UMBC Joint Center for Earth Systems Technology (JCET)
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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
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Spectral Fidelity of Earth's Terrestrial and Aquatic Ecosystems
(American Geophysical Union, 2021-07-10)Abstract The Surface Biology and Geology (SBG) investigation will create global maps of spectral surface reflectance and emissivity at a cadence of 16 days or better, with coverage to address global questions about Earth's ... -
Variational Bayes Estimation of Hidden Markov Models for Daily Precipitation with Semi-Continuous Emissions
(UMBC HPCF, 2021)Stochastic precipitation generators can simulate dry and wet rainfall stretches for long durations. Generated precipitation time series data are used in climate projections, impact assessment of extreme weather events, ... -
Aerosol properties in cloudy environments from remote sensing observations: a review of the current state of knowledge
(American Meteorological Society, 2021-07-01)Aerosol properties are fundamentally different near clouds than distant from clouds. This paper reviews the current state of knowledge of aerosol properties in the near low cloud environment and quantitatively compares ... -
The thermal infrared optical depth of mineral dust retrieved from integrated CALIOP and IIR observations
(2021-06-28)Recent studies reveal that a higher fraction of coarse mineral dust particles than that estimated by climate model simulations has been observed in the atmosphere, leading to a more significant positive (i.e., warming) ... -
Best Practices In Multilanguage Satellite Remote Sensing Training: Case Studies In Spanish-Speaking Countries [Education]
(IEEE, 2021-06-15)We discuss best practices for developing multilanguage remote sensing training. Our discussion is based on the approach developed by the NASA-funded Applied Remote Sensing Training (ARSET) program for Spanish-speaking ... -
Vertical Transport, Entrainment, and Scavenging Processes Affecting Trace Gases in a Modeled and Observed SEAC⁴RS Case Study
(American Geophysical Union, 2020-04-29)The convectively driven transport of soluble trace gases from the lower to the upper troposphere can occur on timescales of less than an hour, and recent studies suggest that microphysical scavenging is the dominant removal ... -
Validation of satellite formaldehyde (HCHO) retrievals using observations from 12 aircraft campaigns
(Copernicus Publications, 2020-10-29)Formaldehyde (HCHO) has been measured from space for more than 2 decades. Owing to its short atmospheric lifetime, satellite HCHO data are used widely as a proxy of volatile organic compounds (VOCs; please refer to Appendix ... -
Missing OH reactivity in the global marine boundary layer
(Copernicus Publications, 2020-04-02)The hydroxyl radical (OH) reacts with thousands of chemical species in the atmosphere, initiating their removal and the chemical reaction sequences that produce ozone, secondary aerosols, and gas-phase acids. OH reactivity, ... -
Comprehensive isoprene and terpene gas-phase chemistry improves simulated surface ozone in the southeastern US
(Copernicus Publications, 2020-03-30)Ozone is a greenhouse gas and air pollutant that is harmful to human health and plants. During the summer in the southeastern US, many regional and global models are biased high for surface ozone compared to observations. ... -
Hyperspectral-LIDAR system and data product integration for terrestrial applications
(SPIE, 2009-08-17)This manuscript details the development and validation of a unique forward thinking instrument and methodology for monitoring terrestrial carbon dynamics through synthesis of existing hyperspectal sensing and Light Detection ... -
Urban aerosol chemistry at a land-water transition site during summer – Part 2: Aerosol pH and liquid water content
(Copernicus Publications, 2021-05-28)Particle acidity (aerosol pH) is an important driver of atmospheric chemical processes and the resulting effects on human and environmental health. Understanding the factors that control aerosol pH is critical when enacting ... -
Heterogeneity and Chemical Reactivity of the Remote Troposphere defined by Aircraft Measurements
(Copernicus Publications, 2021-05-19)The NASA Atmospheric Tomography (ATom) mission built a photochemical climatology of air parcels based on in situ measurements with the NASA DC-8 aircraft along objectively planned profiling transects through the middle of ... -
Harmonized Emissions Component (HEMCO) 3.0 as a versatile emissions component for atmospheric models: application in the GEOS-Chem, NASA GEOS, WRF-GC, CESM2, NOAA GEFS-Aerosol, and NOAA UFS models
(EGU Publications, 2021-05-03)Emissions are a central component of atmospheric chemistry models. The Harmonized Emissions Component (HEMCO) is a software component for computing emissions from a user-selected ensemble of emission inventories and ... -
Anthropogenic Decline of African Dust inferred from Insights From the Holocene Records and Beyond: are dust purely natural?
(Copernicus Publications, 2021-04-19) -
Relating changing aerosols to changing clouds: two decades of Terra and Aqua observations
(Copernicus Publications, 2021-04-19) -
Understanding the Role of Mean and Eddy Momentum Transport in the Rapid Intensification of Hurricane Irma (2017) and Hurricane Michael (2018)
(MDPI, 2021-04-14)The prediction of rapid intensification (RI) in tropical cyclones (TCs) is a challenging problem. In this study, the RI process and factors contributing to it are compared for two TCs: an axis-symmetric case (Hurricane ... -
On the Tidal History and Future of the Earth–Moon Orbital System
(IOP, 2021-04-06)Earth’s rotation rate and the evolution of the Earth–Moon system have been controlled by tidal dissipation in Earth’s ocean. Attempts to model the tidal history have shown incomplete compatibility with observations and ... -
Wintertime Methane Emission From the Barents and Kara Seas and Sea of Okhotsk: Satellite Evidence.
Existence of strong seabed sources of methane, including gas hydrates, in the Arctic and sub-Arctic seas with proven oil/gas deposits is well documented. Enhanced concentrations of dissolved methane in deep layers are ... -
Organic Vapor Condensation in Pyro-cumulonimbus Outflow Explains Large Stratospheric Smoke Mass Injection and Thickly Coated Black Carbon
Airborne measurements of upper troposphere and lower stratosphere biomass burning smoke show a large size mode at 350nm radius. Furthermore, very thickly coated black carbon (300-400nm radius) is observed in 2 month aged ...
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