SEDAC's POPGRID Viewer enables direct comparison of different population datasets based on different data sources and methodologies. The tool incorporates a four-panel display of six different data sets, including Gridded Population of the World, Landscan, WorldPop, and Human Settlements Population Grid.
SEDAC's Population Estimation Service is a web-based service that lets users of a wide variety of map clients and tools quickly obtain estimates of the number of people residing in a user-defined geographic region, without having to download and analyze large amounts of spatial data.
NASA's Socioeconomic Data and Applications Center (SEDAC) publishes most of the data it distributes via a suite of online mapping services—Web Map Service (WMS), Web Feature Service (WFS), and Web Coverage Service (WCS). The WMS, WFS, and WCS are Open Geospatial Consortium (OGC) standards that enable a simple HTTP interface for requesting geo-referenced map images and data over the Internet from one or more distributed geospatial data sources.
The NASA Socioeconomic Data and Applications Center (SEDAC) publishes most of the data it distributes via a suite of online mapping services—Web Map Service (WMS), Web Feature Service (WFS), and Web Coverage Service (WCS). The WFS is an Open Geospatial Consortium (OGC) standard that enables a simple HTTP interface to request geo-referenced map images and data over the Internet from one or more distributed geospatial data sources.
The Soil Moisture Visualizer, developed by NASA's Oak Ridge National Laboratory DAAC (ORNL DAAC), is a tool that integrates a variety of different soil moisture datasets over North America. The visualization tool incorporates in-situ, airborne, and remote sensing data into one easy-to-use platform.
The Spatial Data Access Tool (SDAT), developed by NASA's Oak Ridge National Laboratory DAAC (ORNL DAAC), is an Open Geospatial Consortium (OGC) standards-based web application to visualize and download spatial data in various user-selected spatial/temporal extents, file formats, and projections. Datasets including land cover, biophysical properties, elevation, and selected ORNL DAAC archived data are available through SDAT.
A protocol defines a set of rules used by two or more parties to interact between themselves. A standard is a formalized protocol accepted by most of the parties that implement it. Not all protocols are standards (some are proprietary). Not all standards are protocols (some govern other layers than communication).
State of the Ocean (SOTO), developed by NASA's Pysical Oceanography Distributed Active Archive Center (PO.DAAC), is an interactive web-based tool that generates informative maps, animations, and plots that communicate and prove the discovery and analysis of the state of the oceans.
The Surface Water and Ocean Topography (SWOT) Swath Visualizer provides a visualization of two instruments’ coverage of Earth's surface: the Ka-band Radar Interferometer (KaRIn) and altimeter. Users can search for places of interest to obtain swath information.
Synthetic aperture radar, or SAR, uses the microwave region of the electromagnetic spectrum. SAR can penetrate cloud cover and “see through” darkness and weather, allowing a unique view of flood inundation, land cover changes, and modifications of Earth’s surface from landslides, earthquakes, and background tectonic motion. NASA’s home for SAR data and imagery is the Alaska Satellite Facility Distributed Active Archive Center (ASF DAAC).
Carbon in Arctic Reservoirs Vulnerability Experiment (CARVE) collected airborne measurements of atmospheric carbon dioxide, methane, and carbon monoxide and relevant land surface parameters in the Alaskan Arctic. Users can visualize he atmospheric gas concentration (left y-axis) and altitude (right y-axis) recorded over the duration of the flight with the Visualize CARVE Data tool.
A web service is a generic term for an interoperable machine-to-machine software function that is hosted at a network addressable location. A web service has an interface that hides the implementation details so that it can be used independently of the hardware or software platform on which it is implemented and independently of the programming language in which it is written.