HelioWebSigma Space Corporation, Maryland
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I[Sigma Space Corporation, Maryland]
PI["Parent Institutions (0)"]
CI["Child Institutions (0)"]
AW["Affiliated Works (226)"]
CA["Linked Collaborating Authors (21)"]
I== skos:broader ==>PI
CI== skos:broader ==>I
AW== affil ==>I
AW== author ==>CA
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Affiliated Works
sorted by decreasing year, and then by display-name
- A Ground-Based Profiling Differential Absorption LIDAR System for Measuring Carbon Dioxide in the Planetary Boundary Layer
- Geoscience Laser Altimeter System (GLAS) on the ICESat Mission: Initial Science Measurement Performance
- Laser Pointing Determination System for the Geoscience Laser Altimeter
- A CO<SUB>2</SUB> Differential Absorption LIDAR System
- Airborne 3D Imaging Lidar for Contiguous Decimeter Resolution Terrain Mapping and Shallow Water Bathymetry
- Mars Trace Gas Detection with a Remote Sensing LIDAR
- Using Lidar-derived 3-D Vegetation Structure Maps to Assist in the Search for the Ivory- billed Woodpecker
- Eddies, Convection, and Maintenance of the Saturn General Circulation: Results from Cassini Imaging
- Laser Sounder for Measuring Atmospheric CO2 Concentrations: Demonstrations and Analysis
- Comparison of the CO2 column averaged mixing ratio from a Laser Sounder and LICOR measurements from the Boulder Atmospheric Observatory.
- Laser Sounder Approach for Measuring Atmospheric CO2 Concentrations for the ASCENDS Mission
- Range Resolved Measurements of CO2 in the Planetary Boundary Layer
- Aerosol Properties Observed on the Mesoscale and MODIS Aerosol Optical Depth Comparisons during the 2008 Pre-monsoon TIGERZ IOP in Kanpur, India
- An MHD 3-D solution to the evolution of a CME observed by the STEREO mission on May 2007
- Cloud optical depths from the new AERONET “cloud mode” observations
- Empirical Correction of Residual Error in the ICESat-1 Altimetry Time Series at Lake Vostok
- Inflight Performance of an Airborne Photon Counting 3D Imaging Lidar (Invited)
- Initial Results from the Lunar Reconnaissance Orbiter Laser Ranging Investigation
- Maritime Aerosol Network as a component of AERONET - a satellite validation tool over the oceans
- Precise and Accurate High-Altitude Waveform Lidar Mapping of Greenland Land and Arctic Sea Ice in Support of Operation IceBridge
- Pulsed Airborne Lidar measurements of Atmospheric CO2 Column Absorption and Line Shapes from 3-13 km altitudes
- Regional and Global Time-Variable Gravity Recovery from GRACE
- Remote Sensing of Ecosystem Light Use Efficiency Using MODIS
- Retrievals of column CO2 mixing ratio from airborne pulsed lidar measurements
- Signal to Noise Ratio Analysis of the Data from the Pulsed Airborne CO2 Lidar Measurements
- Terra in K-16 formal education settings
- The Slope Imaging Multi-polarization Photon-counting Lidar: an Advanced Technology Airborne Laser Altimeter
- Atmospheric Airborne Pressure Measurements using the Oxygen A Band for the ASCENDS Mission
- Challenges of Presenting Context and Interpretation of Global Datasets on Spherical Displays
- Characterizing Ice Sheet Surface Topography and Structure Using High-Altitude Waveform Airborne Laser Altimetry
- Cross Archive Search, Access and Distribution Enabling Modis and Beyond
- Data Analysis for the Recent Flight Campaigns towards Future NASA Space Mission ASCENDS
