Posted on October 1, 2022
Can the Air Mass Factor (AMF) be negative?
Earth ScienceAsked by: Amber Beaumont No, AMF is always positive. Can air mass be negative? The calculated air mass reaches a maximum of 11.13 at 86.6°, becomes zero at 88°, and approaches negative infinity at the horizon. What is air mass factor? The air mass factor (M) represents the relative (dimension- less) length of the mean
Posted on October 1, 2022
Why is the water in Pingualuit crater so pure?
Earth ScienceAsked by: Amber Beaumont How was the Pingualuit crater formed? The crater’s remoteness prevented a geologic expedition until the 1950s, but once they were able to collect data from the site, geologists concluded that the structure was a meteorite crater produced from an impact roughly 1.4 million years ago. Are there fish in Pingualuit Lake?
Posted on October 1, 2022
How to estimate evapotranspiration using moisture sensors?
Earth ScienceAsked by: Michael Christenson What are the methods used to estimate evapotranspiration? Different models which have been used for estimating evapotranspiration are reviewed. They include the eddy correlation model, mass transport model, aerodynamic model, Penman-resistance model and the energy balance model. How is moisture measured with sensors? Capacitance or frequency domain sensors When electric current
Posted on September 30, 2022
Is Alert (in Canada) a harbor/port?
Earth ScienceAsked by: Danielle Hamm Can you fly to Alert Nunavut? Unfortunately, there would not be an opportunity to travel to Alert unless you were able to fly with the military plane or charter an aircraft. There is only a military base there and no permanent inhabitants. The furthest northern point you could travel to by
Posted on September 30, 2022
Old moon in the new moon’s arm
Earth ScienceAsked by: Danielle Hamm What is the old Moon in the new moon’s arms? In the olden days, earthshine was called “the old Moon in the new Moon’s arms.” You’ll also hear it as, “the new Moon in the old Moon’s arms.” Earthshine is sunlight that’s taken a detour. Sunshine hits us, bounces to the
Posted on September 30, 2022
How is surface pressure generally measured, and at what actual height?
Earth ScienceAsked by: Jenny Robinson How do you measure surface pressure? Calculate surface pressure: P=F/A The force is distributed over the entire bearing surface. All that’s left to do is to divide the force by the calculated area to get the surface pressure. Which height is a measure of atmospheric pressure? One atmosphere (101.325 kPa or