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SIBER SPIS sept 2011.pdf - IMBER

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<strong>SIBER</strong><br />

Science Plan and Implementation Strategy<br />

Ap p e n d i x IV.<br />

Sc i e n c e a n d i m p l e m e n t a t i o n<br />

p l a n f o r b i o g e o c h e m i c a l s e n s o r<br />

d e v e l o p m e n t a n d d e p l o y m e n t o n<br />

r a m a m o o r i n gs<br />

Deployment of biogeochemical sensors on autonomous vehicles and moored physical sensor<br />

arrays is the next logical and essential step toward developing a global ocean physicalbiogeochemical<br />

observing system. The ongoing deployment of the Indian Ocean Observing<br />

system (IndOOS) and the Research Moored Array for African-Asian-Australian Monsoon<br />

Analysis and Prediction (RAMA) mooring array (McPhaden et al., 2009) presents a unique<br />

opportunity to combine physical and biological sensor deployment through the collaborative<br />

efforts of IndOOS, RAMA, IOGOOS and the emerging <strong>SIBER</strong> program. This unique collaboration<br />

has been facilitated by CLIVAR’s Indian Ocean Panel (IOP), which recognizes the importance<br />

of fostering physical, biogeochemical and ecological research in the IO.<br />

This appendix provides specific guidance for developing and deploying biogeochemical<br />

sensors on RAMA moorings in the IO. It is hoped that the realization of this plan will benefit<br />

from the momentum of the IndOOS, RAMA, IOGOOS and <strong>SIBER</strong> programs.<br />

Obj e c t i v e s<br />

The overarching objectives that provide the motivation for deployment of biogeochemical<br />

sensors on RAMA moorings in the IO are as follows:<br />

1. To provide data for defining biogeochemical variability in key regions of the IO and for<br />

understanding the physical, biological and chemical processes that govern it.<br />

2. To provide data for developing and validating models of ocean-atmosphere-biosphere<br />

interactions.<br />

3. To provide baseline data for assessing the impacts of climate change on oceanic primary<br />

productivity and air-sea CO 2 exchange.<br />

Sit e se l e c t i o n<br />

Biogeochemical measurements should be made where they make the most scientific sense.<br />

The RAMA mooring array design/deployment team has identified eight sites for air-sea<br />

observatories (Flux Reference Sites, Fig. A4.1). Because of the comprehensive suite of<br />

co-located complementary measurements they would provide, these sites would also be logical<br />

places for biogeochemical sensors.<br />

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