- ICESat-2 Simulations and Analysis using Sigma Space MPL Measurements over Greenland
- ICESat-2 simulated data from airborne altimetery
- Ice loss in Jakobshavn Isbrae, Greenland, measured by NASA's Airborne Topographic Mapper and ICESat
- Implementing Land and Atmosphere Near Real-Time Capability for EOS (LANCE)
- Laser Ranging Experiment on Lunar Reconnaissance Orbiter: Clocks and Ranges
- Observation of global, seasonal cycle of regional-scale chlorophyll fluorescence from space using GOSAT
- Precision Orbit Determination for the Lunar Reconnaissance Orbiter: orbit quality and gravity field estimation
- Signal and Noise Analysis of the Recent Airborne CO2 and O2 Measurements with an Integrated Path Differential Absorption Lidar
- Terra and Aqua MODIS Instrument Status
- The Communication Strategy of NASA's Earth Observatory
- Tracking Changes in Northwest and Southeast Greenland with NASA's Operation IceBridge and the Airborne Topographic Mapper
- Visualization Case Study: Eyjafjallajökull Ash (Invited)
- An Integrated Approach for Accessing Multiple Datasets through LANCE
- Atmospheric Airborne Pressure Measurements using the Oxygen A Band for the ASCENDS Mission
- Cloud droplet size retrievals from AERONET cloud mode observations
- Comparison of Aerosol Optical Depth Measurements from GOES-13, Aircraft, AERONET and the Surface During DISCOVER-AQ in July 2011
- DRAGONs DISCOVER Air Quality over Baltimore
- Dominant Aerosol Particle Type/Mixture Identification at Worldwide Locations Using the Aerosol Robotic Network (AERONET)
- Field deployment and initial results from micro-pulse lidar systems during NASA's DISCOVER AQ campaign
- First assessments of ICESat-2 performance using aircraft data
- Improvements in space-based terrestrial chlorophyll fluorescence retrievals
- Interactive Browsing, Filtering, Visualization, and Retrieval from Large Collections of Near Real-Time Satellite Observations
- Is it possible to detect marine biogenic aerosols with existing or future satellite platforms?
- MABEL photon-counting altimetry data for ICESat-2 simulations
- MODIS Near real-time (NRT) data for fire applications
- Mapping Land, Vegetation, and Ice with Wide-swath, Full-waveform Laser Altimetry from High-altitude UAV Aircraft
- Measurements of aerosol distributions and properties from Airborne High Spectral Resolution Lidar and DRAGON during the DISCOVER-AQ California Experiment (Invited)
- Methods to Enhance Climate Change Imagery for Communication
- Moving toward a Biomass Map of Boreal Eurasia based on ICESat GLAS, ASTER GDEM, and field measurements: Amount, Spatial distribution, and Statistical Uncertainties
- Ongoing Changes in Small Ice Caps in Greenland and Arctic Canada As Measured by NASA's Operation IceBridge and the Airborne Topographic Mapper
- Partial cloud fraction effects on aerosol retrievals using polarized reflectance observations
- Retrievals of Column CO2 Densities from Pulsed Airborne Lidar Measurements
- Ship-borne measurements of aerosol optical depth over remote oceans and its dependence on wind speed
- Single-Photon LIDAR for Vegetation Analysis
- Twenty Years of Changes in Greenland from Aircraft Laser Altimetry Collected by Ice Bridge and the Parca Program
- Using satellite aerosol retrievals to monitor surface particulate air quality
- What drives the Amazon green up phenomenon?
