Sipai Nazirahmed
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View article: Potential of various minerals and their biogeochemical implications for ocean alkalinity enhancement in the southeastern Arabian Sea
Potential of various minerals and their biogeochemical implications for ocean alkalinity enhancement in the southeastern Arabian Sea Open
Ocean alkalinity enhancement (OAE) is emerging as a promising yet largely untested marine carbon dioxide CO2 removal approach. It involves the addition of alkaline substances such as powdered minerals and aqueous hydroxide solutions to sea…
View article: Supplementary material to "Potential of various minerals and their biogeochemical implications for ocean alkalinity enhancement in the southeastern Arabian Sea"
Supplementary material to "Potential of various minerals and their biogeochemical implications for ocean alkalinity enhancement in the southeastern Arabian Sea" Open
View article: LONG-TERM DECLINE IN PICOPHYTOPLANKTON ABUNDANCE AND CARBON BIOMASS IN THE ARABIAN SEA: EVIDENCE FROM 1995 AND 2019
LONG-TERM DECLINE IN PICOPHYTOPLANKTON ABUNDANCE AND CARBON BIOMASS IN THE ARABIAN SEA: EVIDENCE FROM 1995 AND 2019 Open
Picophytoplankton play a critical role in marine primary production, particularly in oligotrophic regions such as the Arabian Sea. In this study, we assessed changes in the picophytoplankton abundance and carbon biomass of Prochlorococcus …
View article: Diazotrophs: An Overlooked Sink of N<sub>2</sub>O
Diazotrophs: An Overlooked Sink of N<sub>2</sub>O Open
The ocean is the second‐largest source of greenhouse gas nitrous oxide (O). However, its role as an O sink is severely overlooked. O fixation by diazotrophs has lately been proposed as a new pathway of O consumption. We investigated diazot…
View article: Volcanic ash likely triggers N2 fixation in the Andaman Sea&#160;
Volcanic ash likely triggers N2 fixation in the Andaman Sea  Open
Marine N2 fixation fuels the growth of primary producers, drives marine carbon export fluxes, and in turn, influence the Earth’s climate. While the Bay of Bengal is at least explored, the Andaman Sea, which is adjacent to the only ac…
View article: Winter Convective Mixing Mediating Coupling of N-gain and -loss in the Arabian Sea
Winter Convective Mixing Mediating Coupling of N-gain and -loss in the Arabian Sea Open
Marine dinitrogen (N2) fixation fuels primary production and thereby influences the Earth’s climate. Yet, its geographical distribution and controlling environmental parameters remain debatable. We measured N2 fixation rates from the…
View article: Primary productivity in the northern Indian Ocean: role of nutrients stoichiometry
Primary productivity in the northern Indian Ocean: role of nutrients stoichiometry Open
Primary production (PP) is the basis for marine food web, which sustains life in the ocean through photosynthesis by removing carbon dioxide from the atmosphere. The rate of primary production is dependent on several factors such as light …
View article: N2 fixation rates, primary production, cyanobacterial community, and satellite-derived chlorophyll and dust aerosol optical depth data in the Bay of Bengal.
N2 fixation rates, primary production, cyanobacterial community, and satellite-derived chlorophyll and dust aerosol optical depth data in the Bay of Bengal. Open
Dataset provides values for N2 fixation, primary production and relative abundance of cyanobacterial communities along with the various environmental parameters for the Bay of Bengal sampled during the Indian spring inter-monsoo…
View article: N2 fixation rates, primary production, cyanobacterial community and dust aerosol optical depth data in the Bay of Bengal.
N2 fixation rates, primary production, cyanobacterial community and dust aerosol optical depth data in the Bay of Bengal. Open
Dataset provides values for N2 fixation, primary production and relative abundance of cyanobacterial communities along with the various environmental parameters for the Bay of Bengal sampled during the Indian spring inter-monsoo…
View article: N2 fixation rates, primary production and cyanobacteria in the Bay of Bengal.xlsx
N2 fixation rates, primary production and cyanobacteria in the Bay of Bengal.xlsx Open
Dataset provides values for N2 fixation, primary production and relative abundance of cyanobacterial communities along with the various environmental parameters for the Bay of Bengal sampled during the Indian spring inter-monsoo…
View article: Primary production and dark C fixation.xlsx
Primary production and dark C fixation.xlsx Open
Dataset provides values for primary production and dark carbon fixation along with the various environmental parameters for the Arabian Sea (the north-western Indian Ocean) sampled during the Indian winter monsoon season.
View article: Key role of overlooked twilight zone towards climate buffering
Key role of overlooked twilight zone towards climate buffering Open
<p>The twilight zone of the oceans layering between the bottom of the sunlit ocean and 1000 m depth, is one of the largest continuous ecosystems on the Earth, yet remains least explored. While the sunlit ocean is well-studied for its…
View article: Role of eddies and N2 fixation in shaping C:N:P proportions in the Bay of Bengal during spring
Role of eddies and N2 fixation in shaping C:N:P proportions in the Bay of Bengal during spring Open
<p>Bioavailable nitrogen (N) and phosphorus (P) determine the strength of the ocean’s carbon (C) uptake and variation in their ratio (N:P) is key to phytoplankton growth. A similarity between C:N:P ratio (106:16:1) in plank…