Combining observations in the reflective solar and thermal domains for improved mapping of carbon, water and energy fluxes

Rasmus Houborg; Martha Anderson; Bill Kustas; Matthew Rodell

doi:10.1109/IGARSS.2010.5651597

Combining observations in the reflective solar and thermal domains for improved mapping of carbon, water and energy fluxes

Rasmus Houborg^*, Martha Anderson, Bill Kustas, Matthew Rodell

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

This study investigates the utility of integrating remotely sensed estimates of leaf chlorophyll (C _ab) into a thermal-based Two-Source Energy Balance (TSEB) model that estimates land-surface CO ₂ and energy fluxes using an analytical, light-use-efficiency (LUE) based model of canopy resistance. Day to day variations in nominal LUE (LUE _n) were assessed for a corn crop field in Maryland U.S.A. through model calibration with CO ₂ flux tower observations. The optimized daily LUE _n values were then compared to estimates of C _ab integrated from gridded maps of chlorophyll content weighted over the tower flux source area. Changes in C _ab exhibited a curvilinear relationship with corresponding changes in daily calibrated LUE _n values derived from the tower flux data, and hourly water, energy and carbon flux estimation accuracies from TSEB were significantly improved when using C _ab for delineating spatio-temporal variations in LUE _n. The results demonstrate the synergy between thermal infrared and shortwave reflective wavebands in producing valuable remote sensing data for monitoring of carbon and water fluxes.

Original language	English (US)
Title of host publication	2010 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010
Pages	2648-2651
Number of pages	4
DOIs	https://doi.org/10.1109/IGARSS.2010.5651597
State	Published - 2010
Externally published	Yes
Event	2010 30th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010 - Honolulu, HI, United States Duration: Jul 25 2010 → Jul 30 2010

Other

Other	2010 30th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010
Country/Territory	United States
City	Honolulu, HI
Period	07/25/10 → 07/30/10

Keywords

Carbon flux
Leaf chlorophyll
Light use efficiency
Reflective shortwave
Thermal infrared

ASJC Scopus subject areas

Earth and Planetary Sciences(all)
Computer Science Applications

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10.1109/IGARSS.2010.5651597

Cite this

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title = "Combining observations in the reflective solar and thermal domains for improved mapping of carbon, water and energy fluxes",

abstract = "This study investigates the utility of integrating remotely sensed estimates of leaf chlorophyll (C ab) into a thermal-based Two-Source Energy Balance (TSEB) model that estimates land-surface CO 2 and energy fluxes using an analytical, light-use-efficiency (LUE) based model of canopy resistance. Day to day variations in nominal LUE (LUE n) were assessed for a corn crop field in Maryland U.S.A. through model calibration with CO 2 flux tower observations. The optimized daily LUE n values were then compared to estimates of C ab integrated from gridded maps of chlorophyll content weighted over the tower flux source area. Changes in C ab exhibited a curvilinear relationship with corresponding changes in daily calibrated LUE n values derived from the tower flux data, and hourly water, energy and carbon flux estimation accuracies from TSEB were significantly improved when using C ab for delineating spatio-temporal variations in LUE n. The results demonstrate the synergy between thermal infrared and shortwave reflective wavebands in producing valuable remote sensing data for monitoring of carbon and water fluxes.",

keywords = "Carbon flux, Leaf chlorophyll, Light use efficiency, Reflective shortwave, Thermal infrared",

author = "Rasmus Houborg and Martha Anderson and Bill Kustas and Matthew Rodell",

year = "2010",

doi = "10.1109/IGARSS.2010.5651597",

language = "English (US)",

isbn = "9781424495658",

pages = "2648--2651",

booktitle = "2010 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010",

note = "2010 30th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010 ; Conference date: 25-07-2010 Through 30-07-2010",

}

Houborg, R, Anderson, M, Kustas, B & Rodell, M 2010, Combining observations in the reflective solar and thermal domains for improved mapping of carbon, water and energy fluxes. in 2010 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010., 5651597, pp. 2648-2651, 2010 30th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010, Honolulu, HI, United States, 07/25/10. https://doi.org/10.1109/IGARSS.2010.5651597

Combining observations in the reflective solar and thermal domains for improved mapping of carbon, water and energy fluxes. / Houborg, Rasmus; Anderson, Martha; Kustas, Bill et al.
2010 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010. 2010. p. 2648-2651 5651597.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Combining observations in the reflective solar and thermal domains for improved mapping of carbon, water and energy fluxes

AU - Houborg, Rasmus

AU - Anderson, Martha

AU - Kustas, Bill

AU - Rodell, Matthew

PY - 2010

Y1 - 2010

N2 - This study investigates the utility of integrating remotely sensed estimates of leaf chlorophyll (C ab) into a thermal-based Two-Source Energy Balance (TSEB) model that estimates land-surface CO 2 and energy fluxes using an analytical, light-use-efficiency (LUE) based model of canopy resistance. Day to day variations in nominal LUE (LUE n) were assessed for a corn crop field in Maryland U.S.A. through model calibration with CO 2 flux tower observations. The optimized daily LUE n values were then compared to estimates of C ab integrated from gridded maps of chlorophyll content weighted over the tower flux source area. Changes in C ab exhibited a curvilinear relationship with corresponding changes in daily calibrated LUE n values derived from the tower flux data, and hourly water, energy and carbon flux estimation accuracies from TSEB were significantly improved when using C ab for delineating spatio-temporal variations in LUE n. The results demonstrate the synergy between thermal infrared and shortwave reflective wavebands in producing valuable remote sensing data for monitoring of carbon and water fluxes.

AB - This study investigates the utility of integrating remotely sensed estimates of leaf chlorophyll (C ab) into a thermal-based Two-Source Energy Balance (TSEB) model that estimates land-surface CO 2 and energy fluxes using an analytical, light-use-efficiency (LUE) based model of canopy resistance. Day to day variations in nominal LUE (LUE n) were assessed for a corn crop field in Maryland U.S.A. through model calibration with CO 2 flux tower observations. The optimized daily LUE n values were then compared to estimates of C ab integrated from gridded maps of chlorophyll content weighted over the tower flux source area. Changes in C ab exhibited a curvilinear relationship with corresponding changes in daily calibrated LUE n values derived from the tower flux data, and hourly water, energy and carbon flux estimation accuracies from TSEB were significantly improved when using C ab for delineating spatio-temporal variations in LUE n. The results demonstrate the synergy between thermal infrared and shortwave reflective wavebands in producing valuable remote sensing data for monitoring of carbon and water fluxes.

KW - Carbon flux

KW - Leaf chlorophyll

KW - Light use efficiency

KW - Reflective shortwave

KW - Thermal infrared

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DO - 10.1109/IGARSS.2010.5651597

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AN - SCOPUS:78650913090

SN - 9781424495658

SN - 9781424495665

SP - 2648

EP - 2651

BT - 2010 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010

T2 - 2010 30th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010

Y2 - 25 July 2010 through 30 July 2010

ER -

Combining observations in the reflective solar and thermal domains for improved mapping of carbon, water and energy fluxes

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Keywords

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