A5100604543- Water Quality Monitoring Technologies
- Atmospheric and Environmental Gas Dynamics
- Hydrology and Watershed Management Studies
- Marine and coastal ecosystems
- Marine and fisheries research
- Fire effects on ecosystems
- Urban Heat Island Mitigation
- Fish Ecology and Management Studies
- Flood Risk Assessment and Management
- Geophysics and Gravity Measurements
- Coastal and Marine Management
- Plant Water Relations and Carbon Dynamics
- Cryospheric studies and observations
- Remote Sensing in Agriculture
- Coastal wetland ecosystem dynamics
- Fecal contamination and water quality
- Coral and Marine Ecosystems Studies
- Education and Critical Thinking Development
- Planetary Science and Exploration
- Aeolian processes and effects
- Recreation, Leisure, Wilderness Management
- Geochemistry and Geologic Mapping
- Classical Antiquity Studies
- Lipid Membrane Structure and Behavior
- Microbial Community Ecology and Physiology
Jet Propulsion Laboratory
2016-2025
Government of the United States of America
2025
San Francisco State University
2024
University of Michigan
2022
East China Normal University
2022
Amherst College
2021
Boise State University
2021
University of Zurich
2021
Arizona State University
2015-2019
National Aeronautics and Space Administration
2018
The 2017–2027 National Academies' Decadal Survey, Thriving on Our Changing Planet, recommended Surface Biology and Geology (SBG) as a "Designated Targeted Observable" (DO). SBG DO is based the need for capabilities to acquire global, high spatial resolution, visible shortwave infrared (VSWIR; 380–2500 nm; ~30 m pixel resolution) hyperspectral (imaging spectroscopy) multispectral midwave thermal (MWIR: 3–5 μm; TIR: 8–12 ~60 measurements with sub-monthly temporal revisits over terrestrial,...
Abstract We stand at the threshold of a transformative era in Earth observation, marked by space‐borne visible‐to‐shortwave infrared (VSWIR) imaging spectrometers that promise consistent global observations ecosystem function, phenology, and inter‐ intra‐annual change. However, full value repeat spectroscopy, information embedded within different temporal scales, reliability existing algorithms across diverse types vegetation phenophases have remained elusive due to absence suitable...
Recent developments in design and manufacturing have greatly expanded the space for functional part production by enabling control of structural details at small scales to inform behavior whole-structure level. This can be achieved with cellular materials, such as honeycombs, foams lattices. Designing structures materials involves answering an important question: What is optimum unit cell application interest? There currently no classification framework that describes spectrum methodology...
Abstract Pathogenic strains of bacteria are known to cause various infectious diseases and there is a growing demand for molecular probes that can selectively recognize them. Here we report special DNAzyme (catalytic DNA), RFD‐CD1, shows exquisite specificity pathogenic strain Clostridium difficile ( C. ). RFD‐CD1 was derived by an in vitro selection approach where random‐sequence DNA library allowed react with unpurified mixture from this difficle , coupled subtractive strategy eliminate...
Observations of planet Earth from space are a critical resource for science and society. Satellite measurements represent very large investments United States (US) agencies organize their effort to maximize the return on that investment. The US National Research Council conducts survey applications prioritize observations coming decade. most recent prioritized visible shortwave infrared imaging spectrometer multispectral thermal imager meet range needs studying Surface Biology Geology (SBG)....
Los Angeles coastal waters are an ecologically important marine habitat and a famed recreational area for tourists. Constant surveillance is essential to ensure compliance with established health standards address the persistent water quality challenges in region. Remotely sensed datasets increasingly being applied toward improved detection of by augmenting monitoring programs spatially intensive accessible data. This study evaluates potential satellite remote sensing augment traditional...
The ECOsystem Spaceborne Thermal Radiometer Experiment on Space Station (ECOSTRESS) mission was selected as a NASA Earth-Ventures Instrument (EV-I) Class-D the International (ISS) to be launched in April 2018. ECOSTRESS will answer science questions related water use and availability several key biomes of terrestrial biosphere using surface temperature information measured from thermal infrared (TIR) measurement. instrument includes TIR multispectral scanner with five spectral bands between...
Organized monolayer films of a manganese tetraphenylporphyrin have been prepared and used as supported oxidation catalysts. Manganese 5,10,15,20-tetrakis(tetrafluorophenyl-4'-octadecyloxyphosphonic acid) porphyrin (1) has immobilized film by combination Langmuir-Blodgett (LB) self-assembled techniques that use zirconium phosphonate linkages to bind the molecule surface. Analysis FTIR, XPS, UV-vis polarized optical spectroscopy show consist noninteracting molecules effectively anchored...
