This website provides information on the NCAR Command Language and NCR Graphics. The NCAR Command Language (NCL) is a programming language designed specifically for the access, analysis, and visualization of data. NCL can be run in interactive mode, where each line is interpreted as it is entered at your workstation, or it can be run in batch mode as an interpreter of complete scripts. NCAR Graphics, ... Full description.

This site is a collaborative effort to organize and distribute Matlab tools for the oceanographic community. Matlab is multi-platform software that provides numeric computation, technical graphics and visualization, and an intuitive programming language for applications in engineering and science. This site provides links to and downloads of code for oceanographic data analysis tools, including time ... Full description.

The focus of this site is fluvial geomorphology. It offers information on modelling and simulations of drainage basins, floodplain and stream meandering, and landform evolution on Mars. A series of slideshows by the author are available, organized regionally: California Coast Ranges, Desert Southwest, Western U.S. and Alaska, Colorado Plateau, Midwest and Great Plains. Eastern US, Tropical Paradises, ... Full description.

This web application, developed mainly for elementary school students, shows the phases of the Moon for each day of a selected month from any given latitude and longitude. The calendar can be set from 3999 BC to 3999 AD. Each day can be looked at individually, or can be animated to go through the phases. Other information includes the distance to the Moon, time of Moonrise and Moonset, and the distance ... Full description.

The materials at this site discuss the interconnectedness of ecosystems including animals, vegetation and climate, and the impact of extinctions on human perception. The site includes: the End of Eden, a brief description of the extinction model results; the Case of the Aboricidal Megaherbivores, a detective story with Skylark Holmes and Dr. Janet Watson; The ecosystem extinctions model which you ... Full description.

This Java applet shows the analemma and where the Sun is positioned in varying areas of the world. The program can be set to any latitude and longitude for the current date. Information also includes sunrise and sunset times and current elevation and azimuth of the Sun. A downloadable demonstration of the analemma is also available. Full description.

This Java applet displays the amount of daylight an area receives on a given date. The program can be set to any major urban area (or latitude and longitude), and shows the position of the Sun for the desired settings, daylight hours for the month and year, azimuth and elevation, twilight hours, and path with an horizon view. A downloadable demonstration is also available. Full description.

This Java applet shows the pattern of an object's shadow (made by the Sun - such as a tree shadow) through the course of the day from any given latitude and longitude. The object height can be changed to view changes in the shadow for any day and time span (such as 1 hour or 7 hours) in a recent or future year. The Sun's elevation, azimuth, sunrise and sunset time, and culmination time are all given. ... Full description.

This Java applet sun exposure and intensity for any latitude and longitude, and any date during the current year. The times of most intense and dangerous sunshine are given through a chart and global map, as well as a graph indicating the current location of the Sun in terms of strength. There is also an indication of sunrise, sunset, and Sun culmination. Full description.

This Java applet contains information about the Sun and Moon in relation to Earth. It can be set to any latitude and longitude for any date in the current, recent, or future years. Information provided includes times for sunrise, moonrise, sunset, and moonset. Altitude, azimuth, and declination of the Sun and Moon are also given. A downloadable demonstration is available. Full description.