- 40 Years Young: Social Media for the World's Longest-Running Earth-Observation Satellite Program
- A Pre-launch Analysis of NASA's SMAP Mission Data
- Airborne ICESat-2 simulator (MABEL) results from Greenland
- Application of Single Photon Lidar for Retrieval of Ecosystem Structure
- Atmospheric Airborne Pressure Measurements Using the Oxygen A Band for the ASCENDS Mission
- Detecting policy-relevant greenhouse gas emission changes with atmospheric observations
- Filling Gaps in the Spatial Coverage of LOLA Terrain Models
- Global Patterns of Sea Level Change from the SeaRISE Ice Sheet Model Simulations
- High-Altitude Laser Altimetry from the Global Hawk UAV for Regional Mapping of Surface Topography
- Interactively Browsing NASA's EOS Imagery in Full Resolution
- LANCE Usage and User Analysis: Creating a Better System that Meets User Needs
- LANCE in ECHO - Merging Science and Near Real-Time Data Search and Order
- Leaf Level Chlorophyll Fluorescence Emission Spectra: Narrow Band versus Full 650-800 nm Retrievals
- Linking solar induced fluorescence and the photochemical reflectance index to carbon assimilation in a cornfield
- Mercury Polar Volatiles: Complex Hydrocarbons vs Water Ice
- Monitoring Fires from Space and Getting Data in to the hands of Users: An Example from NASA's Fire Information for Resource Management System (FIRMS)
- Monitoring Fires from Space: a case study in transitioning from research to applications
- Progressive Thinning of Greenland's Greater Jakobshavn Basin from Operation IceBridge Laser Altimetry
- Space Weather Forecasting at NASA GSFC Space Weather Research Center
- State-of-the-art satellite vegetation fluorescence retrievals and comparisons with reflectance-based bio-spectral indicators
- The seasonal cycle of terrestrial fluorescence and its relationship to global primary productivity (GPP)
- Twenty Years of Changes in Greenland from Aircraft Laser Altimetry Collected by Ice Bridge and the Parca Program
- Understanding Suomi NPP VIIRS geometric performance
- Using the Aerosol Single Scattering Albedo and Angstrom Exponent from AERONET to Determine Aerosol Origins and Mixing States over the Indo-Gangetic Plain
- Web Based Semi-automatic Scientific Validation of Models of the Corona and Inner Heliosphere
- Aerosol Optical Depth Measurements in the Southern Ocean Within the Framework of Maritime Aerosol Network
- Analysis of Pulsed Lidar Measurements of Atmospheric CO2 Column Absorption in the ASCENDS 2011 and 2013 Airborne Campaigns
- Application of AERONET Single Scattering Albedo and Absorption Angstrom Exponent to Classify Dominant Aerosol Types during DRAGON Campaigns
- Atmospheric Backscatter Profiles at 765nm and 1572nm from Pulsed Lidar Measurements of CO2 and O2 Column Absorption from the 2013 ASCENDS Flight Campaign
- Demonstration of centimeter-level precision, swath mapping, full-waveform laser altimetry from high altitude on the Global Hawk UAV for future application to cryospheric remote sensing
- EPO Program and Product Evaluation Throughout the Development Lifecycle
- Expanding Access and Usage of NASA Near Real-Time Imagery and Data
- Field results from 3 campaigns to validate the performance of the Miniaturized Laser Heterodyne Radiometer (mini-LHR) for measuring carbon dioxide and methane in the atmospheric column
- Greenland Ice Sheet Mass Loss and Outlet Glacier Dynamics from Laser Altimetry Record (1993-2013) (Invited)
- ICESat-2 / ATLAS Flight Science Receiver Algorithms
- Improvements to the MODIS Land Products in Collection Version 6
- Informing future NRT satellite distribution capabilities: Lessons learned from NASA's Land Atmosphere NRT capability for EOS (LANCE)
- LVFS: A Scalable Petabye/Exabyte Data Storage System
