Published By National Aeronautics and Space Administration
Issued over 9 years ago
Summary
Description
MODIS (or Moderate Resolution Imaging Spectroradiometer) is a key instrument aboard the Terra (EOS AM) and Aqua (EOS PM) satellites. Terra's orbit around the Earth is timed so that it passes from north to south across the equator in the morning, while Aqua passes south to north over the equator in the afternoon. Terra MODIS and Aqua MODIS are viewing the entire Earth's surface every 1 to 2 days, acquiring data in 36 spectral bands, or groups of wavelengths (see MODIS Technical Specifications). These data will improve our understanding of global dynamics and processes occurring on the land, in the oceans, and in the lower atmosphere. MODIS is playing a vital role in the development of validated, global, interactive Earth system models able to predict global change accurately enough to assist policy makers in making sound decisions concerning the protection of our environment.
Published By National Aeronautics and Space Administration
Issued over 9 years ago
Summary
Description
The GOZCARDS Source Data for Ozone Monthly Zonal Averages on a Geodetic Latitude and Pressure Grid product (GozSmlpO3) contains zonal means and related information (standard deviation, minimum/maximum value, etc.), calculated from original (‘Level 2’ type) satellite instruments and products. The source O3 data are from the following satellite instruments: SAGE I (v5.9_rev; 1979-1981), SAGE II (v6.2; 1984-2005), HALOE (v19; 1991-2005), UARS MLS (v5; 1991-1997), ACE-FTS (v2.2; 2004-onward), Aura MLS (v2.2; 2004 onward) + others as validation (e.g., SAGE III, v4.0; 2002-2005). The vertical pressure range for O3 is from 147 to 0.5 hPa. The source data are used to create a merged product contained in a separate data product with the short name GozMmlpO3. The GozSmlpO3 source data are written using the new netCDF4 enhanced model using CF-1 metadata attributes. The data variables are organized into a Group hierarchy structure. Global Attributes describing the data file (e.g. data start/end time, spatial extent, etc.) are located at the file/root level. Users can use netCDF enabled tools to view the data. Since netCDF4 is based on the HDF5 format, HDF5 readers will also work with these data files. Parameters contained in the data files include the following: Variable Name |Description |Units /SAGE-I/average |Ozone Zonal Average from SAGE-I |(mol/mol) /SAGE-II/average |Ozone Zonal Average from SAGE-II |(mol/mol) /HALOE/average |Ozone Zonal Average from HALOE |(mol/mol) /UARS MLS/average|Ozone Zonal Average from UARS MLS |(mol/mol) /ACE-FTS/average |Ozone Zonal Average from ACE-FTS |(mol/mol) /Aura MLS/average|Ozone Zonal Average from Aura MLS |(mol/mol) End of parameter informationGOZCARDS (Global OZone Chemistry And Related trace gas Data records for the Stratosphere) refers to a commonly-formatted Earth system data record (ESDR) for stratospheric composition, of high relevance to the issue of ozone decline and recovery. High-quality long-term ozone and related trace gas data records are needed to (a) evaluate and understand composition changes in the atmosphere and (b) constrain model representations of atmospheric dynamics and photochemistry.
Published By National Aeronautics and Space Administration
Issued over 9 years ago
Summary
Description
MODIS (or Moderate Resolution Imaging Spectroradiometer) is a key instrument aboard the Terra (EOS AM) and Aqua (EOS PM) satellites. Terra's orbit around the Earth is timed so that it passes from north to south across the equator in the morning, while Aqua passes south to north over the equator in the afternoon. Terra MODIS and Aqua MODIS are viewing the entire Earth's surface every 1 to 2 days, acquiring data in 36 spectral bands, or groups of wavelengths (see MODIS Technical Specifications). These data will improve our understanding of global dynamics and processes occurring on the land, in the oceans, and in the lower atmosphere. MODIS is playing a vital role in the development of validated, global, interactive Earth system models able to predict global change accurately enough to assist policy makers in making sound decisions concerning the protection of our environment.
Published By US Fish and Wildlife Service, Department of the Interior
Issued over 9 years ago
Summary
Description
This dataset contains the results of a winter waterfowl study conducted in December of 1993 in Tennessee.
