Caitlin Dempsey, Author at GIS Lounge

The left image shows the USDA CDL layer for Corn and soybean classification around Webster City, Hamilton County, Iowa in 2001. The right image shows the results of the Corn-Soy Data Layer (CSDL). Figure: Wang et al., 2020.

Mapping Crops: Filling in Data Gaps with Landsat Archives

October 2, 2020 by Caitlin Dempsey

A recent study analyzed twenty years of Landsat data to look at corn and soybean crops across the US Midwest from 1998-2018.

QGIS on a laptop. Image: Caitlin Dempsey

Survey of GIS Professionals

September 26, 2020September 20, 2020 by Caitlin Dempsey

A quick look at GIS professionals, their educational background, and the software tools and programming languages they use in their jobs.

Map A shows OpenStreetMap (OSM) building footprints overplayed onto an aerial. Map B shows predicted building footprint by area. The darker purple areas predict a high frequency of building footprints. The yellow overlay are the OSM building footprint layer. Source: Goldblatt, Jones, & Mannix, 2020, CC BY 4.0

Using Open Source Geospatial Tools to Find Missing Building Footprints

August 28, 2020August 28, 2020 by Caitlin Dempsey

Researchers have developed a methodology that uses remote sensing measurements to predict completeness in coverage of building footprints in OpenStreetMap data.

Researchers have mapped out the ecological quality of tropical forests using satellite data.

Mapping Tropical Forest Quality from Satellite Data

September 29, 2020August 26, 2020 by Caitlin Dempsey

Researchers have created high resolution maps of tropical forest quality using remotely sensed data from NASA satellites.

Esri’s Disaster Response Program Hurricane Hub site

Find Maps and GIS Data from Esri’s Hurricane Hub

August 26, 2020 by Caitlin Dempsey

Esri has set up a Disaster Response Program Hurricane Hub site to consolidate federal sources of GIS data and maps.

Screenshot of the OpenTopography map interface.

Find Open Sources of Elevation Data With OpenTopography

October 9, 2020August 25, 2020 by Caitlin Dempsey

OpenTopography is a portal that provides access to open sources of topographical datasets and processing tools.

Self-Guided QGIS Courses

October 9, 2020August 21, 2020 by Caitlin Dempsey

These six QGIS courses are available for free self-guided learning.

GIS and Map Contests Roundup

September 4, 2020August 17, 2020 by Caitlin Dempsey

Current map and GIS related competitions listed in order of the competition deadline.

Blue are areas of high spatial accuracy while orange areas are less spatially accurate.

Esri Debuts New GIS Tools and Apps at the 2020 Annual User Conference

July 22, 2020 by Caitlin Dempsey

The first two plenary sessions contained a lot of demonstrations by Esri staff featuring the new GIS tools and applications launching this year.

Esri Cartographers have selected a few of their favorite maps from this year's Esri UC Virtual Map Gallery.

Curated Tour of the Esri UC Map Gallery

July 13, 2020 by Caitlin Dempsey

Esri cartographers have created a curated tour of the 2020 virtual Esri UC map gallery with some handpicked selections.

Three different GIS datasets were used to create the Global Subnational River Borders. Source: Popelka and Smith, 2020.

Rivers as Borders: GIS Dataset Available For Downloading

July 11, 2020 by Caitlin Dempsey

The Global Subnational River Borders GIS dataset is freely available for download.

What to Expect With the Esri Virtual Conference

July 10, 2020 by Caitlin Dempsey

This year the Esri UC 2020 will be held from Monday, July 13 to Thursday, July 16, 2020 as a virtual conference.

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