+ All Categories
Home > Documents > Carbon and biogeochemistry of the sea ice zone Bates et al., (2006) Stephens and Keeling (2002)...

Carbon and biogeochemistry of the sea ice zone Bates et al., (2006) Stephens and Keeling (2002)...

Date post: 31-Mar-2015
Category:

Documents
Upload: giancarlo-gouldin
View: 224 times
Download: 0 times
Download Report this document
Share this document with a friend
Popular Tags:
airsea gas exchange
sea ice cover
solubility of o
diffusivity of o
cold halocline water
export production
siz national geographic
o weddell sea ice light
11
Carbon and biogeochemistry of the sea ice zone Bates et al., (2006) Stephens and Keeling (2002) Sigman et al., (2010) Takahashi et al., (2009) Arrigo et al., (2010) McNeil et al., (2007)
Transcript
Page 1: Carbon and biogeochemistry of the sea ice zone Bates et al., (2006) Stephens and Keeling (2002) Sigman et al., (2010) Takahashi et al., (2009) Arrigo et.

Carbon and biogeochemistry of the sea ice zone

Bates et al., (2006)

Stephens and Keeling (2002)Sigman et al., (2010)

Takahashi et al., (2009)

Arrigo et al., (2010)

McNeil et al., (2007)

Page 2: Carbon and biogeochemistry of the sea ice zone Bates et al., (2006) Stephens and Keeling (2002) Sigman et al., (2010) Takahashi et al., (2009) Arrigo et.

Ventilation and subduction in the sea ice zone(Arctic)

Steele et al., (1995)

AW = Atlantic water

ASW = Arctic surface water

CDW = Cold deep water

CHW = Cold halocline water

Page 3: Carbon and biogeochemistry of the sea ice zone Bates et al., (2006) Stephens and Keeling (2002) Sigman et al., (2010) Takahashi et al., (2009) Arrigo et.

DIC Pump Hypothesis

Mirabilite crystals Na2SO4·10H2O

(Arctic sea ice)

Ikaite crystalsCaCO3·6H2O

(Weddell Sea ice)

(Light et. al, 2003)

(Dieckmann et. al, 2008)

DIC

pump

Alk.

flux ?

Page 4: Carbon and biogeochemistry of the sea ice zone Bates et al., (2006) Stephens and Keeling (2002) Sigman et al., (2010) Takahashi et al., (2009) Arrigo et.

DIC Pump Hypothesis

DIC

pump

Alk.

flux ?

Zero sum gain scenario

Page 5: Carbon and biogeochemistry of the sea ice zone Bates et al., (2006) Stephens and Keeling (2002) Sigman et al., (2010) Takahashi et al., (2009) Arrigo et.

Arrigo et. al., 2008

Primary production and carbon uptake in the SIZ

© National Geographic

Page 6: Carbon and biogeochemistry of the sea ice zone Bates et al., (2006) Stephens and Keeling (2002) Sigman et al., (2010) Takahashi et al., (2009) Arrigo et.

CO2 rectification hypothesis

(Yager et al., 1995)

Export

production?

Alk.

flux ?

CO2

flux ?

Page 7: Carbon and biogeochemistry of the sea ice zone Bates et al., (2006) Stephens and Keeling (2002) Sigman et al., (2010) Takahashi et al., (2009) Arrigo et.

Springtime fluxes (S.O.)

Export

production?

Alk.

flux ?

CO2

flux ?

Loose et al., (2011)

• Net CO2

flux into mixed layer = Primary production – Gas exchange + upwelling*

• Gas exchange (k) is usually inferred, rarely measured.

• We need to measure Primary production + gas exchange at the same time in the SIZ.

Page 8: Carbon and biogeochemistry of the sea ice zone Bates et al., (2006) Stephens and Keeling (2002) Sigman et al., (2010) Takahashi et al., (2009) Arrigo et.

Do we have estimates of k in sea ice cover and do we believe them?

Fanning and Torres (1991)

Loose and Schlosser (2011)

Page 9: Carbon and biogeochemistry of the sea ice zone Bates et al., (2006) Stephens and Keeling (2002) Sigman et al., (2010) Takahashi et al., (2009) Arrigo et.

