AIM/GLOBE partnership: providing remote sensing opportunities for students and teachers to study Noctilucent Clouds
“Aeronomy of Ice In the Mesosphere” (AIM), is a NASA satellite-based research mission scheduled to launch in September 2006. AIM is dedicated to providing a scientific basis for understanding why Polar Mesospheric Clouds (PMCs) form and vary. PMCs are sometimes known as Noctilucent Clouds (NLCs) or “night shinning” clouds because of their visibility during or just before and after twilight. NLCs may well be the only truly visible atmospheric phenomenon associated with global atmospheric change. These clouds that form ~ 50km above the earth, surface usually poleward of 50 latitude, have been increasing with time, becoming brighter and moving toward the equator.
Translating the mission: when the ground-truthers meet the instrument-makers-how students at all points in the "Pipeline" learn about remote sensing
In 1997 the Virginia Space Grant Consortium (VSGC) worked with Old Dominion University, Hampton University, Tidewater Community College and the College of William and Mary to develop a student team to manage the design, fabrication, and launch process for a scientific balloon payload. The expertise available to the VSGC suggested that an environmentally focused payload should address the instrumentation for gathering remotely sensed images and ground-truthing data. The payload was successfully launched on August 25, 1998. Throughout the project all team members worked with precollege students. Questions about the project were responded to through the "Ask A Scientist" page of the web site (http://ixeab2.larc.nasa.gov//sup -/killough/vsgc). The "Lessons Learned" included: 1) Student accountability for accuracy, safety, and project costs is critical, 2) Internet research projects require a high degree of organization, software compatibility, and self-efficacy: judgement that the student himself feels capable of participating in an on-line research project, and 3) The moment of "Aha!" is the primary motivator.
The potential vorticity flux through the Yucatan Channel and the Loop Current in the Gulf of Mexico
Two‐year‐long time series of current and density structure measurements across the Yucatan Channel's main section allow the calculation of the time‐dependent potential vorticity flux between the Gulf of Mexico and the Caribbean Sea, which is characterized by alternating periods of positive (cyclonic) and negative (anti‐cyclonic) vorticity influx. Periods of negative cumulative vorticity influx are related to the Loop Current extending into the Gulf of Mexico, whereas periods of positive cumulative vorticity influx relate to a Loop Current retraction, sometimes coincident with the shedding of an anti‐cyclonic eddy.