Published By National Oceanic and Atmospheric Administration, Department of Commerce
Issued over 9 years ago
Summary
Description
This dataset consists of Level III weather radar products collected from Next-Generation Radar (NEXRAD) stations located in the contiguous United States, Alaska, Hawaii, U.S. territories and at military base sites. NEXRAD is a network of 160 high-resolution Doppler weather radars operated by the NOAA National Weather Service (NWS), the Federal Aviation Administration (FAA), and the U.S. Air Force (USAF). Doppler radars detect atmospheric precipitation and winds, which allow scientists to track and anticipate weather events, such as rain, ice pellets, snow, hail, and tornadoes, as well as some non-weather objects like birds and insects. NEXRAD stations use the Weather Surveillance Radar - 1988, Doppler (WSR-88D) system. This is a 10 cm wavelength (S-Band) radar that operates at a frequency between 2,700 and 3,000 MHz. The radar system operates in two basic modes: a slow-scanning Clear Air Mode (Mode B) for analyzing air movements when there is little or no precipitation activity in the area, and a Precipitation Mode (Mode A) with a faster scan for tracking active weather. The two modes employ nine Volume Coverage Patterns (VCPs) to adequately sample the atmosphere based on weather conditions. A VCP is a series of 360 degree sweeps of the antenna at pre-determined elevation angles and pulse repetition frequencies completed in a specified period of time. The radar scan times 4.5, 5, 6 or 10 minutes depending on the selected VCP. During 2008, the WSR-88D radars were upgraded to produce increased spatial resolution data, called Super Resolution. The earlier Legacy Resolution data provides radar reflectivity at 1.0 degree azimuthal by 1 km range gate resolution to a range of 460 km, and Doppler velocity and spectrum width at 1.0 degree azimuthal by 250 m range gate resolution to a range of 230 km. The upgraded Super Resolution data provides radar reflectivity at 0.5 degree azimuthal by 250 m range gate resolution to a range of 460 km, and Doppler velocity and spectrum width at 0.5 degree azimuthal by 250 m range gate resolution to a range of 300 km. Super resolution makes a compromise of slightly decreased noise reduction for a large gain in resolution. In 2010, the deployment of the Dual Polarization (Dual Pol) capability to NEXRAD sites began with the first operational Dual Pol radar in May 2011. Dual Pol radar capability adds vertical polarization to the previous horizontal radar waves, in order to more accurately discern the return signal. This allows the radar to better distinguish between types of precipitation (e.g., rain, hail and snow), improves rainfall estimates, improves data retrieval in mountainous terrain, and aids in removal of non-weather artifacts. The NEXRAD products are divided in two data processing levels. The lower Level II data are base products at original resolution. Level II data are recorded at all NWS and most USAF and FAA WSR-88D sites. From the Level II quantities, computer processing generates numerous meteorological analysis Level III products. The Level III data consists of reduced resolution, low-bandwidth, base products as well as many derived, post-processed products. Level III products are recorded at most U.S. sites, though non-US sites do not have Level III products. There are over 40 Level III products available from the NCDC. General products for Level III include the base and composite reflectivity, storm relative velocity, vertical integrated liquid, echo tops and VAD wind profile. Precipitation products for Level III include estimated ground accumulated rainfall amounts for one and three hour periods, storm totals, and digital arrays. Estimates are based on reflectivity to rainfall rate (Z-R) relationships. Overlay products for Level III are alphanumeric data that give detailed information on certain parameters for an identified storm cell. These include storm structure, hail index, mesocyclone identification, tornadic vortex signature, and storm tracking information. Radar messages for Level III are sent by the radar site to users in order to know more about the radar status and special product data. NEXRAD data are provided to the NOAA National Climatic Data Center for archiving and dissemination to users. Data coverage varies by station and ranges from May 1992 to 1 day from present. Most stations began observing in the mid-1990s, and most period of records are continuous.
