What is being called a “major outage” by the European Global Navigation Satellite System (GNSS) Agency, or GSA, highlights the critical importance played by the satellite systems that provide accurate positioning and time information to devices such as mobile phones, car navigation systems and other services such as land surveying.
GIS Software
How to Change the Projection of a Shapefile Using QGIS
If you know the starting coordinate system or projection of your shapefile, you can quickly export the data into another coordinate or projections system using QGIS.
Maps and Cartography
How Refugees are Using GIS to Map Their Geographies and Experiences
Story maps are a powerful tool that tell events and what has happened to those who are displaced.
Maps and Cartography
Analyzing the Benefits of Green Space on Mental Health Using GIS
A recent large-scale study in Denmark combined historical Landsat satellite data and a survey that recorded mental health benefits to respondents to analyze the relationship between green space and mental health.
GIS Data
NASA is Expanding its Worldwide Landslide Data Catalog Using Volunteers
NASA has developed Landslide Reporter as a way to collect as much information as possible about landslides from citizen scientists from around the world.
Spatial Analysis
Using Remote Sensing to Detect Structural Changes in Bridges
Researchers are using synthetic aperture radar (SAR) collected from satellites to detect structural changes in bridges.
GIS Data
New GIS Dataset: Forest Carbon Stocks for the Western United States
Covering 11 states, this GIS dataset contains annual estimates of carbon stocks, fluxes, and productivity for Arizona, California, Colorado, Idaho, Montana, Nevada, New Mexico, Oregon, Utah, Washington, and Wyoming.
Maps and Cartography
GISP Certification Exam Revised
The GIS Certification Institute (GISCI) recently announced that it has revised the blueprint for its Geospatial Core Technical Knowledge Exam.
GIS Data
Changes to the National Land Cover Database
The National Land Cover Database is a GIS dataset that is seen as critical for monitoring the impact of fires, particularly increased wildfires in the West, general health of ecosystems, biodiversity monitoring, and increasing effects of climate change on land cover.
Maps and Cartography
Gini Coefficient and GIS: Mapping Income Disparities
The Gini coefficient is a long-standing measure used by major organizations, such as the UN and government entities, to measure disparities between income and wealth in countries.