diff --git a/data/presentations.yml b/data/presentations.yml
index 9ff2123..7c12a74 100644
--- a/data/presentations.yml
+++ b/data/presentations.yml
@@ -3,6 +3,16 @@ title  : PRESENTATIONS
 image  : images/banners/aurora.jpg
 items  :
 
+  - title: Tutorial on Scientific Data Compression: SPERR
+    authors:
+      - Li, S.
+      - Lindstrom, P.
+      - Clyne, J.
+    conference: The International Conference for High Performance Computing, Networking, Storage, and Analysis (SC23)
+    year: 2023
+    extra: Denver, CO
+    url: https://vast.ucar.edu/pdfs/Li_SC23_Slides.pdf
+
   - title: Project Rajin and UXarray, community tools for the analysis of kilometer scale climate and weather model outputs
     authors:
       - Clyne, J.
@@ -19,7 +29,7 @@ items  :
     conference: 37th IEEE International Parallel & Distributed Processing Symposium (IPDPS)
     year: 2023
     extra: St. Petersburg, FL
-    url: https://docs.google.com/presentation/d/144BQrZcpFcWi2px-xnQgQnaOnIyQHvuifA2zChgkYiE/edit?usp=sharing
+    url: https://vast.ucar.edu/pdfs/Li_IPDPS23_Slides.pdf
 
   - title: Examining the Accessibility Barriers of Data Visualizations for Geoscience Professionals Who Are Blind/Vision-Impaired
     authors:
diff --git a/static/pdfs/Li_IPDPS23_Slides.pdf b/static/pdfs/Li_IPDPS23_Slides.pdf
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diff --git a/static/pdfs/Li_SC23_Slides.pdf b/static/pdfs/Li_SC23_Slides.pdf
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