| Date | Presentation Name | HTML Slideshow | PPT Download | Audience | Location | Summary |
| May 27, 1997 | "The Impact of the Permanent Tide on GEOID96, G96SSS and NAVD 88" | HTML | PPT | 1997 AGU Spring Meeting | Baltimore, MD | An overview of the three major Permanent Tide systems, and how they affect the geoid models, GPS processing, and levelled heights in the United States. |
| December 10, 1998 | "Implications of Spherical Earth Models for Gravity Reduction Procedures and Geoid Computations" | HTML | N/A | 1998 AGU Autumn Meeting | San Francisco, CA | Using spherical models to prove consistency in terrain reduction techniques. Shows a link between terrain reduction and downward continuation. Cartesian coordinates cause most of the problems in terrain reductions. |
| April 11, 2000 | "Gravity and the Geoid at NGS" | HTML | PPT | 2000 Geodetic Advisor Convocation | Silver Spring, MD | An overview of how a geoid is computed, the data that is needed, a brief look at GEOID99 and a discussion of GPS-derived orthometric heights. |
| May 25, 2000 | "Comparing GEOID99 to the GSD95 Canadian geoid model" | HTML | PPT | 2000 Canadian Geophysical Union Meeting | Banff, Alberta, Canada | A general comparison between the latest official models of the USA and Canada and how they compare at the border. |
| May 26, 2000 | "Recent Geoid Research at NGS" | HTML | PPT | 2000 Canadian Geoid Meeting | Banff, Alberta, Canada | A look at the latest theory and numerical results being investigated for high resolution geoid modeling at NGS. |
| June 2, 2000 | "Use of G99SSS to evaluate the static gravity geopotential derived from the GRACE, CHAMP, and GOCE missions" | HTML | PPT | 2000 AGU Spring Meeting | Washington, DC | Discussion of available data sets for analysis of spherical harmonic models from impending satellite missions, followed by a brief summary of the potential that these models hold for refining the geoid determination process. |
| August, 4 2000 | "Recent Investigations Towards Achieving a One Centimeter Geoid" | HTML | PPT | GGG2000 (IAG Symposium) | Banff, Alberta, Canada | Presentation covering areas of research related to the improvement of hybrid models and Helmertization of surface anomalies to generate improved future geoid models. |
| November 13, 2000 | "Geoid Modeling at NOAA" | HTML | PPT | Scott Gudes | Silver Spring, MD | An overview of the geoid program at NOAA covering definitions, financial impacts of a geoid model, NOAA resources and partnerships, basic geoid theory, and future directions. |
| January 16,
2001 |
"Improved Hybrid Geoid Modeling and the FY 2000 Geoid Models" | HTML | PPT | Brown Bag for Charlie Schwarz
and others |
Silver Spring,
MD |
An overview of research conducted on refining the least squares collocation techniques used to create hybrid geoids at NGS. |
| May 15,
2001 |
"Improved Covariance Modeling of Gravimetric, GPS, and Leveling Data in High-Resolution Hybrid Geoids" | HTML | PPT | CGU 2001 | Ottawa,
CAN |
Presentation of final results of hybrid geoid analysis. |
| October 25,
2001 |
"Gravity and Height Issues Related to the CERP" | HTML | PPT | CERP 2001 | West Palm Beach,
FL |
Discussion of available NGS gravity data in CERP area and its impact on orthometric height determination. |
| January 14,
2004 |
"USGG2003 & GEOID03:Northeast States Geodetic Conference " | HTML | PPT | NE State Advisers | Concord,
NH |
Initial presentation of GEOID03 model focused on NE States. |
| April 19,
2004 |
"Assessment of the New National Geoid Height Model, GEOID03" | HTML | PPT | ACSM Session | Nashville,
TN |
Analysis of the GEOID03 model. |
| May 17-21,
2004 |
"Effect of High Resolution Altimetric Gravity Anomalies on the North America Geoid Computations" | HTML | PPT | AGU Session | Montreal,
CA |
Analysis of the GEOID03 model. |
| July 509
2004 |
"Validation of Gravity Models from CHAMP/GRACE Gravity Missions Using the GPS/leveling Data from the Continental US" | HTML | PPT | CHAMP/GRACE Scientists | Potsdam,
Germany |
Analysis of the GEOID03 model. |
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