Airspace capacity constraints caused by adverse weather are a major driver for enhanced Traffic Flow Management (TFM) capabilities. One of the most prominent TFM initiatives introduced in recent years is the Airspace Flow Program (AFP) (Brennan, 2007). AFPs are used to plan and manage flights through airspace constrained by severe weather. Aircraft with filed flight plans through the AFP region...

A method is presented to divide the total congestion delay in a freeway section into six components: the delay caused by incidents, special events, lane closures, and adverse weather; the potential reduction in delay at bottlenecks that ideal ramp metering can achieve; and the remaining delay, due mainly to excess demand. The fully automated method involves two steps. First, the components of n...

During peak periods of operation, the National Airspace System (NAS) suffers from limited resources. Traffic Flow Management (TFM) is responsible for adjusting traffic flow demand to meet the available capacity. In the case of airports, TFM uses the Ground Delay Program (GDP) to allocate the constrained runway resources. This paper describes a tool for forecasting the likelihood of a GDP at an ...

Thunderstorms are a leading cause of delay in the National Airspace System (NAS), and significant research has been conducted to predict the areas pilots will avoid during a storm. An example of such research is the Convective Weather Avoidance Model (CWAM), which provides the likelihood of pilot deviation due to convective weather in a given area. This paper extends the scope of CWAM to includ...

Modern troposphere delay models like the Vienna Mapping Functions (VMF1) are based on data from Numerical Weather Models (NWM) with a time resolution of typically 6 hours. Different from purely analytical formulations like the Global Mapping Functions, the VMF1 can account for real weather phenomena like changing high and low pressure systems and are thus more accurate. Additionally, the zenith...

Introduction: The NAS is the infrastructure that supports the 60000 daily flights over the United States. The hub and spoke operations of various airlines has changed traffic patterns and contributed significantly to congestion and delay in the NAS. Growth of air traffic, matching or exceeding growth in capacity and occasional bad weather, has added to this congestion and delay. Air traffic del...

Even though real-time data access to remote sensor data is desirable for many WSN applications, collecting remote data reliably from a WSN is a challenging task since many components of the WSN are subject to harsh elements of nature. A deployed system’s performance and lifetime can be impaired if this harsh environment of the deployment site is not considered. The deployments of LUSTER, a WSN ...