Diagnostic meteorology is intertwined with the role of humans in forecasting, as discussed in D86a. Truly, weather forecasting is part of the science of meteorology, but recent history has created the illusion of a dichotomy between them. This paper attempts to illustrate how we envision diagnostic meteorology should proceed. In the process, we shall provide a basis for understanding why the ga...

New Delhi, India is the most polluted megacity in world and routinely experiences high particulate matter (PM) concentrations. As part of Delhi Aerosol Supersite Study, we have been measuring PM1 concentration composition continuously since January 2017. This paper focuses on autumn, one seasons when concentrations steadily increase throughout season can exceed 1000 μg m–3 during episodic event...