ESTIMATING SURFACE ELEVATION BIASES FROM SUBSURFACE SCATTERED PHOTONS FOR LASER ALTIMETERS ...

Three decades of satellite observations have revealed rapid changes in Earth’s cryosphere associated with anthropogenic climate change, including decreased extent and volume of Arctic sea ice, mass loss from the Greenland Ice Sheet, mass loss in West Antarctica and the Antarctic Peninsula, and incre...

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Bibliographic Details
Main Author: Greeley, Adam Paul
Format: Doctoral or Postdoctoral Thesis
Language:English
Published: Digital Repository at the University of Maryland 2017
Subjects:
Remote sensing
cryosphere
laser altimetry
remote sensing
Arctic
Antarctic
The Antarctic
Antarctic Peninsula
West Antarctica
Greenland
Antarc*
Antarctica
Climate change
glacier
Ice Sheet
Sea ice
Online Access:https://dx.doi.org/10.13016/m29w0927d
http://drum.lib.umd.edu/handle/1903/20770
Description
Summary:Three decades of satellite observations have revealed rapid changes in Earth’s cryosphere associated with anthropogenic climate change, including decreased extent and volume of Arctic sea ice, mass loss from the Greenland Ice Sheet, mass loss in West Antarctica and the Antarctic Peninsula, and increased outlet glacier discharge in Greenland and Antarctica. NASA’s ICESat-2 mission will continue observing these rapid changes by measuring individual photons’ round-trip travel times from the satellite to Earth’s surface, providing precise estimates of surface elevation, and subsequent mass change for ice sheets and sea ice freeboard in Earth’s polar regions. This study investigates the potential bias in ICESat-2 surface elevation estimates from photons that have volume scattered in snow by: (1) measuring the transmission of green light through snow, (2) developing a method capable of characterizing the effects of volume scattered photons recorded by laser altimeters, (3) applying this method to laboratory ...

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