About the Presentation: The distribution and fluctuation of open surface water in lentic (standing) water bodies (i.e., lakes, reservoirs, ponds, dugouts, and wetlands) are shifting rapidly in response to climate change and human alterations to catchments. Monitoring lentic open surface water dynamics is both important and urgent—not just for long-term trends, but also to capture short-term fluctuations. The HydroPatterns pilot project, conducted in two pilot areas (one in the boreal region and one in the prairies), leveraged open-access Sentinel optical and radar satellite imagery, machine learning, and cloud-based technologies to map open surface water on Alberta’s landscape at a monthly scale and 10-meter resolution, achieving over 90% overall accuracy. Compared to existing surface water dynamics products, the fully automated HydroPatterns workflow offers improved edge delineation, detects a greater numbers of small water features (<1 ha), and identifies more non-permanent water features. By providing both intra- and inter-annual inundation frequency metrics, along with month-to-month variations in water extent, the HydroPatterns can be scaled up province-wide to support data-driven decision-making for water and wetland management and conservation efforts. Presenter’s Bio: Thuy Doan is a remote sensing scientist at the ABMI with a background in grassland ecology. She began her career applying remote sensing and GIS techniques to develop vegetation management plans, conserve the iconic plains bison, and map the remaining native grasslands in the Saskatchewan prairies. In April 2023, Thuy joined the Earth Observation Insight Unit within the ABMI’s Geospatial Centre. Since then, she has been working with the team using satellite imagery and a range of geospatial tools and technologies to support habitat mapping and monitoring across Alberta’s diverse landscapes.
The #GDAL Project Steering Committee recently hosted a webinar highlighting the major #modernization of the GDAL command-line interface, featuring the unification of commands and improved parameter consistency. You can now catch up on all the details through the webinar slides, the recording, and a Q&A summary.
Happy #JuneSolstice! Have a great weekend! 🙂
Understanding seasons - a look at the hourly incoming sunlight during the two solstices (23.5°N/S). I've added a red marker for ease of viewing. Graphic can be downloaded at https://zacklabe.com/arctic-climate-seasonality-and-variability/
Spatialists
Zack Labe