Since its introduction into Singapore schools in 2005, many are now implementing Lesson Study various forms adapted to their culture, needs and priorities. Why interested Study? How has provided a platform for professional development of teachers? What aspects have changed, light problems constraints the local school context? This paper shares findings survey that participated workshops on find out how these implemented Study. The from could provide teacher educators staff developers leaders...
Abstract The Zn anode in secondary aqueous batteries suffers from dendrite formation and corrosion. In this work, was suppressed by using a simple but new gel electrolyte containing fumed silica an additive. suppression evidenced chronoamperometry ex situ scanning electron microscopy examinations. Pyrazole implemented as the additive electrolyte. It found that presence of 0.2 wt % pyrazole helped minimize both corrosion formation. Zn/LiMn 2 O 4 battery pyrazole‐containing electrolytes...
Aquatic invasive species (AIS) are of concern in North America due to their devastating impacts on ecosystems and economies. The Great Lakes region is particularly vulnerable AIS introduction establishment with at least 184 nonindigenous reported this from a large number taxa including viruses, bacteria, diatoms, protozoa, arthropods, mollusks, fish, plants. Representative these groups were explored, describing the features natural history current efforts prevention control. Specifically,...
Aim Topography, climate and plant water stress influence the spatial patterns of burn severity (damage to soils vegetation associated with wildfires); however, relative importance these predictors remains contested. We hypothesized that high-resolution pre-fire stress, measured using evapotranspiration (ET), evaporative index (ESI) use efficiency (WUE), are strong severity. Location California, USA. Time period 2019–2020. Major taxa studied Forests, chaparral, oaks grasslands. Methods used...
Abstract Wildfires increase runoff and sediment yields that impact downstream ecosystems. While the effects of wildfire on stream water quality are well documented, oceanic responses to remain poorly understood. Therefore, this study investigated 2018 Woolsey Fire using satellite remote sensing in situ data analyses. We examined 2016–2020 turbidity plume (n = 192) 2008–2020 fecal indicator bacteria (FIB, n 15,015) measurements at variable proximity Fire. Shifts coastal were more pronounced...
Study region: Malibu Creek and Ventura watersheds, California, USA.Study focus: Fires significantly alter how watersheds respond to precipitation, leading increased runoff rates heightened sediment loads. We used the Soil Water Assessment Tool (SWAT) analyze discharge Our assessment compared Woolsey Thomas Wildfire episodes on loads generated from burned unburned areas within watersheds. New hydrological insight for Following Wildfire, surged between 2.1 5.2 times, while escalated by 1.9...
Abstract Climate change and human activity are dramatically reshaping how water is distributed on Earth. High quality observations products that bridge the gap between low‐level data actionable information needed to support understanding of current future availability. Two new developments addressing these needs. The SWOT satellite measuring elevation with unprecedented detail, while OPERA project turning into clear, interpretable maps surface extent. Together, represent a major advance in...
Calcium oxalate monohydrate (COM) has been crystallized beneath Langmuir monolayers of four different phosphatidylglycerol lipids, allowing investigation the influence density headgroup packing and monolayer compressibility on heterogeneous precipitation. The COM crystals were nucleated from metastable solutions at phospholipids dipalmitoylphosphatidylglycerol (DPPG), dioleoyphosphatidylglycerol (DOPG), palmitoyloleoylphosphatidylglycerol (POPG), dimyristoylphosphatidylglycerol (DMPG)....
Factors affecting faecal indicator bacteria (FIB) and pathogen survival/persistence in sand remain largely unstudied. This work elucidates how biological physical factors affect die-off beach following sewage spills.Solar disinfection with mechanical mixing was pilot-tested as a procedure after large spill Los Angeles. Effects of solar exposure, mixing, predation and/or competition, season, moisture were tested at bench scale. First-order decay constants for Escherichia coli ranged between...
Abstract This research investigates ecological responses to drought by developing a conceptual framework of vegetation response and investigating how multiple measures can improve regional monitoring. We apply this approach case study recent in Guanacaste, Costa Rica. First, we assess severity with the Standard Precipitation Index ( SPI ) based on 64‐yr precipitation record derived from combination Global Climatology Center data satellite observations Tropical Rainfall Measuring Mission...
Abstract The Surface Biology and Geology (SBG) concept is the first National Aeronautics Space Administration (NASA) Earth mission to develop implement systematic integration of science application needs at architecture study stage. Prior NASA planning activities presumed that measurement would encompasss so did not explicitly evaluate include applications this However, effort presented here identified, documented integrated have been included by considering research only. First, a low...