This study aims at introducing two conservative thermodynamic variables (moist-air entropy potential temperature and total water content) into a one-dimensional variational data assimilation system (1D-Var) to demonstrate their benefits for use in future operational assimilation schemes. This system is assessed using microwave brightness temperatures (TBs) from a ground-based radiomet... http://safeersappliancers.shop/product-category/faber-daisy-b-eg6-a55-55cm-angled-cooker-hood-black-glass-330-0529-064/