Air-sea gas exchange depends on aqueous turbulence

• Shear in the ice-ocean boundary layer (IOBL) (McPhee, 1992; McPhee, 2008, Andreas, 1986).

• Buoyant convection/stratification (Lombardo and Gregg, 1989; Morison et al., 1992)

• Short-period wind waves (Frew et al., 2004) and their interactions with ice floes

Page 10: Carbon and biogeochemistry of the sea ice zone Bates et al., (2006) Stephens and Keeling (2002) Sigman et al., (2010) Takahashi et al., (2009) Arrigo et.

How to measure gas exchange on MOSAiC?

Smethie et al., (1985), Peng et al., (1979)

226Ra originates in the sediments and bedrock.

226Ra decays to 222Rn.222Rn has 3.8 day half-life.

Page 11: Carbon and biogeochemistry of the sea ice zone Bates et al., (2006) Stephens and Keeling (2002) Sigman et al., (2010) Takahashi et al., (2009) Arrigo et.

5. How to measure gas exchange and primary production together?

National Geographic

Δ(O2

/Ar) Method:

Ar behaves like “abiotic O2

”

Solubility of Ar ~ Solubility of O2

Diffusivity of Ar ~ Diffusivity of O2

Δ(O2

/Ar) reflects excess oxygen of biogenic origin.

Net Community O2 production (NCP) = kρΔ(O2/Ar)


Recommended
Lean Six Sigman for Service

Lean Six Sigman for Service

Documents

EXHIBIT A2 - cases.justia.com · 811996 Konrad 1211996 Koppolu et al. 211997 Duscher et al. 311997 Koppolu et al. 511997 Koppolu et al. 711997 Ashe et al. 511998 Koppolu et al. 911998

EXHIBIT A2 - cases.justia.com · 811996 Konrad 1211996 Koppolu et al. 211997 Duscher et al. 311997 Koppolu et al. 511997 Koppolu et al. 711997 Ashe et al. 511998 Koppolu et al. 911998

Documents

cp-2019-158 Preprint. Discussion started: 23 …64 increased south Atlantic sea ice extent (Anderson et al., 2009; Sigman et al., 2010; Miller et al., 65 2019b). As suggested by Miller

cp-2019-158 Preprint. Discussion started: 23 …64 increased south Atlantic sea ice extent (Anderson et al., 2009; Sigman et al., 2010; Miller et al., 65 2019b). As suggested by Miller

Documents

Silver et al. v. Pueblo et al.

Silver et al. v. Pueblo et al.

Documents

Radiocarbon-based ages and growth rates of Hawaiian deep-sea … · Smith et al. 1997, Adkins et al. 1998, Smith et al. 2000, Weinbauer et al. 2000, Smith et al. 2002, Frank et al.

Radiocarbon-based ages and growth rates of Hawaiian deep-sea … · Smith et al. 1997, Adkins et al. 1998, Smith et al. 2000, Weinbauer et al. 2000, Smith et al. 2002, Frank et al.

Documents

(12) United States Patent (10) Patent No.: US 6,792,177 B2 ...Gale et al. Asakura Neukermans et al. Laor Pan et al. Laughlin Hornbeck Gove et al. Neukermans et al. Neukermans et al.

(12) United States Patent (10) Patent No.: US 6,792,177 B2 ...Gale et al. Asakura Neukermans et al. Laor Pan et al. Laughlin Hornbeck Gove et al. Neukermans et al. Neukermans et al.

Documents

Literature Review Messent et al (1998,1999) Robertson et al (2000) Beart et al (2001) Heller et al (2002)

Literature Review Messent et al (1998,1999) Robertson et al (2000) Beart et al (2001) Heller et al (2002)

Documents

W. et al. Tikka Kato et al. Unterberger Park et al. Carley Matsubara et al. Lee Bradley et al. Park et al. Schmidhammer et al. Ginsburg et al. Korden et al. Mikulin et al. Bouche et

W. et al. Tikka Kato et al. Unterberger Park et al. Carley Matsubara et al. Lee Bradley et al. Park et al. Schmidhammer et al. Ginsburg et al. Korden et al. Mikulin et al. Bouche et

Documents

(12) United States Patent (io) · Sevcik et al. Ryanetal..... 144/154.5 Govindaraj et al. Kennedy et al. Malone Woods et al. Takahashi et al. Dick et al. Ceroll et al. Caron et al.