Published By National Aeronautics and Space Administration
Issued over 9 years ago
Summary
Description
The Atmospheric Infrared Sounder (AIRS) is a facility instrument aboard the second Earth Observing System (EOS) polar-orbiting platform, EOS Aqua. In combination with the Advanced Microwave Sounding Unit (AMSU) and the Humidity Sounder for Brazil (HSB), AIRS constitutes an innovative atmospheric sounding group of visible, infrared, and microwave sensors. AIRS data will be generated continuously. Global coverage will be obtained twice daily (day and night) on a 1:30pm sun synchronous orbit from a 705-km altitude. Cloud-Cleared Radiances contain calibrated, geolocated channel-by-channel AIRS infrared radiances (milliWatts/m2/cm-1/steradian) that would have been observed within each Advanced Microwave Sounding Unit (AMSU) footprint if there were no clouds in the FOV and produced along with the AIRS Standard Product, as they are the radiances used to retrieve the Standard Product. Nevertheless, they are an order of magnitude larger in data volume than the remainder of the Standard Products and, many Standard Product users are expected to have little interest in the Cloud Cleared Radiance. For these reasons they are a separate output file, but like the Standard Product, are generated at all locations. (The Shortname for this product is AIRI2CCF_NRT).
Published By National Aeronautics and Space Administration
Issued over 9 years ago
Summary
Description
The average operating altitude for TRMM was changed from 350 to 403 km during the period of August 7-24, 2001. This orbit boost maneuver extended the mission life significantly. All post-boost data products had been released by the TRMM Science Project, as of early December 2001. All TRMM data products (post-boost and pre-boost) are available via the TRMM data search-and-order system at http://mirador.gsfc.nasa.gov/cgi-bin/mirador/presentNavigation.pl?tree=project&project=TRMM . The time period before August 7, 2001 is referred to as pre-boost, and the time period after August 24, 2001 is referred to as post-boost. [Summary provided by the GES-DISC DAAC]
Published By National Aeronautics and Space Administration
Issued over 9 years ago
Summary
Description
The Tropical Composition, Cloud and Climate Coupling (TC4) mission TC4 field experiment was completed during July and August 2007 based out of San Jose, Costa Rica. The Advanced Microwave Precipitation Radiometer (AMPR) instrument played a key role in the experiment. The AMPR remotely senses passive microwave signatures of geophysical parameters from an airborne platform. The instrument is a low noise system which can provide multi-frequency microwave imagery with high spatial and temporal resolution. AMPR data were collected at a combination of frequencies (10.7, 19.35, 37.1, and 85.5 GHz) unique to current NASA aircraft instrumentation. These frequencies are well suited to the study of rain cloud systems, but are also useful to studies of various ocean and land surface processes.
Published By National Aeronautics and Space Administration
Issued over 9 years ago
Summary
Description
The reprocessed Aura OMI Version 003 Level 2 Cloud Data Product OMCLDRR is made available (in April 2012) to the public from the NASA Goddard Earth Sciences Data and Information Services Center (GES DISC). http://disc.gsfc.nasa.gov/Aura/OMI/omcldrr_v003.shtml ) Aura OMI provides two Level-2 Cloud products (OMCLDRR and OMCLDO2) at pixel resolution (13 x 24 km at nadir) that are based on two different algorithms, the Rotational Raman Scattering method and the O2-O2 absorption method. This level-2 global cloud product (OMCLDRR) provides effective cloud pressure and effective cloud fraction that is based on the least square fitting of the Ring spectrum (filling-in of Fraunhofer lines in the range 392 to 398 nm due to rotational Raman scattering). This product also contains many ancillary and derived parameters, terrain and geolocation information, solar and satellite viewing angles, and quality flags. The shortname for this Level-2 OMI Cloud Pressure and Fraction product is OMCLDRR and the algorithm lead for this product is NASA OMI scientist Dr. Joanna Joinner. (The shortname for this Level-2 OMI cloud pressure and fraction product is OMCLDRR) OMCLDRR files are stored in EOS Hierarchical Data Format (HDF-EOS5). Each file contains data from the day lit portion of an orbit (53 minutes). There are approximately 14 orbits per day. The maximum file size for the OMCLDRR data product is about 9 Mbytes. A short OMCLDRR Readme Document that includes brief algorithm description and data quality is also provided by the OMCLDRR Algorithm lead. Data Category Parameters: The OMCLDRR data file contains one swath which consists of two groups: Data fields: Two Effective Cloud Fraction and two Cloud Top Pressures that are based on two different clear and cloudy scene reflectivity criteria, Chlorophyll Amount, Effective Reflectivity (394.1 micron), UV Aerosol Index (based on 360 and 388 nm), and many Auxiliary Algorithm Parameter and Quality Flags. Geolocation Fields: Latitude, Longitude, Time, Solar Zenith Angle, Viewing Zenith Angle, Relative Azimuth Angle, Terrain Height, and Ground Pixel Quality Flags.
