Ocean acidification

Conference Description: The Second International Indian Ocean Expedition (IIOE-2) was launched in December 2015 at the culmination of the Indian Ocean Conference at Goa to mark the completion of 50 years of first International Indian Ocean Expedition. The IIOE-2 is a multi-national, multi-institutional programme to advance our understanding of the physical, chemical, biological, geological and climatological aspects of the Indian Ocean to enhance its role on the socio-economy of the region.

Abstract submission deadline: 15 October, 2019

Sessions:
01: IIOE-2 contribution to sustainable development: toward the UN Decade of ocean science
02: Impacts of climate change on the Indian Ocean
03: Circulation and Boundary currents in the Indian Ocean
04: Ocean observations and data in the Indian Ocean: toward an ocean data information system
05: Biogeochemistry and Microbiology of the Indian Ocean: Recent advances
06: Ecology of the Indian Ocean: Understanding and Predictability
07: Air-Sea interactions, exchange of trace gases and related processes
08: Atmospheric Chemistry and pollution
09: Coastal and estuarine processes: Anthropogenic impacts and vulnerabilities
10: Climate and monsoon variability: Lessons from paleo-climatic studies and links to polar regions
11: Inter-basin interactions in the Indian Ocean
12: Marginal seas of the Indian Ocean
13: Geology, geophysics and seabed mapping of the Indian Ocean
14: Extreme events and their impacts

Continue reading ‘Call for abstracts: International Indian Ocean Science Conference, 16-20 March 2020, Goa, India’

Date: Tuesday, September 3, 2019 7:00-9:00 pm CEST

Description: The purpose of this webinar is to share an update on a 6-year effort to build an integrated model of the California Current System and apply it to investigations of ocean acidification and hypoxia, including local anthropogenic inputs and climate change. Panelists will:
provide an update on the status of the modeling system;
share early examples of model applications; and,
discuss how the model investments are already being leveraged to applications beyond acidification and hypoxia.

Panelists:
Jim McWilliams, UCLA Department of Earth and Atmospheric Sciences
Curtis Deutsch, University of Washington School of Oceanography
Fayçal Kessouri, Biogeochemistry Department, Southern California Coastal Water Research Project
Daniele Bianchi, UCLA Department of Earth and Atmospheric Sciences

Continue reading ‘Upcoming webinar: Integrated modeling of OAH: supporting management in the California Current’

GCAN Webinar Series Presents: Dr. Xinping Hu & Dr. Leticia Barbero

Date: August 21st @ 1:00pm EST

Description: A five-year (2013-2018) time-series of the carbonate chemistry data (pCO2, pH, and carbonate saturation state) collected in surface waters at the Flower Garden Banks National Marine Sanctuary in the northwestern Gulf of Mexico (nwGOM) revealed variable temporal trends. pC O2 and pH showed significant positive (dpC O 2/dt = 5.0±1.1 μatm yr-1) and negative trends (dpH/dt = – 0.0040±0.0010 yr-1), respectively. Both trends were significantly greater than those observed in the open ocean. However, carbonate saturation states with respect to aragonite (Ωarag) did not exhibit statistically significant changes. The difference between these trends (or the lack of) may be partially due to the increase in sea surface temperature (0.25±0.09˚C yr-1), in addition to CO2 induced ocean acidification. In contrast,
significant decadal acidification (ΔpH ~ -0.1) in the subsurface waters (~50-250 m) w as observed in the broader nwGOM based on three separate cruises (2007, 2016, and 2017). Substantial accumulation of respirational CO2 along with atmospheric CO2 uptake may have both contributed to this acidification, but with many unknowns. We will discuss an upcoming project funded by the NOAA’s Ocean Acidification Program (OAP) that targets the ocean acidification problem in the nwGOM.

Continue reading ‘Upcoming webinar: Ocean Acidification in the northwestern Gulf of Mexico’

The FRAM Centre, Nature Climate Change, and Nature Reviews Earth and Environment are pleased to present

A Changing Arctic
June 2-5, 2020
Clarion Hotel The Edge, Tromsø, Norway

Description:
Robust evidence now exists for anthropogenically-forced shifts in the Earth’s environment. Observations in the Arctic reveal dramatic reductions in the extent and thickness of the sea ice, rising atmospheric temperatures, widespread permafrost degradation and ocean acidification. These changes bring with them implications for biology, ecosystem services and society in general.
Full understanding of current and projected Arctic environmental change is becoming an imperative in order to minimize and manage corresponding impacts. This conference aims to provide a forum for the three main themes of:

Land – incorporating ecological impacts, permafrost, and landscape evolution
Ocean (coastal and open) – incorporating physical changes, ocean acidification, and ecological impacts
The Future — covering social aspects and including mitigation, adaptation, exploration, and management

Continue reading ‘Registration open: A Changing Arctic conference, 2-5 June 2020, Tromso, Norway’

The 36th International Geological Congress will be held on 2-8 March 2020 in Delhi, India, and will include a session on ocean acidification under the theme “Oceans in a Changing World”.

Session name: Response of Marine Organisms to Ocean Acidification

Session description: Over the last century, extensive anthropogenic activities on earth led to an unprecedented increase in the atmospheric CO2 concentration and thus warming our climate. The surface oceans absorb a substantial part of the anthropogenically emitted CO2 and increased accumulation of CO2 in the surface ocean waters is increasing H+ and bicarbonate ion (HCO3-1) concentrations, coupled with decreasing pH [acidification (OA)] and carbonate ion (CO3-2) concentrations. The major shift in dissolved inorganic carbon speciation in surface seawater is affecting calcium carbonate saturation state, which is vital for numerous marine calcifying organisms. There have also been examples of resilient species under low pH condition. Autotrophic organism, like phytoplankton may respond differently to this ocean changes since increasing CO2 may be beneficial to them as a substrate for photosynthesis. Our oceans also experiencing warming and hence, under collective (multi-) stress may become deleterious for marine biota. Further, ocean warming is resulting in major changes in ocean physics which may further change nutrient availability and light penetration. These may have potential to impact the entire food chain, fisheries resources and carbon cycling. This symposium intends to include field and laboratory studies on extent of ocean acidification and its impact on marine ecology, with particular emphasis on Indian waters.

Continue reading ‘Session on ocean acidification, 36th International Geological Congress, 2-8 March 2020, Delhi, India’