Bailey's Ecoregions and Subregions of the United States, Puerto Rico, and the U.S. Virgin Islands - Direct Download
Published By U.S. Geological Survey, Department of the Interior
Issued over 9 years ago
Summary
Description
This map layer is commonly called Bailey's ecoregions and shows ecosystems of regional extent in the United States, Puerto Rico, and the U.S. Virgin Islands. Four levels of detail are included to show a hierarchy of ecosystems. The largest ecosystems are domains, which are groups of related climates and which are differentiated based on precipitation and temperature. Divisions represent the climates within domains and are differentiated based on precipitation levels and patterns as well as temperature. Divisions are subdivided into provinces, which are differentiated based on vegetation or other natural land covers. The finest level of detail is described by subregions, called sections, which are subdivisions of provinces based on terrain features. Also identified are mountainous areas that exhibit different ecological zones based on elevation.
Published By Small Business Administration
Issued over 9 years ago
Summary
Description
Certain government programs, such as SBA loan programs and contracting opportunities, are reserved for small business concerns. In order to qualify, businesses must satisfy SBA's definition of a small business concern, along with the size standards for small business
Published By U.S. Geological Survey, Department of the Interior
Issued over 9 years ago
Summary
Description
This is a polygon coverage of Physiographic Divisions in the conterminous United States. It was automated from Fenneman's 1:7,000,000-scale map, "Physical Divisions of the United States," which is based on eight major 1946 divisions, 25 provinces, and 86 sections representing distinctive areas having common topography, rock types and structure, and geologic and geomorphic history.
Published By U.S. Geological Survey, Department of the Interior
Issued over 9 years ago
Summary
Description
The geology data set for this map includes arcs, polygons, and labels that outline and describe the general geologic age and type of bedrock of Iran. The geologic provinces data set includes arcs, polygons, and labels of geologic and petroleum provinces interpreted and designated by R.M. Pollastro from a number of literature and map resources to assist in the assessment of oil and gas resources for the USGS World Energy Project. The oil and gas field centerpoints data set is a point coverage that marks the approximate centerpoints of oil and gas fields in Iran. Political boundaries are provided to show the general location of country and/or other reference 'political' boundaries.
Published By Department of Veterans Affairs
Issued over 9 years ago
Summary
Description
A system of records is a file, database, or program from which personal information is retrieved by name or other personal identifier. The Privacy Act provides a number of protections for your personal information. These typically include how information is collected, used, disclosed, stored, and disposed. As part of our privacy policy, VA conducts an annual review of our Privacy Act system of record notices to make sure that they are current and republishes those that require changes or updates. Please select the link to download the excel spreadsheet via the link labeled: 'Privacy Act System of Record'. The spreadsheet contains the following fields: SOR #, PUB DATE, CITATION, HYPERLINK TO FEDERAL REGISTER, SYSTEM TITLE, and POC.
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, 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. The FISs and FIRMs are published by the Federal Emergency Management Agency (FEMA).
Published By Department of Transportation
Issued over 9 years ago
Summary
Description
The Traffic Volume Trends montly report is a natinal data report that provides quality controlled vehicle miles traveled data for each State for all roadways
Published By U.S. Geological Survey, Department of the Interior
Issued over 9 years ago
Summary
Description
This coverage includes arcs, polygons, and polygon labels that describe the generalized geologic age and type of surface outcrops of bedrock of Southeast Asia (Brunei, Indonesia, Cambodia, Laos, Malaysia, Papua New Guinea, Philippines, Singapore, Solomon Islands and Vietnam; and portions of Australia, China and Taiwan). It also includes shorelines and inland water bodies.
