Update README.md

README.md

@@ -32,7 +32,22 @@ HiRO (High Resolution Output) is a diffusion model which generates downscaled fi
 
 ### Strengths and weaknesses
 
-<!-- will leave to Andre and Troy to decide what to list here -->
+#### ACE2S
+The strengths of ACE2S are:
+- stochastic (generative) emulator of 100km coarsened X-SHiELD 
+- improved small scale variability compared to deterministic ACE2 (especially surface precipitation)
+- exact conservation of global dry air mass and moisture
+- low time-mean biases for most variables 
+- compatible with HiRO model with no observed degradation
+
+Some known weaknesses of ACE2S are:
+- trained only on 9 years of X-SHiELD (2014-2022)
+- not expected to generalize outside of the limited forcing conditions used during training (e.g., SSTs and CO2)
+- not suitable for weather forecasting (e.g., not trained on reanalysis data only climate model output)
+- model was not tested as rigorously as ACE2-ERA5 (e.g., cannot comment on stratospheric variability, etc) 
+- overestimation of tropical cyclone generation compared to X-SHiELD
+- some aspects of the pre-training and fine-tuning methodologies did not have ablations
+- exactly pre-training and fine-tuning methodologies are subject to potential significant changes for future versions 
 
 ## License