Lecturer - The University of Melbourne

Employed as a senior lecturer in the Department of Civil and Environmental Engineering, The University of Melbourne, Australia. During that period I managed a number of research projects in addition to teaching.

2001 - 2003: Lecturer - The University of Melbourne

Employed as a lecturer in the Department of Civil and Environmental Engineering, The University of Melbourne, Australia. During that period I managed a number of research projects in addition to teaching.

1999 - 2001: Research Scientist - NASA Goddard Space Flight Center

During this period I was employed in a research scientist position at NASA's Goddard Space Flight Center, firstly with USRA (Universities Space Research Association) as part of the Goddard Visiting Scientist Program (GVSP) and then with the University of Maryland Baltimore County (UMBC) as part of the Goddard Earth Sciences and Technology (GEST) Center. The main project I worked on was entitled Optimal Land Initialisation for Seasonal Climate Prediction and sought to provide optimal initialisation of the NSIPP (NASA Seasonal to Interanual Prediction Project) land surface model, through assimilation of near-surface soil moisture observations into the land surface model. In addition, I was the PI on a project entitled Assimilation of Remotely Sensed Snow Observations into the NSIPP Land Surface Model and Co-I on a project entitled A Global Land Data Assimilation Scheme. I also collaborated with the Land Data Assimilation Schemes project.

1996 - 1999: PhD Scholar - The University of Newcastle

During this period I conducted research towards my PhD at the Department of Civil, Surveying and Environmental Engineering, The University of Newcastle, Australia. Details of my doctoral research have been provided above.

1992 - 1996: Marshall Scott - Surveying and Land Development Consultants

During university vacations I was employed by Marshall Scott, Surveying and Land Development Consultants, Cessnock, as an undergraduate Surveyor. Responsibilities included cadastral, topographic, and engineering surveys and design work. Engineering designs included plans of road widening and subdivision layouts. I was also responsible for the preparation of an entire drainage design for a 40 lot subdivision.

1991 - 1992: Monteath and Powys - Consulting Surveyors and Planners

During university vacations I was employed by Monteath and Powys, Consulting Surveyors and Planners, Newcastle, as a Surveyors Assistant. Responsibilities included assisting with cadastral, topographic, hydrographic and engineering surveys. Field work duties included instrument use and general assistance. Office duties included general plan preparation and calculations.

1989 - 1991: Collins, Walshe and Fitzsimmons - Consulting Surveyors and Engineers

During university vacations I was employed by Collins Walshe and Fitzsimmons, Consulting Surveyors and Engineers, Taree, as a Surveyors Assistant. Responsibilities included assisting with cadastral, topographic, and engineering surveys. Field work duties included instrument use and general assistance. Office duties included general plan preparation and calculations.


GENERAL SKILLS


Language

Computing Skills


REFEREES


Details of referees provided upon request


PUBLICATIONS


Publication List


PERSONAL INTERESTS



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