Published By U.S. Geological Survey, Department of the Interior
Issued over 9 years ago
Summary
Description
Two bathymetric maps were developed by the U.S. Geological Survey, one for the Chukchi Sea and Arctic Ocean, and one for the Aleutian Trench and Bering Sea. The 2 maps overlap near the Bering Strait. Bathymetric contours were generated from several published sources. It is unclear whether new soundings were collected for these maps. The northern map extends from Wrangel Island, Russia to MacKenzie Bay, Canada, and north to 76 N latitude. The southern map extends from Shelikof Bay, Russia, to the western tip of the Alaska Peninsula, USA, and south to 48 N latitude. Bathymetric contours are at 400 meter intervals with 20, 30, 40, 50, 100, and 200 meter contours added. Contours above 50 meters are rare, and never along the Russian coast. Hard-copy maps were published by the USGS in 1976 and digitized by the Alaska Science Center in 1997. In digital format, the 2 maps have been connected where they overlap in the Bering Strait.
Published By U.S. Geological Survey, Department of the Interior
Issued over 9 years ago
Summary
Description
This map layer includes cities and towns in the United States, Puerto Rico, and the U.S. Virgin Islands. A city or town is a place with a recorded population, usually with at least one central area that provides commercial activities. Cities are generally larger than towns; no distinction is made between cities and towns in this map layer.
Published By Department of Defense
Issued over 9 years ago
Summary
Description
The datasets provides the operational costs associated with the ownership and operation of a set of Army ground vehicles (people and equipment movers), portable water treatment, and power generation sets. Viewers of this datasets can understand the cost of ownership and cost of using military equipment-both with and without support personnel.
Published By Department of Labor
Issued over 9 years ago
Summary
Description
The Current Employment Statistics Program provides employment, paid hours, and earnings information on a national basis in considerable industrial detail. The Bureau of Labor Statistics collects data each month from a sample of establishments in all nonfarm activities including government. The data include series for total employment; number of women employees; number of production or nonsupervisory employees; and for both all employees and for production and nonsupervisory employees, average hourly earnings, average weekly hours, average weekly earnings, and average weekly overtime hours. Overtime hoursare produced for manufacturing industries only.
Published By U.S. Department of Health & Human Services
Issued over 9 years ago
Summary
Description
The Youth Risk Behavior Surveillance System (YRBSS) monitors 6 types of health-risk behaviors that contribute to the leading causes of death and disability among youth and adults, including: behaviors that contribute to unintentional injuries and violence; sexual behaviors that contribute to unintended pregnancy and sexually transmitted diseases (STDs), including HIV infection; alcohol and other drug use; tobacco use; unhealthy dietary behaviors; inadequate physical activity. YRBSS also measures the prevalence of obesity and asthma among youth and young adults. YRBSS includes a national school-based survey conducted by CDC and state, territorial, tribal, and local surveys conducted by state, territorial, and local education and health agencies and tribal governments.
Published By Department of Education
Issued over 9 years ago
Summary
Description
EDFacts Special Education/IDEA 2011-12 (EDFacts SE/IDEA:2011-12) is one of 17 'topics' identified in the EDFacts documentation (in this database, each 'topic' is entered as a separate study); program data is available since 2005 at . EDFacts SE/IDEA:2011-12 (ed.gov/about/inits/ed/edfacts) annually collects cross-sectional data from states about students under the Individuals with Disabilities Education Act (IDEA), as amended, and special education programs and their staff at the LEA and state levels. EDFacts SE/IDEA:2011-12 data were collected using the EDFacts Submission System (ESS), a centralized portal and their submission by states is mandatory and required for benefits. Not submitting the required reports by a state constitutes a failure to comply with law and may have consequences for federal funding to the state. Key statistics produced from EDFacts SE/IDEA:2011-12 are from 14 data groups with information on IDEA - Student Count - Early Childhood, IDEA - Student Count - School Age, IDEA - Alternate Assessment Caps (1%/2%), IDEA - Not Participating in Assessments, IDEA - Exiting Special Education, IDEA - Suspensions/Expulsions, IDEA - Disciplinary Removals, IDEA - Total Disciplinary Removals, IDEA - Removal to Interim Alternative Educational Setting, IDEA - Reasons for Unilateral Removal, Educational Services During Expulsion, Special Education Teachers (FTE), Special Education Paraprofessionals (FTE), Special Education Related Services Personnel. For the purposes of this system, data groups are referred to as 'variables', as a result of the structure and format of EDFacts' data.
