GIS and Geospatial Technologies

Articles focusing on the application of geographic information systems (GIS), geospatial technologies, remote sensing, LiDAR, and Global Positioning System (GPS). These technologies serve as critical tools for understanding and interacting with our physical environment. GIS allows for the mapping and analysis of spatial data Geospatial technologies refer to the various tools used to measure and analyze Earth’s lands and resources. Remote sensing provides a way to collect data from a distance, often via satellites or high-flying aircraft, and is commonly used for environmental monitoring and military applications.

GIS subcategories :

GIS Career | GIS Data | GIS Industry | GIS Learning | GIS Software | GPS | Remote Sensing | Spatial Analysis

Laptop with QGIS, a desktop GIS software program

GIS 101: Learn About GIS

Caitlin Dempsey

This GIS 101 page is the launch page for accessing information about GIS and geospatial technologies on GIS Lounge.

Women in GIS Networking Groups

Caitlin Dempsey

Web sites with information specifically regarding peer support for women in GIS.

Nukuhou coastal wetland. A tidal wetland with grey mangroves (Avicennia marina) and salt marsh threatened by sea level rise. At Ohiwa Harbor, North Island, New Zealand.

Mapping Coastal Ecosystem Change

Mark Altaweel

A collaboration initiative, called coastTrain, helps to provide data so that scientists can better address challenges coastal regions face.

A four-paneled diagram showing a vertical slice of a satellite imagery with forest damage, a second panel with land use change, a third panel symbolized to show the date of changes, and the fourth panel shows the magnitude of the change.

Mapping Long-term Land Use Change with Remote Sensing Data

Mark Altaweel

Discover how remote sensing technology is used to map land use changes, providing valuable insights into environmental impacts and aiding conservation efforts.

Examples of topological errors in GIS that can occur during data creation/digitization. Image: Caitlin Dempsey

GIS Data: A Look at Accuracy, Precision, and Types of Errors

Geo Contributor

What are the types of error found in GIS data? This article reviews the difference between accuracy and precision and explains the most common types of error found in GIS data.

Screenshot of a mapping application showing satellite imagery with areas that have hurricane damage outlined in orange.

Using Geospatial Technologies to Map Hurricane Response

Mark Altaweel

Using satellite data and artificial intelligence, researchers have developed a way to rapidly map hurricane destruction.

Screenshot showing contours in brown and green in ArcGIS Pro.

How To Create Contours in ArcGIS Pro from LIDAR Data

Jeff Oppong

This ArcGIS Pro tutorial shows how to add LIDAR data from the National Map to ArcGIS Pro and create topography contours.

A map of a statistical surface with a gradient of mostly yellow and shades of orange.

GIS and Spatial Interpolation Methods

Mark Altaweel

The use of spatial interpolation methods in GIS have proven vital from areas such as public health to interpreting weather patterns.

Open Source GIS and Freeware GIS Applications

Caitlin Dempsey

There are many open source GIS and web mapping applications to choose from.

Map of GIS Job Listings in the US

Heat Maps in GIS

Caitlin Dempsey

Heat mapping, from a GIS perspective, is a method of showing the geographic clustering of a phenomenon.

What is the Difference Between GIS and Geospatial?

Caitlin Dempsey

There are differences in what the terms GIS and geospatial mean.

Free GIS Books

Caitlin Dempsey

Most of these free GIS books are available in downloadable PDF format and can be read from a computer or on an eBook reader.  

Laptop with QGIS, a desktop GIS software program

Ten Tips to Prepare for a GIS Job Interview

Kristina Jacob

Got a portfolio? Kristina Jacob presents ten tips for preparing for a GIS job interview.

Map showing Rhode Island. Areas in red have a high GEMI index.

How to use ArcGIS Pro and Landsat 8 Imagery to Calculate Chlorophyll Index and Global Environmental Monitoring Index

Jeff Oppong

Learn to create a chlorophyll index using Landsat 8 imagery in ArcGIS Pro with this step-by-step GIS tutorial.

Screenshot from a GIS software program showing an aerial image with geospatial data overlays for Missouri.

Finding GIS Data and Using QGIS to Map Caves

Geo Contributor

Dackery Geiman outlines the challenges he encountered finding geospatial data about caves and using QGIS to map cave density in Missouri.

Elevation map with shades of green.

GIS in Land Use Planning and Surveying

Geo Contributor

Michael Parks explains how he used GIS data and imagery to develop geospatial analysis and maps to recommend potential base camp sites.

A detailed map showing a shaded relief area and a popup with attribute data about a fly fishing shop.

Using GIS to Map Fly Fishing Destinations

Geo Contributor

William Bakemeyer describes how he used QGIS and open source data to create a fly fishing map.

A shaded orange map showing areas of the United States with higher than normal carbon dioxide in the atmosphere.

Remote Sensing for Carbon Offsetting

Mark Altaweel

Remote sensing and geospatial technologies are being harnessed for carbon offsetting efforts.

Two images - one from 2013 and one from 2021 showing changes in orange in the coastline of an area.

QGIS from a Graduate Student’s Perspective

Geo Contributor

Kent Campbell writes about how he has come to view the benefits of using QGIS as a graduate student.

A remote sensing image showing surface temperatures across a section of Paris. The hottest temperatures are in red and the coolest temperatures are in green.

Mapping Heat Vulnerability from Satellite Data

Mark Altaweel

Satellites are being used to measure heat not only on urban heat islands, but also on farms and other locations where rising temperatures are having an impact.

An artistic rendition of a satellite collecting data from a strip of land and ocean.

Mapping the Earth’s Freshwater Bodies

Mark Altaweel

Over 95% of the world's lakes, rivers, and freshwater reservoirs will be measured by a new satellite mission called Surface Water and Ocean Topography (SWOT).

A screenshot showing a transparent green polygon on top of a purple polygon with a dark grey 3D geographic background.

Crowdsourcing Archaeological Data with Participatory GIS

Geo Contributor

People with little or no training in archaeology or geographic computing systems can build GIS data using Humap's Placemaker.

Screenshot from an online app called Suncalc with a satellite image of a lake with sun and shadow measurements in yellow overlaid.

Using Open Source Geospatial Data in Journalism

Mark Altaweel

Geospatial data such as satellite imagery can be used by journalists to verify news stories.

Side by side comparison of screenshots of a data layer with a simple red outline and black labels as seen in ArcGIS Online and QGIS.

How to Add Data from ArcGIS Online to QGIS

Caitlin Dempsey

Adding data from an ArGIS Online Map Service or Feature Service into a QGIS map project is fairly easy and quick in most instances.

Natural color Landsat scene showing a brown landscape covered by small clouds that dot the landscape.

Landsat: Longest Running Earth Imagery Program

Caitlin Dempsey

With satellites in orbit since 1972, the Landsat program is the longest running Earth observation program.

A Roundup of Geospatial Podcasts

Caitlin Dempsey

Here's a list of GIS / geospatial podcasts you can listen to.