A Multi-Depth Underwater Spectroradiometer for Validation of Remotely-Sensed Ocean Color and Estimation of Seawater Biogeochemical Properties Project
Published By National Aeronautics and Space Administration
Issued over 9 years ago
Summary
Description
A mobile-deployable, submersible multi-depth, simultaneous, spectro-radiometer system (AquaTree) was designed under phase-I, and key elements were tested in the ocean. Detailed modeling and design analysis were conducted to optimize the sensor system for the extremely wide dynamic range of the radiation field from above the surface down to 10 m below. Under Phase-II a full system will be assembled, including (i) two fiber fed spectrometers with TE cooled cameras to provide long integration time and broad dynamic range, (ii) fiber optics based radiance and irradiance collectors that feed into the spectrometers, (iii) the spectrometers housed in a watertight enclosure with multiple fiber and electrical feedthrough connectors. Control will be from a computer on board a ship located up to 300 m away to avoid shading. The system will be deployed at sea. Simultaneous validation will be conducted using other commercial radiation measuring devices and profilers, and water sampling and analysis; coordination with overhead assets (MERIS, MODIS) will provide additional measurements for complete validation of the AquaTree performance and closure for the radiative transfer modeling. The proposed work is synergistic and complementary to other oceanic research work at OKSI; including the AquaScanUVNIR-micro, an airborne hyperspectral scanner. Both the AquaScan and AquaTree cover the 350-1000 nm spectral range. The AquaScan will be flying in on manned platform and also on NASA UAV in support of ocean color, benthic diversity, biomass, and productivity of seagrass and coral reef biomes research. Another project is exploring a low-cost space access for a HyperScan-micro on board a CubeSat. Hyperspectral measurements over a long horizontal path are also conducted by OKSI to extract littoral aerosols properties.
Published By National Aeronautics and Space Administration
Issued over 9 years ago
Summary
Description
This data set contains calibrated sensor measurements acquired by the Passive and Active L- and S-band (PALS) airborne microwave sensor during the Soil Moisture Experiment 2002 (SMEX02). This data set includes radiometer brightness temperatures (TB) at 1.41 and 2.69 GHz, and radar backscatter coefficients at 1.26 and 3.15 GHz, with multiple polarizations and a 45° incidence angle. The data are geolocated with latitude and longitude information for each data sample. Included are coregistered nadir and boresight infrared temperatures, altitude, and attitude information. Radar and radiometric studies are relevant to SMEX02 because the data indicates wet soil versus dry soil based on differences in emissivity in the microwave spectral region. Data are provided as ASCII files for each flight line and day of the mission. Ten flight lines were flown each day. Flights took place on June 25, 27, and July 1, 2, 5, 6, 7, 8 2002. Data are available via FTP. These data were collected as part of a validation study for the Advanced Microwave Scanning Radiometer - Earth Observing System (AMSR-E). AMSR-E is a mission instrument launched aboard NASA's Aqua Satellite on 04 May 2002. AMSR-E validation studies linked to SMEX are designed to evaluate the accuracy of AMSR-E soil moisture data. Specific validation objectives include assessing and refining soil moisture algorithm performance; verifying soil moisture estimation accuracy; investigating the effects of vegetation, surface temperature, topography, and soil texture on soil moisture accuracy; and determining the regions that are useful for AMSR-E soil moisture measurements.
Published By National Oceanic and Atmospheric Administration, Department of Commerce
Issued over 9 years ago
Summary
Description
The National Oceanic and Atmospheric Administration (NOAA) has the statutory mandate to collect hydrographic data in support of nautical chart compilation for safe navigation and to provide background data for engineers, scientific, and other commercial and industrial activities. Hydrographic survey data primarily consist of water depths, but may also include features (e.g. rocks, wrecks), navigation aids, shoreline identification, and bottom type information. NOAA is responsible for archiving and distributing the source data as described in this metadata record.
Published By US Fish and Wildlife Service, Department of the Interior
Issued over 9 years ago
Summary
Description
Onemetersquare 1 meter x 1 meter benthic substrate at French Frigate Shoals, site P3 23.769 N, 166.261 W, between 48 and 49 meters along a permanent transect.
Published By National Oceanic and Atmospheric Administration, Department of Commerce
Issued over 9 years ago
Summary
Description
The National Oceanic and Atmospheric Administration (NOAA) has the statutory mandate to collect hydrographic data in support of nautical chart compilation for safe navigation and to provide background data for engineers, scientific, and other commercial and industrial activities. Hydrographic survey data primarily consist of water depths, but may also include features (e.g. rocks, wrecks), navigation aids, shoreline identification, and bottom type information. NOAA is responsible for archiving and distributing the source data as described in this metadata record.