Published By National Aeronautics and Space Administration
Issued over 9 years ago
Summary
Description
MODIS (or Moderate Resolution Imaging Spectroradiometer) is a key instrument aboard the Terra (EOS AM) and Aqua (EOS PM) satellites. Terra's orbit around the Earth is timed so that it passes from north to south across the equator in the morning, while Aqua passes south to north over the equator in the afternoon. Terra MODIS and Aqua MODIS are viewing the entire Earth's surface every 1 to 2 days, acquiring data in 36 spectral bands, or groups of wavelengths (see MODIS Technical Specifications). These data will improve our understanding of global dynamics and processes occurring on the land, in the oceans, and in the lower atmosphere. MODIS is playing a vital role in the development of validated, global, interactive Earth system models able to predict global change accurately enough to assist policy makers in making sound decisions concerning the protection of our environment.
Published By National Aeronautics and Space Administration
Issued over 9 years ago
Summary
Description
The SeaWiFS instrument was launched by Orbital Sciences Corporation on the OrbView-2 (a.k.a. SeaStar) satellite in August 1997, and collected data from September 1997 until the end of mission in December 2010. SeaWiFS had 8 spectral bands from 412 to 865 nm. It collected global data at 4 km resolution, and local data (limited onboard storage and direct broadcast) at 1 km. The mission and sensor were optimized for ocean color measurements, with a local noon (descending) equator crossing time orbit, fore-and-aft tilt capability, full dynamic range, and low polarization sensitivity.
Published By National Aeronautics and Space Administration
Issued over 9 years ago
Summary
Description
The AIRS Level 3 8-Day Gridded Retrieval Product contains standard retrieval means, standard deviations and input counts. Each file covers an 8-day period, or one-half of the Aqua orbit repeat cycle. The mean values are simply the arithmetic means of the daily products, weighted by the number of input counts for each day in that grid box. The geophysical parameters have been averaged and binned into 1 x 1 deg grid cells, from -180.0 to +180.0 deg longitude and from -90.0 to +90.0 deg latitude. For each grid map of 4-byte floating-point mean values there is a corresponding 4-byte floating-point map of standard deviation and a 2-byte integer grid map of counts. The counts map provides the user with the number of points per bin that were included in the mean and can be used to generate custom multi-day maps from the daily gridded products. The geophysical parameters are: Skin Temperature, Surface Air Temperature, Air Temperature, Tropopause, Precipitable Water, Water Vapor, Cloud Amount/Frequency, Cloud Height, Cloud Top Pressure, Cloud Top Temperature, Reflectance, Emissivity, Sea Surface Temperature, Ozone, Surface Pressure, Cloud Vertical Distribution. (The Shortname for this product is AIRX3ST8).
Published By Small Business Administration
Issued over 9 years ago
Summary
Description
Information about SBA CIO’s membership in governance boards.
Published By National Aeronautics and Space Administration
Issued over 9 years ago
Summary
Description
The MATMCPMST or tavgM_3d_mst_Cp data product is the MERRA Data Assimilation System 3-Dimensional moist process diagnostic that is time averaged on pressure levels at a reduced resolution. It is a history file that is produced from the GCM during the corrector segment of the IAU cycle. All collections from this group are at reduced horizontal resolution. MERRA, or the Modern Era Retrospective-analysis for Research and Application, is a NASA reanalysis for the satellite era (30 years 1979-current) using the Goddard Earth Observing System Data Assimilation System Version 5 (GEOS-5 DAS). This data product contains 2-dimensional and 3-dimensional fields that do not vary during the reanalysis. The data are on the GEOS-5 native 288 x 144 grid with 1.25° longitude x 1.25° latitude resolution. The pressure-level data will be output in 42 pressure levels. The files contain the monthly means. Data are archived in the HDF-EOS (Grid) format, based on HDF4.
