Next Article in Journal
Multitemporal Hyperspectral Data Fusion with Topographic Indices—Improving Classification of Natura 2000 Grassland Habitats
Previous Article in Journal
Structural 3D Reconstruction of Indoor Space for 5G Signal Simulation with Mobile Laser Scanning Point Clouds
Letter

The Impact of the Radar-Sampling Volume on Multiwavelength Spaceborne Radar Measurements Using Airborne Radar Observations

1
Institute for Geophysics and Meteorology, University of Cologne, DEA23 05315 Cologne, Germany
2
National Centre for Earth Observation, University of Leicester, Leicester LE1 7RH, UK
3
School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY 11790, USA
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Remote Sens. 2019, 11(19), 2263; https://doi.org/10.3390/rs11192263
Received: 29 July 2019 / Revised: 18 September 2019 / Accepted: 25 September 2019 / Published: 28 September 2019
(This article belongs to the Section Remote Sensing in Geology, Geomorphology and Hydrology)
Multiwavelength radar observations have demonstrated great potential in improving microphysical retrievals of cloud properties especially in ice and snow precipitation systems. Advancements in spaceborne radar technology have already fostered the launch in 2014 of the first multiwavelength radar system in space, while several future spaceborne multiwavelength radar concepts are under consideration. However, due to antenna size limitations, the sampling volume of spaceborne radars is considerably larger than those achieved by surface- and airborne-based radars. Here, the impact of these large sampling volumes in the information content of the Dual-Wavelength Ratio estimates at Ka-W, Ku-Ka is investigated. High-resolution airborne multiwavelength radar observations during the Olympic Mountain Experiment (OLYMPEx) are used to perform retrievals of ice/snow characteristic particle size, such as mass-weighted particle diameter. To mimic the different satellite sampling volumes, a moving average is applied to the airborne measurements. The radar-observed variables (reflectivity and dual-wavelength ratios) and retrieved microphysical properties at the coarser resolution are compared against those at the original resolution. Our analysis indicates that future Ka-W spaceborne radar missions should take into account the impact of the radar resolution volume on the retrieval of microphysical properties and avoid footprints larger than 2–3 km. View Full-Text
Keywords: radar remote sensing; spaceborne radars; multi-frequency radar systems; different radar-sampling volumes; cloud ice microphysics radar remote sensing; spaceborne radars; multi-frequency radar systems; different radar-sampling volumes; cloud ice microphysics
Show Figures

Graphical abstract

MDPI and ACS Style

Pfitzenmaier, L.; Battaglia, A.; Kollias, P. The Impact of the Radar-Sampling Volume on Multiwavelength Spaceborne Radar Measurements Using Airborne Radar Observations. Remote Sens. 2019, 11, 2263. https://doi.org/10.3390/rs11192263

AMA Style

Pfitzenmaier L, Battaglia A, Kollias P. The Impact of the Radar-Sampling Volume on Multiwavelength Spaceborne Radar Measurements Using Airborne Radar Observations. Remote Sensing. 2019; 11(19):2263. https://doi.org/10.3390/rs11192263

Chicago/Turabian Style

Pfitzenmaier, Lukas, Alessandro Battaglia, and Pavlos Kollias. 2019. "The Impact of the Radar-Sampling Volume on Multiwavelength Spaceborne Radar Measurements Using Airborne Radar Observations" Remote Sensing 11, no. 19: 2263. https://doi.org/10.3390/rs11192263

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop