Interpreting seasonal changes in the carbon balance of southern Amazonia using measurements of XCO2 and chlorophyll fluorescence from GOSAT

Nicholas C. Parazoo; Kevin Bowman; Christian Frankenberg; Jung-Eun Lee; Joshua B. Fisher; John Worden; Dylan B. A. Jones; Joseph Berry; G. James Collatz; Ian T. Baker; Martin Jung; Junjie Liu; Gregory Osterman; Chris O'Dell; Athena Sparks; Andre Butz; Sandrine Guerlet; Yukio Yoshida; Huilin Chen; Christoph Gerbig

doi:10.1002/grl.50452

Interpreting seasonal changes in the carbon balance of southern Amazonia using measurements of XCO2 and chlorophyll fluorescence from GOSAT

Nicholas C. Parazoo^*, Kevin Bowman, Christian Frankenberg, Jung-Eun Lee, Joshua B. Fisher, John Worden, Dylan B. A. Jones, Joseph Berry, G. James Collatz, Ian T. Baker, Martin Jung, Junjie Liu, Gregory Osterman, Chris O'Dell, Athena Sparks, Andre Butz, Sandrine Guerlet, Yukio Yoshida, Huilin Chen, Christoph Gerbig

^*Corresponding author for this work

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Abstract

Amazon forests exert a major influence on the global carbon cycle, but quantifying the impact is complicated by diverse landscapes and sparse data. Here we examine seasonal carbon balance in southern Amazonia using new measurements of column-averaged dry air mole fraction of CO2 (XCO2) and solar induced chlorophyll fluorescence (SIF) from the Greenhouse Gases Observing Satellite (GOSAT) from July 2009 to December 2010. SIF, which reflects gross primary production (GPP), is used to disentangle the photosynthetic component of land-atmosphere carbon exchange. We find that tropical transitional forests in southern Amazonia exhibit a pattern of low XCO2 during the wet season and high XCO2 in the dry season that is robust to retrieval methodology and with seasonal amplitude double that of cerrado ecosystems to the east (4ppm versus 2ppm), including enhanced dilution of 2.5ppm in the wet season. Concomitant measurements of SIF, which are inversely correlated with XCO2 in southern Amazonia (r=-0.53, p

Original language	English
Pages (from-to)	2829-2833
Number of pages	5
Journal	Geophysical research letters
Volume	40
Issue number	11
DOIs	https://doi.org/10.1002/grl.50452
Publication status	Published - 16-Jun-2013

Keywords

carbon cycle
amazon
satellite remote sensing
GOSAT
chlorophyll fluorescence
biomass burning
CO2 RETRIEVAL ALGORITHM
ATMOSPHERIC CO2
RAIN-FOREST
DROUGHT
DIOXIDE
DIEBACK
SPACE
LAND

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Parazoo, N. C., Bowman, K., Frankenberg, C., Lee, J.-E., Fisher, J. B., Worden, J., Jones, D. B. A., Berry, J., Collatz, G. J., Baker, I. T., Jung, M., Liu, J., Osterman, G., O'Dell, C., Sparks, A., Butz, A., Guerlet, S., Yoshida, Y., Chen, H., & Gerbig, C. (2013). Interpreting seasonal changes in the carbon balance of southern Amazonia using measurements of XCO2 and chlorophyll fluorescence from GOSAT. Geophysical research letters, 40(11), 2829-2833. https://doi.org/10.1002/grl.50452

@article{e6ac0f75b68e4255bfe0579f2952329b,

title = "Interpreting seasonal changes in the carbon balance of southern Amazonia using measurements of XCO2 and chlorophyll fluorescence from GOSAT",

abstract = "Amazon forests exert a major influence on the global carbon cycle, but quantifying the impact is complicated by diverse landscapes and sparse data. Here we examine seasonal carbon balance in southern Amazonia using new measurements of column-averaged dry air mole fraction of CO2 (XCO2) and solar induced chlorophyll fluorescence (SIF) from the Greenhouse Gases Observing Satellite (GOSAT) from July 2009 to December 2010. SIF, which reflects gross primary production (GPP), is used to disentangle the photosynthetic component of land-atmosphere carbon exchange. We find that tropical transitional forests in southern Amazonia exhibit a pattern of low XCO2 during the wet season and high XCO2 in the dry season that is robust to retrieval methodology and with seasonal amplitude double that of cerrado ecosystems to the east (4ppm versus 2ppm), including enhanced dilution of 2.5ppm in the wet season. Concomitant measurements of SIF, which are inversely correlated with XCO2 in southern Amazonia (r=-0.53, p",

keywords = "carbon cycle, amazon, satellite remote sensing, GOSAT, chlorophyll fluorescence, biomass burning, CO2 RETRIEVAL ALGORITHM, ATMOSPHERIC CO2, RAIN-FOREST, DROUGHT, DIOXIDE, DIEBACK, SPACE, LAND",