Published By National Aeronautics and Space Administration
Issued over 9 years ago
Summary
Description
The flux and ancillary data collected at the SSA-OJP tower flux site by the TF-05 group.
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 Johnston Atoll, site 1BP 16 47.147N, 169 27.695W, between 30 and 31 meters along a permanent transect.
Published By National Aeronautics and Space Administration
Issued over 9 years ago
Summary
Description
This grouping contains the incompressible-flow cases from the 1980-81 Data Library.
Published By US Fish and Wildlife Service, Department of the Interior
Issued over 9 years ago
Summary
Description
This narrative report for Waubay National Wildlife Refuge outlines Refuge accomplishments from May through August of 1942. The report begins by summarizing the weather conditions, habitat conditions, water conditions, and food and cover during this period. Wildlife including migratory birds, upland game birds, big game animals, furbearers, predators, rodents, mammals, and raptors is also covered. The Refuge development and maintenance section discusses physical developments and plantings. Resource management is outlined; topics include grazing and haying. The public relations section of the report describes recreational uses, Refuge visitors, and Refuge participation.
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 Howland Island, site 14P 00 48.663N, 176 37.438W, between 6 and 7 meters along a permanent transect.
Published By National Aeronautics and Space Administration
Issued over 9 years ago
Summary
Description
This data set reports the results of a study to measure soil emissions of the carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O), and nitric oxide (NO) throughout an entire cropping cycle in (1) slash-and-burn and (2) chop-and-mulch prepared agricultural fields from 2001-2004. An adjacent 15-year-old fallow field with secondary forest vegetation served as the control. The study site is within the municipality of Igarape Acu, Para, Brazil, at the Experimental Farm of the Federal Rural University of Amazonia. Flux data are reported in one comma-separated file.
Published By National Aeronautics and Space Administration
Issued over 9 years ago
Summary
Description
The GPM Ground Validation Meteorological Tower Environment Canada GCPEx dataset provides temperature, relative humidity, 10m winds, pressure and solar radiation data collected by a suite of standard meteorological instruments attached to a 10m met tower. Browse images are available on-line. The observation station was assembled by Automated Transportable Meteorological Observation Station (ATMOS). Data was gathered over the Ontario region of Canada in 2012 from Jan 15 through March 1.
Published By US Fish and Wildlife Service, Department of the Interior
Issued over 9 years ago
Summary
Description
As part of the Chesapeake Bay Agreement, the Maryland Toxics Reduction Strategy for the Chesapeake Bay and its Tributaries committed the State to identify the most extensively used pesticides and to select those to be included in any monitoring program. As a first step toward implementing a monitoring program, this reconnaissance level survey analyzed water from streams throughout the state for seven priority pesticides: atrazine, alachlor, carbofuran, chlorpyrifos, cyanazine, metolachlor, and simazine. Water samples were collected from 21 sites on 12 streams, ranging in size from small drainage ditches between agricultural fields to major rivers such as the Monocacy River. All but one of the seven pesticides were detected. Metolachlor was detected most frequently in 14 of 21 sampling sites, followed by atrazine and cyanazine both occurring in 6 of 21 sites. Chlorpyrifos was detected in only one stream which was surrounded by urban and industrial development. Carbofuran was not detected in any sample, however laboratory tests showed degradation may have occurred during storage. The largest stream sampled, the Monocacy River, contained the highest number of pesticides. Only one stream, excluding control streams, contained no detectable levels of the seven pesticides. Chlorpyrifos was the only pesticide analyzed for with established U.S. Environmental Protection Agency water quality criteria. Levels found in samples from the single stream were at or above acute and chronic criteria levels for the protection of freshwater aquatic organisms. All other pesticides detected were herbicides, and occurred at concentrations several orders of magnitude below those expected to cause toxicity to vertebrates and invertebrates. Atrazine was measured in samples from some streams at levels ranging from below detection to 2.88 ugL. Results of other studies have indicated toxicity to photosynthetic organisms at these levels. Recommendations for future monitoring and further research are provided.
