Recent changes in atmospheric input and primary productivity in the north Indian Ocean.

Global oceanic regions are rapidly changing in terms of their temperature, oxygen, heat content, salinity and biogeochemistry. Since the biogeochemistry of the oceans is important and pivotal for global food production, and a major part of the world population relies on marine resources for their daily life and livelihood, it is imperative to monitor and find the spatio-temporal changes in the primary productivity of oceans. Here, we estimate the changes in Chlorophyll-a (Chl-a) and Net Primary Productivity (NPP) in the north Indian Ocean (NIO) basins of Bay of Bengal and Arabian Sea for the period 1998-2019.

A high concentration CO pool over the Indo-Pacific Warm Pool.

Anthropogenic emissions have produced significant amount of carbon dioxide (CO) in the atmosphere since the beginning of the industrial revolution. High levels of atmospheric CO increases global temperature as CO absorbs outgoing longwave radiation and re-emits. Though a well-mixed greenhouse gas, CO concentration is not uniform in the atmosphere across different altitudes and latitudes.