(12) United States Patent (io) · Sevcik et al. Ryanetal..... 144/154.5 Govindaraj et al. Kennedy et al. Malone Woods et al. Takahashi et al. Dick et al. Ceroll et al. Caron et al.

Documents

Actin-based propulsive forces and myosin-II-based ... · Tsujioka et al. (Tsujioka et al., 2004), Ladam et al. (Ladam et al., 2005) and del Alamo et al. (del Alamo et al., 2007).

Actin-based propulsive forces and myosin-II-based ... · Tsujioka et al. (Tsujioka et al., 2004), Ladam et al. (Ladam et al., 2005) and del Alamo et al. (del Alamo et al., 2007).

Documents

The KMOS Redshift One Spectroscopic Survey (KROSS) · Kassin et al. 2007, 2012; Buitrago et al. 2008; Dunne et al. 2009; Peng et al. 2010; Geach et al. 2011; van Dokkum et al. 2011;

The KMOS Redshift One Spectroscopic Survey (KROSS) · Kassin et al. 2007, 2012; Buitrago et al. 2008; Dunne et al. 2009; Peng et al. 2010; Geach et al. 2011; van Dokkum et al. 2011;

Documents

Lean six-sigman-for-service

Lean six-sigman-for-service

Business

The human genome Lander et al. 2001 Venter et al. 2001 Patil et al. 2001 Gabriel et al. 2002 Reich et al. 2001 Sabeti et al. 2002 Yu et al. 2002.

The human genome Lander et al. 2001 Venter et al. 2001 Patil et al. 2001 Gabriel et al. 2002 Reich et al. 2001 Sabeti et al. 2002 Yu et al. 2002.

Documents

et al. 2015 Cultural... · Bain (1986) Morton et al. (1986) Bowles et al. (1988) Graham & Noonan (2010) Kremers et al. (2012) Crance et al. (2014) Musser et al. (2014) Topic Geographic

et al. 2015 Cultural... · Bain (1986) Morton et al. (1986) Bowles et al. (1988) Graham & Noonan (2010) Kremers et al. (2012) Crance et al. (2014) Musser et al. (2014) Topic Geographic

Documents

ars.els-cdn.com · Web viewKozu et al., Page 2 Kozu et al., Page 7 Kozu et al., Page 12 Kozu et al., Page 19 Kozu et al., Page 15 Kozu et al., Page 1 Kozu et al., Page 6 Kozu et al.,

ars.els-cdn.com · Web viewKozu et al., Page 2 Kozu et al., Page 7 Kozu et al., Page 12 Kozu et al., Page 19 Kozu et al., Page 15 Kozu et al., Page 1 Kozu et al., Page 6 Kozu et al.,

Documents

Unsteady Hydrodynamic Modeling of a Cycloidal PropellerBenedict et al 2014a, Benedict et al 2014b, Zachary et al 2013, Shrestha et al 2012, Shrestha et al 2014, Hrishikeshavan et al

Unsteady Hydrodynamic Modeling of a Cycloidal PropellerBenedict et al 2014a, Benedict et al 2014b, Zachary et al 2013, Shrestha et al 2012, Shrestha et al 2014, Hrishikeshavan et al

Documents

Sigman Draft Amendments (Clean Text) January 31, 2020 ...

Sigman Draft Amendments (Clean Text) January 31, 2020 ...

Documents

lecture 21 nitrogen - MIT OpenCourseWareSouthern ocean nitrate utilization changes Sigman et al., 1999 Higher δ15N in diatom-bound organic matter suggests higher degree of nitrate

lecture 21 nitrogen - MIT OpenCourseWareSouthern ocean nitrate utilization changes Sigman et al., 1999 Higher δ15N in diatom-bound organic matter suggests higher degree of nitrate

Documents