- Land Long Term Climate Data Records from AVHRR, MODIS and VIIRS
- Laser Ranging to the Lunar Reconnaissance Orbiter: improved timing and orbits
- MABEL Photon-Counting Laser Altimetry Data for ICESat-2 Simulations and Development
- Measurements and modeling of CH4 and CO2 in the Boston Metro area and Northeastern Megalopolis
- Measurements of aerosol distributions and properties from Airborne High Spectral Resolution Lidar and DRAGON during the DISCOVER-AQ California Experiment (Invited)
- Optical Sensing of Ecosystem Carbon Fluxes Combining Spectral Reflectance Indices with Solar Induced Fluorescence
- PoSSUM: Polar Suborbital Science in the Upper Mesosphere
- Potential for Using Satellite Lidar for Seasonal Snow Depth Estimation
- Precise Aircraft Guidance Techniques for NASA's Operation IceBridge
- Project PoSSUM: Polar Suborbital Science in the Upper Mesosphere
- Providing accurate near real-time fire alerts for Protected Areas through NASA FIRMS: Opportunities and Challenges
- Pulsed airborne lidar measurements of atmospheric optical depth using the Oxygen A-band at 765 nm
- Retrieval of Vertical Structure of Atmospheric CO2 Concentration from Airborne Lidar Measurements during the 2011 and 2013 ASCENDS Science Campaigns
- Searching for Lunar Tidal Deformations with LRO/LOLA
- See It First: Interactively and Visually Discovering Interesting Satellite Data with NASA Worldview
- Sensors, Circuits, and Satellites - NGSS at it's best: the integration of three dimensions with NASA science
- Status of Terra and Aqua MODIS Instrument Operation and Calibration
- Taking stock of circumboreal forest carbon by combining inventory plot measurements with airborne and spaceborne LiDAR
- Using sky radiances measured by ground based AERONET Sun-Radiometers for cirrus cloud detection
- Vertically-resolved retrievals of the atmospheric CO2 concentration using multi-wavelength pulsed lidar measurements from the ASCENDS airborne campaigns
- Web Based Semi-automatic Scientific Validation of Models of the Corona and Inner Heliosphere
- 15 Years of Terra, 14 Years of Application Usage
- AERONET Version 3 processing
- Atmospheric Airborne Pressure Measurements using the Oxygen A Band for the ASCENDS Mission
- Early warning of active fire hotspots through NASA FIRMS fire information system
- Encountering Science in the World: New Partnerships for Science Interpretation
- Enhancements to NASA's Land Atmosphere Near Real-Time Capability for Eos (LANCE)
- Finding the Unusual, Unexpected, Expected, or Otherwise Interesting Patterns in Large Earth Science Datasets
- From Soup to Nuts: How Terra has enabled the growth of NASA Earth science communication
- Gibs: A Rich Visual Interface to NASA's Earth Science Data Holdings
- Improved Instrumentation for the Detection of Atmospheric CO<SUB>2</SUB> Concentration using an Airborne IPDA LIDAR for 2014 NASA ASCENDS Science Campaign
- In-orbit Calibration of the Lunar Orbiter Laser Altimeter Via Two-Way Laser Ranging with an Earth Station
- Informing urban carbon emissions with atmospheric observations: motivation, methods, and reducing uncertainties.
- Lunar Phase Function in the Near-Infrared from the Lunar Orbiter Laser Altimeter
- MODIS-VIIRS Continuity: The Impact of Spatial Sampling on Global Land (Level-2) Products
- Mars Orbiter Laser Altimeter Radiometry: Phase Functions and the Optical Depth of Nocturnal Water Ice Clouds
- NASA and Earth Science Week: a Model for Engaging Scientists and Engineers in Education and Outreach
- NASA's Open Source Software for Serving and Viewing Global Imagery
- No Pixel Left Behind - Peeling Away NASA's Satellite Swaths
- Optical Sensing of Ecosystem Carbon Fluxes Combining Spectral Reflectance Indices with Solar Induced Fluorescence