Published By Federal Emergency Management Agency, Department of Homeland Security
Issued over 9 years ago
Summary
Description
Digital orthographic imagery datasets contain georeferenced images of the Earth's surface, collected by a sensor in which object displacement has been removed for sensor distortions and orientation, and terrain relief. Digital orthoimages have the geometric characteristics of a map, and image qualities of a photograph. (Source: Circular A-16, p. 16)
Published By National Oceanic and Atmospheric Administration, Department of Commerce
Issued over 9 years ago
Summary
Description
The National Oceanic and Atmospheric Administration (NOAA) has the statutory mandate to collect hydrographic data in support of nautical chart compilation for safe navigation and to provide background data for engineers, scientific, and other commercial and industrial activities. Hydrographic survey data primarily consist of water depths, but may also include features (e.g. rocks, wrecks), navigation aids, shoreline identification, and bottom type information. NOAA is responsible for archiving and distributing the source data as described in this metadata record.
KN194L05: WHOI cruise 194 leg 05 aboard the R/V Knorr from 2008-11-01 - 2008-11-14 (NODC Accession 0080960)
Published By National Oceanic and Atmospheric Administration, Department of Commerce
Issued over 9 years ago
Summary
Description
Post-cruise download of raw data from shipboard computer(s) as furnished by the Woods Hole Oceanographic Institution Shipboard Scientific Support Group and archived by the Marine Biological Laboratory Woods Hole Oceanographic Institution Library for the R/V Knorr - Cruise 194 Leg 05. These data are part of a collection of ocean observation data from Woods Hole Oceanographic Institution ships OCEANUS (call sign WXAQ; built 1975.00; IMO 7603617), KNORR (call sign KCEJ; built 1970.00; IMO 7738618), and the ATLANTIS (call sign KAQP; built 1997.03; IMO 9105798). The data sets are the downloads of the shipboard computers after an individual cruise. As such, they contain basic raw and processed physical and meteorological data from the cruise. A data set may include XBT, CTD, and XCTD profiles, underway thermosalinograph and atmospheric measurements, gravity and magnetic field measurements, current measurements from ADCP, and still photographs from the Alvin submersible (Atlantis cruises only). Other data types (ROV, nutrients measured from bottle samples, etc.) and photographs documenting the cruise may be included.
Published By National Oceanic and Atmospheric Administration, Department of Commerce
Issued over 9 years ago
Summary
Description
To support a long-term NOAA Coral Reef Conservation Program (CRCP) for sustainable management and conservation of coral reef ecosystems, from 20140305 to 20140319, reef fish assessment surveys were conducted, as a part of Rapid Ecological Assessments (REA), during the Pacific Reef Assessment and Monitoring Program (RAMP) Cruise HA1401 in the Pacific Remote Island Areas region by the Coral Reef Ecosystem Division (CRED) at the NOAA Pacific Islands Fisheries Science Center (PIFSC). During the cruise, 45 REA sites were surveyed at Wake in the Pacific Remote Island Areas region. At each REA site, fish biologists entered the water and conducted a fine-scale (~700 m^2) and high degree of taxonomic resolution REA survey to assess and monitor species diversity, size distribution, and abundance of fish in shallow-water hard-bottom (less than 30 m) habitats. Reef fish assessment surveys were focused on cataloging the diversity (species richness), abundance (numeric density) and biomass (fish mass per unit area) of diurnally active reef fish assemblages. The stationary point count (SPC) method was used to quantify reef fish species. Two divers lay out a 30 m transect line, and position themselves at the 7.5 and 22.5 meter marks. The SPC biologist then records estimated size and abundance of all fish within a visually estimated 15-m diameter cylinder centered on the stationary diver (7.5-m radius, total area ~ 177m^2 per cylinder). The diver first spends 5 minutes identifying all fish species in the cylindrical area, then proceeds to count and estimate size (total length) for each in a series of "instantaneous" point counts or sweeps of the cylinder. Fish were identified at the species level, wherever possible. All reef-associated fish, including those in the water column, were surveyed. The survey time for each stationary point count survey was approximately 20 min and generally four stationary point count surveys (two per diver) were conducted at each fish REA site. After completing REA surveys, divers noted the presence, at the survey site, of any unusual fish species not counted during SPC counts, in order to facilitate species lists per location.
