UMBC Joint Center for Earth Systems Technology (JCET)
Browse by
The Joint Center for Earth Systems Technology (JCET) was formed under a Cooperative agreement between the Earth Science Division of NASA Goddard Space Flight Center (GSFC) and the University of Maryland, Baltimore County (UMBC) in 1995. The JCET family consists of its business staff, students, research faculty, GSFC Sponsors, appointed fellows and affiliated tenured/tenure-track faculty. JCET is an innovative center where these scientists interact in a seamless fashion with the support of an efficient business and administrative unit.
Recent Submissions
-
Emission factors and evolution of SO2 measured from biomass burning in wild and agricultural fires
(EGU, 2022-05-13)Fires emit sufficient sulfur to affect local and regional air quality and climate. This study analyzes SO2 emission factors and variability in smoke plumes from US wild and agricultural fires, and their relationship to ... -
Introducing a VIIRS-based Fire Emission Inventory version 0 (VFEIv0)
A new open biomass burning inventory is presented that relies on the fire radiative power data from the Visible Infrared Imaging Radiometer Suite (VIIRS) onboard the Suomi NPP satellite. This VIIRS-based Fire Emission ... -
Lidar equation for ocean surface and subsurface
(Optica, 2010-10-12)The lidar equation for ocean at optical wavelengths including subsurface signals is revisited using the recent work of the radiative transfer and ocean color community for passive measurements. The previous form of the ... -
A vector radiative transfer model for coupled atmosphere and ocean systems with a rough interface
(Elsevier, 2009-12-21)We report on an exact vector (polarized) radiative transfer (VRT) model for coupled atmosphere and ocean systems. This VRT model is based on the successive order of scattering (SOS) method, which virtually takes all the ... -
CALIPSO lidar ratio retrieval over the ocean
(Optica, 2011-09-09)We are demonstrating on a few cases the capability of CALIPSO to retrieve the 532 nm lidar ratio over the ocean when CloudSat surface scattering cross section is used as a constraint. We are presenting the algorithm used ... -
An optimization approach for aerosol retrievals using simulated MISR radiances
(Elsevier, 2011-06-13)Currently, many satellite-based aerosol retrievals make use of lookup tables (LUTs) containing precomputed solutions to the radiative transfer (RT) equation. The benefit of this strategy is the avoidance of expensive runtime ... -
Cirrus optical depth and lidar ratio retrieval from combined CALIPSO-CloudSat observations using ocean surface echo
(AGU, 2012-03-08)[1] Ocean surface observations from the CloudSat radar and the spaceborne lidar aboard the Cloud Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) platform are combined in the Synergized Optical Depth ... -
Comment on the transmission matrix for a dielectric interface
(Elsevier, 2012-07-07)In a recent paper the reflection and transmission matrices for a dielectric interface based on Fresnel formulas are derived [Garcia RDM. Fresnel boundary and interface conditions for polarized radiative transfer in a ... -
Equivalent path lengths in an integrating cavity: comment
(Optica, 2010-01-22)The equivalent absorption path length in an integrating cavity is examined. In an otherwise excellent paper, Tranchart et al. [Appl. Opt. 35, 7070 (1996)] made an important error in obtaining the expressions for the ... -
Decoupling error for the atmospheric correction in ocean color remote sensing algorithms
(Elsevier, 2010-04-03)This paper studies the decoupling error associated with the atmospheric correction procedures in the ocean color remote sensing algorithms. The decoupling error is caused by the lack of proper consideration of multiple ... -
Occurrence, liquid water content, and fraction of supercooled water clouds from combined CALIOP/IIR/MODIS measurements
(AGU, 2010-10-07)The CALIOP depolarization measurements, combined with backscatter intensity measurements, are effective in discriminating between water clouds and ice clouds. The same depolarization measurements can also be used for ... -
A vector radiative transfer model for coupled atmosphere and ocean systems based on successive order of scattering method
(Optica, 2009-02-02)A vector radiative transfer model has been developed for coupled atmosphere and ocean systems based on the Successive Order of Scattering (SOS) Method. The emphasis of this study is to make the model easy-to-use and ... -
Invisibility cloaks for irregular particles using coordinate transformations
(Optica, 2008-04-16)Invisibility cloaks for ellipsoids, rounded cuboids and rounded cylinders have been studied on the basis of the coordinate transformation approach. The resultant material property tensors for irregular cloaks are more ... -
Monostatic lidar/radar invisibility using coated spheres
(Optica, 2008-01-18)The Lorenz-Mie theory is revisited to explicitly include materials whose permeability is different from unity. The expansion coefficients of the scattered field are given for light scattering by both homogeneous and coated ... -
Zero-backscatter cloak for aspherical particles using a generalized DDA formalism
(Optica, 2008-01-30)The Discrete Dipole Approximation (DDA) formalism has been generalized to materials with permeabilities µ ≠ 1 to study the scattering properties of impedance-matched aspherical particles and cloaked spheres. We have shown ... -
The far-field modified uncorrelated single-scattering approximation in light scattering by a small volume element
(Optica, 2007-06-22)Consider light scattering by a small volume element filled with randomly positioned particles, the far-field modified uncorrelated single-scattering approximation (MUSSA) leads to the incoherent summation of the phase ... -
Electric and magnetic energy density distributions inside and outside dielectric particles illuminated by a plane electromagnetic wave
(Optica, 2005-05-31)We have studied the distribution of the electric and magnetic energy densities within and in the vicinity outside a dielectric particle illuminated by a plane electromagnetic wave. Numerical simulations were performed by ... -
Aerosol radiative forcing over liquid water clouds based on A-Train synergies and active/passive polarized observations
(AIP, 2013-05-10)We used the A-Train observations as inputs of the Matrix Operator MOdel to study the effect of aerosol forcing above bright liquid water clouds in the Gulf of Guinea and to determine the vertical profile of heating rates ... -
Exact first order scattering correction for vector radiative transfer in coupled atmosphere and ocean systems
(SPIE, 2012-06-08)We have developed a Vector Radiative Transfer (VRT) code for coupled atmosphere and ocean systems based on the successive order of scattering (SOS) method. In order to achieve efficiency and maintain accuracy, the scattering ... -
CALIPSO Lidar Measurements for Ocean Subsurface Studies
Since launching in April 2006 the primary objective of the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) mission has been studying the climate impact of clouds and aerosols in the atmosphere. ...
RSS 1.0