- Quantifying the climatological cloud-free shortwave direct radiative forcing of mineral dust aerosol over the Red Sea
- Remote Sensing of Chlorophyll Fluorescence by the Airborne Plant Fluorescence Sensor (APFS)
- Remotely Measured Terrestrial Chlorophyll Fluorescence Using Airborne G-LiHT and APFS Sensors
- Retrieval of Atmospheric CO<SUB>2</SUB> Concentration above Clouds and Cloud Top Pressure from Airborne Lidar Measurements during ASCENDS Science Campaigns
- Retrievals of Chlorophyll Fapar for Improved Crop Gpp Modeling
- Surface Elevation Measurements of Greenland and Antarctica Using NASA's Land, Vegetation and Ice Sensor (LVIS)
- The Multi-View Lightweight Virtual File System: Simplifying Collaboration with In-line Data Format Conversion and Big Data Volume Streaming
- Time-transfer experiments between satellite laser ranging ground stations via one-way laser ranging to the Lunar Reconnaissance Orbiter
- Validation of MODIS Terra and Aqua Ice Surface Temperatures at Summit, Greenland
- A new map of circa 2010 global urban extent from Landsat data
- Airborne Lidar Measurements of Atmospheric Column CO<SUB>2</SUB> Concentration to Cloud Tops
- Arctic and Antarctic Topography Measurements Using LVIS
- Assessment of planetary boundary layer and residual layer heights in the Northeastern U.S. using Lidar, a network of surface observations, and the WRF-STILT model
- Calibration of Mercury Laser Altimeter Data Using Digital Elevation Models Derived from Stereo Image Pairs
- Evaluating WRF Simulations of Urban Boundary Layer Processes during DISCOVER-AQ
- Geodetic Imaging Lidar: Applications for high-accuracy, large area mapping with NASA's upcoming high-altitude waveform-based airborne laser altimetry Facility
- Initial Results from an Atmospheric Validation of Urban Greenhouse Gas Budget Estimates for the US Northeast Corridor
- Large Scale Mapping of Vegetation Structure and Terrain Surface using Single Photon Lidar (SPL)
- Lessons Learned from a Decade of Serving Data to Students and the Public
- Measurements of Solar Induced Chlorophyll Fluorescence at 685 nm by Airborne Plant Fluorescence Sensor (APFS)
- Minimizing Intra-Campaign Biases in Airborne Laser Altimetry By Thorough Calibration of Lidar System Parameters
- NASA's Land, Atmosphere Near real-time Capability for EOS (LANCE): Changing patterns in the use of NRT satellite imagery
- Next Generation UAV Based Spectral Systems for Environmental Monitoring: project developments, preliminary outcome and findings
- Planetary dynamics from laser altimetry: Spin and tidal deformation of the Moon and Mercury
- Progress in Developing an Integrated Global Greenhouse Gas Information System (IG<SUP>3</SUP>IS)
- Pulsed Lidar Measurements of Atmospheric CO2 Column Concentration in the ASCENDS 2014 Airborne Campaign
- Remote Sensing of Urban Mixed Layer Structure in Los Angeles, with Applications to Greenhouse Gas Emissions Quantification
- Spatiotemporal Variability in Observations of Urban Mixed-Layer Heights from Surface-based Lidar Systems during DISCOVER-AQ 2011
- Test site characterization and model development for sensor intercomparison: Algodones Dunes
- Utilizing a Tower Based System for Optical Sensing of Ecosystem Carbon Fluxes
- A NASA Community of Practice for Scientists and Educators Working with American Indians and Alaskan Natives
- A-Train Education Activities: Partnerships to Engage Citizens with Atmospheric Science
- Advances in Pulsed Lidar Measurements of CO2 Column Concentrations from Aircraft and for Space
- Analysis of the sources and dynamic processes leading to the increase of atmospheric CO<SUB>2</SUB>, black carbon and other trace species during recent urban pollution events in the Paris megacity region : a synergy of resources provided by the IPSL OCAPI platform.