Published By US Fish and Wildlife Service, Department of the Interior
Issued over 9 years ago
Summary
Description
These boundaries are simplified from the U.S. Fish and Wildlife Service Real Estate Interest data layer containing polygons representing tracts of land (parcels) in which the Service has a real estate interest. Interior boundaries between parcels were dissolved to produce a single set of simplified external boundaries for each feature. These are resource grade mapping representations of the U.S. Fish and Wildlife Service boundaries. For legal descriptions of the land represented here, contact the USFWS Realty Office. This map layer was compiled by the U.S. Fish and Wildlife Service. Although these boundaries represent lands administered by the U.S. Fish and Wildlife Service, not all areas are open to the public. Some fragile habitats need to be protected from human traffic and some management areas are closed. The public is urged to contact specific Refuges or other conservation areas before visiting.
Published By U.S. Geological Survey, Department of the Interior
Issued over 9 years ago
Summary
Description
This map layer shows polygons of average annual precipitation in the contiguous United States, for the climatological period 1961-1990. Parameter-elevation Regressions on Independent Slopes Model (PRISM) derived raster data is the underlying data set from which the polygons and vectors were created. PRISM is an analytical model that uses point data and a digital elevation model (DEM) to generate gridded estimates of annual, monthly and event-based climatic parameters.
Published By Department of Veterans Affairs
Issued over 9 years ago
Summary
Description
Community Based Outpatient Clinics (CBOCs) at the end of Fiscal Year 2014. Data includes number of unique patients and clinic encounters.
Published By U.S. Geological Survey, Department of the Interior
Issued over 9 years ago
Summary
Description
This is a polygon coverage of the Land Resource Regions and Major Land Resource Areas of the conterminous United States. Land resource regions are geographic areas that are characterized by a particular pattern of soils, climate, water resources and land uses. (USDA, Soil Conservation Service, 1981). Major land resource areas are subregions of the land resource regions and comprise smaller homogeneous areas. The scale of this coverage is 1:2,000,000. Note: The Soil Conservation Service now (1995) is called the Natural Resources Conservation Service. Descriptors: Land Resource Regions Major Land Resource Areas United States
Published By U.S. Geological Survey, Department of the Interior
Issued over 9 years ago
Summary
Description
This map layer portrays our current understanding of the distributions of United States and Canadian bat species during the past 100-150 years. The specimen and capture data were obtained from a variety of data sources, including U.S. State natural heritage programs, Canadian conservation data centres, published literature, unpublished reports, museum collections, and personal communications from university, federal, State and local biologists. Records are all specimen, roost, capture, or positive visual identification-based; no acoustic-only identifications were used for this map layer.
Published By Department of Agriculture
Issued over 9 years ago
Summary
Description
VegScape is a geospatial data service which offers automated updates of vegetative condition at daily, weekly, and biweekly intervals. VegScape delivers interactive vegetation indices that enable quantification of U.S. crop conditions for exploring, visualizing, querying, and disseminating via interactive maps.
Published By National Oceanic and Atmospheric Administration, Department of Commerce
Issued over 9 years ago
Summary
Description
NOAA nowCOAST is a Geographic Information System (GIS)-based Web mapping portal which provides users with an integrated, one-stop access to online, real-time coastal environmental observations and NOAA forecasts for any region in the coastal United States. The information includes 1) displays of the latest surface weather and ocean observations, satellite cloud imagery, weather radar reflectivity mosaic, sea surface temperature and meteorological analyses, gridded weather forecasts, short-duration weather warnings, and tropical cyclone track forecasts and 2) geo-referenced hyperlinks to over fifteen thousands web pages providing current observations from meteorological, oceanographic, river, water and air quality observing networks and NOAA forecast products. Users can access nowCOAST via its map viewer using a web browser or web map services.
