Secondary-scale surface roughness parameterization using terrestrial LiDAR

J. C. Landy, A. S. Komarov, D. G. Barber

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

Abstract

The centimeter-scale roughness of natural surfaces, such as soil and sea ice, influences both microwave scattering and turbulent exchanges of heat and momentum between the surface and atmosphere. In this paper, we present a technique for determining surface roughness parameters from high-resolution terrestrial Light Detection and Ranging (LiDAR) data. Field tests demonstrate that the two-dimensional roughness parameters obtained are considerably more precise than parameters determined from traditional one-dimensional profiling techniques. However, laboratory experiments show that the accuracy of the measured roughness parameters is limited by the high inclination scanning angle of the LiDAR system. Results from a numerical model are used to determine a set of calibration functions which can be used to easily correct the LiDAR measurements for the inclination angle effects.

Original languageEnglish
Title of host publication2015 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2015 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages2068-2071
Number of pages4
Volume2015-November
ISBN (Electronic)9781479979295
DOIs
Publication statusPublished - 10 Nov 2015
EventIEEE International Geoscience and Remote Sensing Symposium, IGARSS 2015 - Milan, Italy
Duration: 26 Jul 201531 Jul 2015

Conference

ConferenceIEEE International Geoscience and Remote Sensing Symposium, IGARSS 2015
CountryItaly
CityMilan
Period26/07/1531/07/15

Keywords

  • Geophysical measurements
  • laser applications
  • numerical modelling
  • parameter estimation
  • sea ice
  • surface roughness

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