- Enhancements to NASA's Land Atmosphere Near real-time Capability for EOS (LANCE)
- Facilitating Ice Sheet Model Analysis with the Cryosphere Model Comparison Tool (CmCt)
- Global Land Product Validation Protocols: An Initiative of the CEOS Working Group on Calibration and Validation to Evaluate Satellite-derived Essential Climate Variables
- Implementation of high precision optical and radiometric LRO tracking data in the orbit determination to supplement the baseline S-band tracking
- Lunar Orbiter Laser Altimeter (LOLA) Data: Lunar Topography and Surface Properties After 7 Years
- Mineralogy and Iron Content of the Lunar Polar Regions Using the Kaguya Spectral Profiler and the Lunar Orbiter Laser Altimeter
- Observations of Mixing Layer Heights from the Micropulse Lidar Network and Potential Implications for Regional and Global Models
- Optical Sensing of Ecosystem Carbon Fluxes from Tower-mounted Spectrometers
- Planetary Dynamics From Laser Altimetry: Spin and Tidal Deformation of the Moon and Mercury
- Progress toward an Integrated Global Greenhouse Gas Information System (IG<SUP>3</SUP>IS)
- Towards a Novel Integrated Approach for Estimating Greenhouse Gas Emissions in Support of International Agreements
- Assessing biomass accumulation in second growth forests of Puerto Rico using airborne lidar
- Atmospheric CO<SUB>2</SUB> Concentration Measurements with Clouds from an Airborne Lidar
- Expanding NASA's Land, Atmosphere Near real-time Capability for EOS
- MARLI: MARs LIdar for global climate measurements from orbit
- Monitoring Lakes in Africa with Altimetry and GRACE
- Precise positioning with sparse radio tracking: How LRO-LOLA and GRAIL enable future lunar exploration
- Pulsed Lidar Measurements of CO2 Column Concentrations in the 2017 ASCENDS Airborne Campaign and Comparison with In-Situ Measurements
- Searching for Lunar Horizon Glow With the Lunar Orbiter Laser Altimeter (LOLA)
- Two-way laser ranging and time transfer experiments between LOLA and an Earth-based satellite laser ranging station
- Uses of Single Photon Lidar (SPL) in the Monitoring Reporting and Verification of afforestation and carbon offset projects
- A Cubesat-Scale Instrument for Observing Stratospheric Aerosols
- A Preliminary Assessment of the ATL03 Geolocated Photon Cloud Product from ICESat-2
- High Quality, High Quantity Laser Ranging Data for the 21<SUP>st</SUP> Century: NASA's Next Generation Satellite Laser Ranging Network
- ICESat-2 Photon Classification: Finding Signal Photons in the ATL03 Geolocated Photon Data Product
- Improvements on NASA's MODIS Evapotranspiration (MOD16) and GPP/NPP (MOD17) Operational Global Data Sets Using Gap-filled Climatological FPAR/LAI
- MARLI: Mars Lidar for Global Wind Measurements from Orbit
- Maritime Aerosol Network precipitable water vapor measurement: satellite and global reanalysis evaluations under clear sky conditions.
- NASA's Land, Atmosphere Near real-time Capability for EOS (LANCE): Delivering Data and Imagery to Meet the Needs of Near Real-Time Applications.
- New Capabilities, Products, and Usage of NASA Earth Imagery for Near Real Time Applications
- On-orbit radiometric calibration status and performance for the SNPP and NOAA-20 (JPSS-1) VIIRS RSBs and TEBs
- Pulsed Multiwavelength Lidar Measurements of CO<SUB>2</SUB> Column Concentrations in the 2017 ASCENDS Airborne Campaign
- Real-time GNSS data and product streams at NASA GSFC CDDIS
- Software Best Practices at Crustal Dynamics Data Information System (CDDIS)
- The Next Generation of NASA Rapid Response: Worldview Snapshots
- An Overview of ICESat-2 Data and Reference Products for General Data Users
- Hurricane-related forest degradation and dieback across the Caribbean
- MODIS Atmosphere Data from the Past to the Future
- On-orbit performance analyses of the ATL03 geolocated photon cloud product from ICESat-2
- Atmosphere-based US emission estimates of sulfur hexafluoride
- Continuity of Terrestrial Evapotranspiration and Primary Production Data Records from MODIS to VIIRS for Earth Ecology Monitoring
- NASAs New MODIS/VIIRS Global Water Reservoir Product Suite
- Continuity of a Global, Satellite-based Terrestrial Primary Productivity Dataset in the VIIRS Era Achieved with Model-Data Fusion
- Developing and validating the SNPP/JPSS VIIRS Global Water Reservoir Product
- U.S. non-CO2 greenhouse gas emissions for 2007 - 2020 derived from atmospheric observations