Published By U.S. Department of Health & Human Services
Issued over 9 years ago
Summary
Description
A collection of national resources on suicide prevention for service members, Veterans and their families.
USGS Land Cover (NLCD) Overlay Map Service from The National Map - National Geospatial Data Asset (NGDA) National Land Cover Database (NLCD)
Published By U.S. Geological Survey, Department of the Interior
Issued over 9 years ago
Summary
Description
The USGS Land Cover service from The National Map (TNM) consists of NLCD 1992, 2001, 2006, and 2011, which are National Land Cover Database (NLCD) classification schemes based primarily on Landsat satellite data along with ancillary data sources, such as topography, census and agricultural statistics, soil characteristics, wetlands, and other land cover maps. NLCD 1992 is a 21-class land cover classification scheme that has been applied consistently across the conterminous U.S. at a spatial resolution of 30 meters. NLCD 2001 is a 16-class land cover classification scheme that also has been applied to the conterminous U.S. at a spatial resolution of 30 meters, and includes Alaska, Hawaii, and Puerto Rico. NLCD 2006 quantified land cover change for the conterminous U.S. between the years 2001 to 2006. Generation of NLCD 2006 helped identify and correct issues in the 2001 land cover and impervious surface products only, and no changes were made to the 2001 canopy product. NLCD 2011 is the most recent national land cover product based primarily on a decision-tree classification of 2011 Landsat satellite data. The National Map viewer allows free downloads of public domain, 30-meter resolution land cover data by 3x3 degree tiles in GeoTIFF format for the United States and Puerto Rico. For additional information on land cover products, go to http://www.mrlc.gov.
TIGER/Line Shapefile, 2014, Series Information File for the Current American Indian/Alaska Native/Native Hawaiian Areas (AIANNH) National Shapefile
Published By US Census Bureau, Department of Commerce
Issued over 9 years ago
Summary
Description
The American Indian/Alaska Native/Native Hawaiian (AIANNH) Areas Shapefile includes the following legal entities: federally recognized American Indian reservations and off-reservation trust land areas, state-recognized American Indian reservations, and Hawaiian home lands (HHLs). The statistical entities included are Alaska Native village statistical areas (ANVSAs), Oklahoma tribal statistical areas (OTSAs), tribal designated statistical areas (TDSAs), and state designated tribal statistical areas (SDTSAs). Joint use areas are also included in this shapefile refer to areas that are administered jointly and/or claimed by two or more American Indian tribes. The Census Bureau designates both legal and statistical joint use areas as unique geographic entities for the purpose of presenting statistical data. Note that tribal subdivisions and Alaska Native Regional Corporations (ANRCs) are additional types of American Indian/Alaska Native areas stored by the Census Bureau, but are displayed in separate shapefiles because of how they fall within the Census Bureau's geographic hierarchy. The State of Hawaii's Office of Hawaiian Home Lands provides the legal boundaries for the HHLs. The boundaries for ANVSAs, OTSAs, and TDSAs were delineated for the 2010 Census through the Tribal Statistical Areas Program (TSAP) by participants from the federally recognized tribal governments. The Bureau of Indian Affairs (BIA) within the U.S. Department of the Interior (DOI) provides the list of federally recognized tribes and only provides legal boundary information when the tribes need supporting records, if a boundary is based on treaty or another document that is historical or open to legal interpretation, or when another tribal, state, or local government challenges the depiction of a reservation or off-reservation trust land. The boundaries for federally recognized American Indian reservations and off-reservation trust lands are as of January 1, 2013, as reported by the federally recognized tribal governments through the Census Bureau's Boundary and Annexation Survey (BAS). The boundaries for state-recognized American Indian reservations and for SDTSAs were delineated by a state governor-appointed liaisons for the 2010 Census through the State American Indian Reservation Program and TSAP respectively.