Published By National Oceanic and Atmospheric Administration, Department of Commerce
Issued over 9 years ago
Summary
Description
The National Oceanic and Atmospheric Administration (NOAA) has the statutory mandate to collect hydrographic data in support of nautical chart compilation for safe navigation and to provide background data for engineers, scientific, and other commercial and industrial activities. Hydrographic survey data primarily consist of water depths, but may also include features (e.g. rocks, wrecks), navigation aids, shoreline identification, and bottom type information. NOAA is responsible for archiving and distributing the source data as described in this metadata record.
Published By U.S. Geological Survey, Department of the Interior
Issued over 9 years ago
Summary
Description
This part of DS 781 presents data for the acoustic-backscatter map of the Offshore of Tomales Point map area, California. Backscatter data are provided as separate grids depending on mapping system or processing method. The raster data file is included in "BackscatterB_7125_OffshoreTomalesPoint.zip", which is accessible from http://pubs.usgs.gov/ds/781/OffshoreTomalesPoint/data_catalog_OffshoreTomalesPoint.html. The acoustic-backscatter map of the Offshore of Tomales Point map area, California, was generated from backscatter data collected by California State University, Monterey Bay (CSUMB), by Fugro Pelagos, and by the U.S. Geological Survey. Mapping was completed between 2004 and 2010, using a combination of 200-kHz and 400-kHz Reson 7125, and 244-kHz Reson 8101 multibeam echosounders, as well as 234-kHz and 468-kHz SEA SWATHPlus phase-differencing sidescan sonars. These mapping missions combined to collect backscatter data from about the 10-m isobath to beyond the 3-nautical-mile limit of California's State Waters. Within the acoustic-backscatter imagery, brighter tones indicate higher backscatter intensity, and darker tones indicate lower backscatter intensity. The intensity represents a complex interaction between the acoustic pulse and the seafloor, as well as characteristics within the shallow subsurface, providing a general indication of seafloor texture and composition. Backscatter intensity depends on the acoustic source level; the frequency used to image the seafloor; the grazing angle; the composition and character of the seafloor, including grain size, water content, bulk density, and seafloor roughness; and some biological cover. Harder and rougher bottom types such as rocky outcrops or coarse sediment typically return stronger intensities (high backscatter, lighter tones), whereas softer bottom types such as fine sediment return weaker intensities (low backscatter, darker tones). These data are not intended for navigational purposes.
Published By Federal Emergency Management Agency, Department of Homeland Security
Issued over 9 years ago
Summary
Description
Hydrology data include spatial datasets and data tables necessary for documenting the hydrologic procedures for estimating flood discharges for a flood insurance study, which includes the hydrologic data expected by FEMA for new riverline studies. (Source: FEMA Guidelines and Specifications, Appendix N)
WATER DEPTH and Other Data from J. P. KENNEDY JR. from 19710706 to 19710710 (NODC Accession 7101018)
Published By National Oceanic and Atmospheric Administration, Department of Commerce
Issued over 9 years ago
Summary
Published By National Aeronautics and Space Administration
Issued over 9 years ago
Summary
Description
ML2DGM is the EOS Aura Microwave Limb Sounder (MLS) product containing the minor frame diagnostic quantities on a miscellaneous grid. These include items such as tangent pressure, chi-square describing various fits to the measured radiances, number of radiances used in variious retrieval phases, etc. This product contains a second auxillary file which includes cloud-induced radiances inferred for selected spectral channels. The current version is 3.3/3.4. Data coverage is complete from August 8, 2004 to current. Spatial coverage is near-global (-82 deg. to +82 deg. latitude), with each profile spaced 1.5 deg. or ~165 km along the orbit track (roughly 15 orbits per day). Vertical resolution varies between species and typically ranges from 3 - 6 km. Users of the ML2DGM data product should read the EOS MLS Level 2 Version 3.3 and 3.4 Quality Document for more information (http://mls.jpl.nasa.gov/data/v3_data_quality_document.pdf). Users are encouraged to register with the MLS science team at https://mls.jpl.nasa.gov/forms/reguser.php to obtain updates and information about this data product. The data are stored in the version 5 Hierarchical Data Format, or HDF5. Each file contains sets of HDF5 dataset objects (n-dimensional arrays) for each diagnostics measurement. The dataset objects represent data and geolocation fields; included in the file are file attributes and metadata. There are two files per day (MLS-Aura_L2AUX-DGM* and MLS-Aura_L2AUX-Cloud*).