Published By National Aeronautics and Space Administration
Issued over 9 years ago
Summary
Description
Clear Science Corp. proposes to develop computational methods for designing active flow control systems on aerospace vehicles with the primary objective of controlling lift, drag, and flow separation. Simulated control inputs will include moving boundaries for aerodynamic shaping and aspirating walls for virtual shaping and separation control. The software will include model order reduction, system state estimation, integration of low-dimensional models and estimators with high-order CFD-based models for control-in-the-loop simulations, and the integration of turbulence models with control models. CSC is developing reduced-order flow control models for laminar, incompressible flow based on a proper orthogonal decomposition of the primitive flow variables, and we will extend the methods to compressible formulations with conserved variables and turbulence models. We will develop and demonstrate our computational methods using LaRC's CFD code, CFL3D. Control models and estimators will be modular in the form of both embedded and pre-processing subroutines, enabling off-line and in-the-loop control design and testing. The project will include the application of modeling and estimation techniques to moving-mesh problems for control simulations with time-dependent system disturbances (e.g. changing angles of attack) and wing warping control input. Phase I work includes a demonstration of the technical merit of the tool and the development of a detailed Phase II work plan.
Published By National Aeronautics and Space Administration
Issued over 9 years ago
Summary
Description
GHRSST Level 3C Atlantic Subskin Sea Surface Temperature from the Spinning Enhanced Visible and Infrared Imager (SEVIRI) on MetOp-A satellite (GDS2 version)
RICOMB_4MGEO: 4-m Grid of the Combined Multibeam Bathymetry Generated from National Oceanic and Atmospheric Administration (NOAA) Surveys H11922, H11995, H11996, H12009, H12010, H12011, H12015, H12023, H12033, H12137, H12139, H12296, H12298, and H12299 Of
Published By U.S. Geological Survey, Department of the Interior
Issued over 9 years ago
Summary
Description
Detailed bathymetric maps of the sea floor in Block Island and Rhode Island Sounds are of great interest to the New York, Rhode Island, and Massachusetts research and management communities because of this area's ecological, recreational, and commercial importance. Geologically interpreted digital terrain models (DTMs) from individual surveys provide important benthic environmental information, yet many applications require a geographically broader perspective. For example, individual surveys are of limited use for the planning and construction of cross-sound infrastructure, such as cables and pipelines, or for the testing of regional circulation models. To address this need, we integrated 14 contiguous multibeam bathymetric DTMs, produced by the National Oceanic and Atmospheric Administration during charting operations, into one dataset that covers much of Block Island Sound and extends eastward across Rhode Island Sound. The new dataset, which covers over 1255 square kilometers, is adjusted to mean lower low water, is gridded to 4-meter resolution, and is provided in UTM Zone 19 NAD 83 and geographic WGS 84 projections. This resolution is adequate for sea-floor feature and process interpretation but is small enough to be queried and manipulated with standard Geographic Information System programs and to allow for future growth. Natural features visible in the grid include boulder lag deposits of winnowed Pleistocene strata, sand-wave fields, and scour depressions that reflect the strength of the oscillating and asymmetric tidal currents and scour by storm-induced waves. Bedform asymmetry allows interpretations of net sediment transport. Together the merged data reveal a larger, more continuous perspective of bathymetric topography than previously available, providing a fundamental framework for research and resource management activities off the Rhode Island coast.
Published By National Aeronautics and Space Administration
Issued over 9 years ago
Summary
Description
ML2HOCL is the EOS Aura Microwave Limb Sounder (MLS) standard product for hypochlorous acid derived from radiances measured primarily by the 640 GHz radiometer. The current version is 2.2. Spatial coverage is near-global (-82° to +82° latitude), with each profile spaced 1.5° or ~165 km along the orbit track (roughly 15 orbits per day). The recommended useful vertical range is from 10 to 2.15 hPa, and the vertical resolution is about 6 km. Users of the ML2OHCL data product should read section 3.12 of the EOS MLS Level 2 Version 2.2 Quality Document for more information (http://mls.jpl.nasa.gov/data/v2-2_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 EOS Hierarchical Data Format (HDF-EOS5), which is based on the version 5 Hierarchical Data Format, or HDF5. Each file contains two swath objects (one with profile data, the other with column data), each with a set of data and geolocation fields, swath attributes, and metadata. The data fields include the geophysical parameter values and precision (standard deviation), convergence values, data quality, and a status flag. The geolocation fields include a time stamp in TAI-93 format (seconds since January 1, 1993), geodetic latitude and longitude, and pressure level values, as well as local solar time, solar zenith angle, line of sight angle, and orbit geodetic angle. There is one file per day.