NOGAPS/NAVGEM Comparison (image) Naval Research Laboratory Share Print E-Mail Caption The graph displays the tropical cyclone (TC) track error comparison in nautical miles (nmi) for summer/fall 2012. The NAVGEM TC track error is 30 nmi less than NOGAPS, approximately a 12-hour improvement. Synoptic evaluations of daily weather maps show reduced surface pressure errors with NAVGEM, particularly for maritime lows that impact the safety of ships at sea. Credit US Naval Research Laboratory Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.