author = "Parazoo, {Nicholas C.} and Kevin Bowman and Christian Frankenberg and Jung-Eun Lee and Fisher, {Joshua B.} and John Worden and Jones, {Dylan B. A.} and Joseph Berry and Collatz, {G. James} and Baker, {Ian T.} and Martin Jung and Junjie Liu and Gregory Osterman and Chris O'Dell and Athena Sparks and Andre Butz and Sandrine Guerlet and Yukio Yoshida and Huilin Chen and Christoph Gerbig",

year = "2013",

month = jun,

day = "16",

doi = "10.1002/grl.50452",

language = "English",

volume = "40",

pages = "2829--2833",

journal = "Geophysical research letters",

issn = "0094-8276",

publisher = "AMER GEOPHYSICAL UNION",

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Parazoo, NC, Bowman, K, Frankenberg, C, Lee, J-E, Fisher, JB, Worden, J, Jones, DBA, Berry, J, Collatz, GJ, Baker, IT, Jung, M, Liu, J, Osterman, G, O'Dell, C, Sparks, A, Butz, A, Guerlet, S, Yoshida, Y, Chen, H & Gerbig, C 2013, 'Interpreting seasonal changes in the carbon balance of southern Amazonia using measurements of XCO2 and chlorophyll fluorescence from GOSAT', Geophysical research letters, vol. 40, no. 11, pp. 2829-2833. https://doi.org/10.1002/grl.50452

TY - JOUR

T1 - Interpreting seasonal changes in the carbon balance of southern Amazonia using measurements of XCO2 and chlorophyll fluorescence from GOSAT

AU - Parazoo, Nicholas C.

AU - Bowman, Kevin

AU - Frankenberg, Christian

AU - Lee, Jung-Eun

AU - Fisher, Joshua B.

AU - Worden, John

AU - Jones, Dylan B. A.

AU - Berry, Joseph

AU - Collatz, G. James

AU - Baker, Ian T.

AU - Jung, Martin

AU - Liu, Junjie

AU - Osterman, Gregory

AU - O'Dell, Chris

AU - Sparks, Athena

AU - Butz, Andre

AU - Guerlet, Sandrine

AU - Yoshida, Yukio

AU - Chen, Huilin

AU - Gerbig, Christoph

PY - 2013/6/16

Y1 - 2013/6/16

N2 - Amazon forests exert a major influence on the global carbon cycle, but quantifying the impact is complicated by diverse landscapes and sparse data. Here we examine seasonal carbon balance in southern Amazonia using new measurements of column-averaged dry air mole fraction of CO2 (XCO2) and solar induced chlorophyll fluorescence (SIF) from the Greenhouse Gases Observing Satellite (GOSAT) from July 2009 to December 2010. SIF, which reflects gross primary production (GPP), is used to disentangle the photosynthetic component of land-atmosphere carbon exchange. We find that tropical transitional forests in southern Amazonia exhibit a pattern of low XCO2 during the wet season and high XCO2 in the dry season that is robust to retrieval methodology and with seasonal amplitude double that of cerrado ecosystems to the east (4ppm versus 2ppm), including enhanced dilution of 2.5ppm in the wet season. Concomitant measurements of SIF, which are inversely correlated with XCO2 in southern Amazonia (r=-0.53, p

AB - Amazon forests exert a major influence on the global carbon cycle, but quantifying the impact is complicated by diverse landscapes and sparse data. Here we examine seasonal carbon balance in southern Amazonia using new measurements of column-averaged dry air mole fraction of CO2 (XCO2) and solar induced chlorophyll fluorescence (SIF) from the Greenhouse Gases Observing Satellite (GOSAT) from July 2009 to December 2010. SIF, which reflects gross primary production (GPP), is used to disentangle the photosynthetic component of land-atmosphere carbon exchange. We find that tropical transitional forests in southern Amazonia exhibit a pattern of low XCO2 during the wet season and high XCO2 in the dry season that is robust to retrieval methodology and with seasonal amplitude double that of cerrado ecosystems to the east (4ppm versus 2ppm), including enhanced dilution of 2.5ppm in the wet season. Concomitant measurements of SIF, which are inversely correlated with XCO2 in southern Amazonia (r=-0.53, p

KW - carbon cycle

KW - amazon

KW - satellite remote sensing

KW - GOSAT

KW - chlorophyll fluorescence

KW - biomass burning

KW - CO2 RETRIEVAL ALGORITHM

KW - ATMOSPHERIC CO2

KW - RAIN-FOREST

KW - DROUGHT

KW - DIOXIDE

KW - DIEBACK

KW - SPACE

KW - LAND

U2 - 10.1002/grl.50452

DO - 10.1002/grl.50452

M3 - Article

SN - 0094-8276

VL - 40

SP - 2829

EP - 2833

JO - Geophysical research letters

JF - Geophysical research letters

IS - 11

ER -

Interpreting seasonal changes in the carbon balance of southern Amazonia using measurements of XCO2 and chlorophyll fluorescence from GOSAT

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