Published By National Oceanic and Atmospheric Administration, Department of Commerce
Issued over 9 years ago
Summary
Published By National Oceanic and Atmospheric Administration, Department of Commerce
Issued over 9 years ago
Summary
Published By National Oceanic and Atmospheric Administration, Department of Commerce
Issued over 9 years ago
Summary
Description
The National Oceanic and Atmospheric Administration (NOAA) has the statutory mandate to collect hydrographic data in support of nautical chart compilation for safe navigation and to provide background data for engineers, scientific, and other commercial and industrial activities. Hydrographic survey data primarily consist of water depths, but may also include features (e.g. rocks, wrecks), navigation aids, shoreline identification, and bottom type information. NOAA is responsible for archiving and distributing the source data as described in this metadata record.
Published By National Aeronautics and Space Administration
Issued over 9 years ago
Summary
Description
Advanced Materials Technology, Inc (AMTI) responds to the NASA solicitation X10 "Cryogenic Propellant Storage and Transfer" under subtopic X.01 "Cryogenic Fluid Management Technologies". NASA is seeking for technologies in advanced cryogenic fluid storage and transfer to reduce launch operation costs by providing higher efficiency, lower maintenance and longer life while improving safety and minimizing consumable losses. To address the NASA needs, we propose to develop novel, sprayable, fire resistant, composite coating for insulation of advanced cryogenic fluid storage systems. The novel insulations will offer affordable cost, high strength and flexibility, high thermal stability, excellent durability, and easy processability through spraying technique, which will result in improved efficiency and reliability of the cryogenic systems. Once the feasibility of fabrication of lightweight cryogenic insulating materials by the proposed technology is demonstrated in Phase I, we shall scale-up this technology in a Phase II program to meet the NASA's requirements.
Published By National Aeronautics and Space Administration
Issued over 9 years ago
Summary
Description
CERES ISCCP D2 like Monhtly-3Hourly and Monthly Gridded Cloud Averages (ISCCP-D2like-Nit) in HDF format.
Published By US Fish and Wildlife Service, Department of the Interior
Issued over 9 years ago
Summary
Description
This narrative report for Valentine NWR outlines Refuge accomplishments for February of 1938. The report begins by summarizing the weather conditions and water conditions during this period. Wildlife including migratory birds, upland game birds, furbearers, rodents, and fish is also covered. The Refuge development and maintenance section discusses physical developments, plantings, and collections and receipts. Photographs are attached.
Published By Federal Emergency Management Agency, Department of Homeland Security
Issued over 9 years ago
Summary
Description
The Floodplain Mapping/Redelineation study deliverables depict and quantify the flood risks for the study area. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual-chance flood event and areas of minimal flood risk. The Floodplain Mapping/Redelineation flood risk boundaries are derived from the engineering information Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (FIRMs), flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. This FISs and FIRMs are published by the Federal Emergency Management Agency (FEMA).
Published By National Aeronautics and Space Administration
Issued over 9 years ago
Summary
Description
The Coastal Zone Color Scanner Experiment (CZCS) was the first instrument devoted to the measurement of ocean color and flown on a spacecraft. Although other instruments flown on other spacecraft had sensed ocean color, their spectral bands, spatial resolution and dynamic range were optimized for land or meteorological use and had limited sensitivity in this area, whereas in CZCS, every parameter was optimized for use over water to the exclusion of any other type of sensing. CZCS had six spectral bands, four of which were used primarily for ocean color. These were of a 20 nanometer bandwidth centered at 443, 520, 550, and 670 nm. Band 5 had a 100 nm bandwidth centered at 750 nm and a dynamic range more suited to land. Band 6 operated in the 10.5 to 12.5 micrometer region and sensed emitted thermal radiance for derivation of equivalent black body temperature. (This thermal band failed within the first year of the mission, and so was not used in the global processing effort.) Bands 1-4 were preset to view water only and saturated when the IFOV was over most types of land surfaces, or clouds.
Published By Federal Laboratory Consortium
Issued over 9 years ago
Summary
Published By National Oceanic and Atmospheric Administration, Department of Commerce
Issued over 9 years ago
Summary
Description
NOAA CoastWatch provides SST data from NASA's Aqua Spacecraft. Measurements are gathered by the Moderate Resolution Imaging Spectroradiometer (MODIS) carried aboard the spacecraft. Currently, only daytime imagery is supported.
Published By Federal Emergency Management Agency, Department of Homeland Security
Issued over 9 years ago
Summary
Description
Terrain data, as defined in FEMA Guidelines and Specifications, Appendix M: Data Capture Standards, describes the digital topographic data that was used to create the elevation data representing the terrain environment of a watershed and/or floodplain. Terrain data requirements allow for flexibility in the types of information provided as sources used to produce final terrain deliverables. Once this type of data is provided, FEMA will be able to account for the origins of the flood study elevation data. (Source: FEMA Guidelines and Specifications, Appendix N, Section N.1.2).