Ms. Clarissa M. DeLeon Profile

Clarissa M. DeLeon

Grad Student

SPIE Involvement:

Author | Student Chapter President

Area of Expertise:

remote sensing , polarization , instrumentation , wildfires , aerosols

Clarissa began as a Ph.D. student at the Wyant College of Optical Sciences (UAWCOS) in Fall 2020, coming from Montana State University, where she majored in Electrical Engineering with a minor in Optics and Photonics. Now, she works with Professor Meredith Kupinski in the Polarization Lab with a research emphasis on environmental remote sensing. Specifically, she is researching the benefits of multiangle polarimetry in the ultraviolet for wildfire smoke detection. As a proud Latina, Clarissa hopes to become a professor and continue to advocate for Latinx representation in STEM. She is proud to be a part of the legacy of women in optics. Clarissa plans to pay it forward as she establishes herself as a researcher and an optical engineer using polarization science and remote sensing for environmental and medical applications. Outside of school, she likes to crochet, cross-stitch, hike, and read. ¡Èchale ganas!

Proceedings Article | 3 October 2023 Presentation + Paper

Simulating ground-based polarimetric responses using AirMSPI observations from the FIREX-AQ campaign

Clarissa DeLeon, Michael Garay, Olga Kalashnikova, Meredith Kupinski

Proceedings Volume 12690, 126900J (2023) https://doi.org/10.1117/12.2676486

KEYWORDS: Aerosols, Polarimetry, Scattering, Atmospheric particles, Ultraviolet radiation, Simulations, Fire, Polarization, Carbon

Read Abstract +

Wildland fire smoke is one of the major sources of biomass-burning aerosols in the Earth’s atmosphere. As the smoke plume evolves, the biomass-burning aerosols undergo aging processes that change their physical and chemical composition. Capturing rapid temporal changes is not suitable for satellites due to the time lapse between observations. Airborne remote sensing offers the ability to increase the spatial and temporal resolution of smoke plume observations compared to satellite observations. However, this increase in spatial and temporal resolution from airborne observations amplifies the need for better spatial coverage from ground-based instruments for validation. In the summer of 2019, the Airborne Multiangle Spectropolarimetric Imager (AirMSPI) was deployed during the Fire Influence on Regional to Global Environments and Air Quality (FIREX-AQ) field campaign on the NASA ER-2 high-altitude research aircraft. This aircraft performed multiple overpasses of the Williams Flats fire near the town of Spokane, Washington, USA, in August 2019, sampling smoke plumes at a georectifed spatial resolution of 10 m². This work performs aerosol retrievals along the smoke plume observed during one flight on 7 August 2019. The retrieval methods used here follow those established by DeLeon et al. (in review) using the Generalized Retrieval of Atmosphere and Surface Properties (GRASP). Two points along the plume were selected: one at 1.35km and the other at 3.78km from the fire source. The fraction of fine mode aerosols and single scattering albedo increased at the greater distance from this wildfire source. These retrieved aerosol properties were used to simulate ground-based polarimetry in ultraviolet, visible, and infrared wavebands. For all wavebands, the maximum degree of linear polarization (DoLP) decreased farther from the source. Notably, the ultraviolet wavebands retained a higher polarimetric signal farther from the source, compared to the visible and infrared. At 865 nm the DoLP decreased from 48.5% to 14.6%. At 355 nm the DoLP decreased from 33.6% to 22.5%. These polarimetric simulations are intended to inform instrument development for ground-based detection of wildfire smoke.

Proceedings Article | 1 August 2021 Presentation + Paper

UV linear stokes imaging of optically thin clouds

Clarissa DeLeon, James Heath, W. Reed Espinosa, Dong Wu, Meredith Kupinski

Proceedings Volume 11833, 1183302 (2021) https://doi.org/10.1117/12.2595161

KEYWORDS: Aerosols, Clouds, Ultraviolet radiation, Nonuniformity corrections, Scattering, Polarization, Atmospheric particles, Polarimetry, UV optics, Polishing

Read Abstract +

Keywords/Phrases

Search In:

Publication Years