Mahta Moghaddam

Datos Biográficos

ID7996410
NOMBREMahta Moghaddam
NOMBRESMahta
APELLIDOMoghaddam
FIRMAMOGHADDAM M
AFILIACIONESUniversity of Southern California
ORCID0000-0001-5304-2616
VERIFICADOSí
TOTAL DE OBRAS5
TOTAL DE CITAS0
TOTAL COMO AUTOR5
TOTAL COMO EDITOR0
PRIMER AÑO DE PUBLICACIÓN2021
AÑO MÁS RECIENTE DE PUBLICACIÓN2024
ÍNDICE H0

  • Integrating multi-source remote sensing data for mapping boreal forest canopy height and species in interior Alaska in support of radar modeling

    Open AccessYuhuan Zhao, Yu-Huan Zhao et al.ARTICLEEnvironmental Research Letters2024

    Vegetation information is essential for analyzing aboveground biomass and understanding subsurface characteristics, such as root biomass, soil organic matter, and soil moisture conditions. In this study, we mapped boreal forest canopy height (FCH) and forest species (FS) distributions in the Delta Junction region of interior Alaska, by integrating multi-source remote sensing observations within a machine learning framework based on the extreme gr…

  • Maps of active layer thickness in northern Alaska by upscaling P-band polarimetric synthetic aperture radar retrievals

    Open AccessJ Whitcomb, Richard Chen et al.ARTICLEEnvironmental Research Letters2023

    Extensive, detailed information on the spatial distribution of active layer thickness (ALT) in northern Alaska and how it evolves over time could greatly aid efforts to assess the effects of climate change on the region and also help to quantify greenhouse gas emissions generated due to permafrost thaw. For this reason, we have been developing high-resolution maps of ALT throughout northern Alaska. The maps are produced by upscaling from high-res…

  • Widespread deepening of the active layer in northern permafrost regions from 2003 to 2020

    Open AccessZhihua Liu, John S Kimball et al.ARTICLEEnvironmental Research Letters2023

    The changing thermal state of permafrost is an important indicator of climate change in northern high latitude ecosystems. The seasonally thawed soil active layer thickness (ALT) overlying permafrost may be deepening as a consequence of enhanced polar warming and widespread permafrost thaw in northern permafrost regions (NPRs). The associated increase in ALT may have cascading effects on ecological and hydrological processes that impact climate f…

  • A model to characterize soil moisture and organic matter profiles in the permafrost active layer in support of radar remote sensing in Alaskan Arctic tundra

    Open AccessKazem Bakian-Dogaheh, Richard H Chen et al.ARTICLEEnvironmental Research Letters2022

    Organic matter (OM) content and a shallow water table are two key variables that govern the physical properties of the subsurface within the active layer of arctic soils underlain by permafrost, where the majority of biogeochemical activities take place. A detailed understanding of the soil moisture and OM profile behavior over short vertical distances through the active layer is needed to adequately model the subsurface physical processes. To ob…

  • Active layer thickness as a function of soil water content

    Open AccessLeah K Clayton, Kevin Schaefer et al.ARTICLEEnvironmental Research Letters2021

    Active layer thickness (ALT) is a critical metric for monitoring permafrost. How soil moisture influences ALT depends on two competing hypotheses: (a) increased soil moisture increases the latent heat of fusion for thaw, resulting in shallower active layers, and (b) increased soil moisture increases soil thermal conductivity, resulting in deeper active layers. To investigate their relative influence on thaw depth, we analyzed the Field Measuremen…