WASHINGTON, May 1 -- Geophysical Research Letters, a journal from the American Geophysical Union that says it publishes research on major scientific advances in geoscience disciplines, published research articles on the following topics in its May 2021 edition:

Research Letters:

* Demons in the North Atlantic: Variability of Deep Ocean Ventilation

* Observed Trends in the South Asian Monsoon Low-Pressure Systems and Rainfall Extremes Since the Late 1970s