Quikscat backscatter sensitivity to landscape freeze/thaw state over ALECTRA sites in Alaska from 2000 to 2007: Application to SMAP validation planning

Andreas Colliander; Kyle McDonald; Reiner Zimmermann; Thomas Linke; Ronny Schroeder; John Kimball; Eni Njoku

doi:10.1109/IGARSS.2010.5652955

Quikscat backscatter sensitivity to landscape freeze/thaw state over ALECTRA sites in Alaska from 2000 to 2007: Application to SMAP validation planning

Andreas Colliander
, Kyle McDonald
, Reiner Zimmermann
, Thomas Linke
, Ronny Schroeder
, John Kimball
, Eni Njoku

Numerical Terradynamic Simulation Group

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

3 Scopus citations

Abstract

The mapping of freeze/thaw state of the landscape is one of the main objectives of NASA's upcoming SMAP (Soil Moisture Active and Passive) mission. This study applies ALECTRA (Alaska Ecological Transect) biophysical network and QuikSCAT scatterometer data to evaluate some of the validation issues regarding the SMAP freeze/thaw measurements. Although the QuikSCAT data is at Ku-band frequency, rather than the L-band of the SMAP instrument, the data is utilized due to its uniquely high temporal resolution over the ALECTRA sites. The results show that multiple temperature measurements representative of individual landscape (soil, snow cover, vegetation and atmosphere) elements and spatial heterogeneity within the satellite field-of-view are important for understanding the radar backscatter process and aggregate freeze/thaw signal. The backscatter temporal dynamics and relative contribution of these landscape elements to the freeze-thaw signal varies with land cover type, seasonal weather and climate conditions.

Original language	English
Title of host publication	2010 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1269-1272
Number of pages	4
ISBN (Print)	9781424495658, 9781424495665
DOIs	https://doi.org/10.1109/IGARSS.2010.5652955
State	Published - 2010
Event	2010 30th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010 - Honolulu, United States Duration: Jul 25 2010 → Jul 30 2010

Publication series

Name	International Geoscience and Remote Sensing Symposium (IGARSS)

Conference

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

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 13 Climate Action

Keywords

ALECTRA
Freeze/thaw state
QuikSCAT
SMAP

Access to Document

10.1109/IGARSS.2010.5652955

Cite this

Colliander, A., McDonald, K., Zimmermann, R., Linke, T., Schroeder, R., Kimball, J., & Njoku, E. (2010). Quikscat backscatter sensitivity to landscape freeze/thaw state over ALECTRA sites in Alaska from 2000 to 2007: Application to SMAP validation planning. In 2010 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010 (pp. 1269-1272). Article 5652955 (International Geoscience and Remote Sensing Symposium (IGARSS)). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/IGARSS.2010.5652955

Colliander, Andreas ; McDonald, Kyle ; Zimmermann, Reiner et al. / Quikscat backscatter sensitivity to landscape freeze/thaw state over ALECTRA sites in Alaska from 2000 to 2007 : Application to SMAP validation planning. 2010 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010. Institute of Electrical and Electronics Engineers Inc., 2010. pp. 1269-1272 (International Geoscience and Remote Sensing Symposium (IGARSS)).

@inproceedings{7ca629bec9c54d5a8bb372eaddd0a0a7,

title = "Quikscat backscatter sensitivity to landscape freeze/thaw state over ALECTRA sites in Alaska from 2000 to 2007: Application to SMAP validation planning",

abstract = "The mapping of freeze/thaw state of the landscape is one of the main objectives of NASA's upcoming SMAP (Soil Moisture Active and Passive) mission. This study applies ALECTRA (Alaska Ecological Transect) biophysical network and QuikSCAT scatterometer data to evaluate some of the validation issues regarding the SMAP freeze/thaw measurements. Although the QuikSCAT data is at Ku-band frequency, rather than the L-band of the SMAP instrument, the data is utilized due to its uniquely high temporal resolution over the ALECTRA sites. The results show that multiple temperature measurements representative of individual landscape (soil, snow cover, vegetation and atmosphere) elements and spatial heterogeneity within the satellite field-of-view are important for understanding the radar backscatter process and aggregate freeze/thaw signal. The backscatter temporal dynamics and relative contribution of these landscape elements to the freeze-thaw signal varies with land cover type, seasonal weather and climate conditions.",

keywords = "ALECTRA, Freeze/thaw state, QuikSCAT, SMAP",

author = "Andreas Colliander and Kyle McDonald and Reiner Zimmermann and Thomas Linke and Ronny Schroeder and John Kimball and Eni Njoku",

year = "2010",

doi = "10.1109/IGARSS.2010.5652955",

language = "English",

isbn = "9781424495658",

series = "International Geoscience and Remote Sensing Symposium (IGARSS)",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

pages = "1269--1272",

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",

}

Colliander, A, McDonald, K, Zimmermann, R, Linke, T, Schroeder, R, Kimball, J & Njoku, E 2010, Quikscat backscatter sensitivity to landscape freeze/thaw state over ALECTRA sites in Alaska from 2000 to 2007: Application to SMAP validation planning. in 2010 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010., 5652955, International Geoscience and Remote Sensing Symposium (IGARSS), Institute of Electrical and Electronics Engineers Inc., pp. 1269-1272, 2010 30th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010, Honolulu, United States, 07/25/10. https://doi.org/10.1109/IGARSS.2010.5652955

Quikscat backscatter sensitivity to landscape freeze/thaw state over ALECTRA sites in Alaska from 2000 to 2007: Application to SMAP validation planning. / Colliander, Andreas; McDonald, Kyle; Zimmermann, Reiner et al.
2010 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010. Institute of Electrical and Electronics Engineers Inc., 2010. p. 1269-1272 5652955 (International Geoscience and Remote Sensing Symposium (IGARSS)).

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

TY - GEN

T1 - Quikscat backscatter sensitivity to landscape freeze/thaw state over ALECTRA sites in Alaska from 2000 to 2007

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

AU - Colliander, Andreas

AU - McDonald, Kyle

AU - Zimmermann, Reiner

AU - Linke, Thomas

AU - Schroeder, Ronny

AU - Kimball, John

AU - Njoku, Eni

PY - 2010

Y1 - 2010

N2 - The mapping of freeze/thaw state of the landscape is one of the main objectives of NASA's upcoming SMAP (Soil Moisture Active and Passive) mission. This study applies ALECTRA (Alaska Ecological Transect) biophysical network and QuikSCAT scatterometer data to evaluate some of the validation issues regarding the SMAP freeze/thaw measurements. Although the QuikSCAT data is at Ku-band frequency, rather than the L-band of the SMAP instrument, the data is utilized due to its uniquely high temporal resolution over the ALECTRA sites. The results show that multiple temperature measurements representative of individual landscape (soil, snow cover, vegetation and atmosphere) elements and spatial heterogeneity within the satellite field-of-view are important for understanding the radar backscatter process and aggregate freeze/thaw signal. The backscatter temporal dynamics and relative contribution of these landscape elements to the freeze-thaw signal varies with land cover type, seasonal weather and climate conditions.

AB - The mapping of freeze/thaw state of the landscape is one of the main objectives of NASA's upcoming SMAP (Soil Moisture Active and Passive) mission. This study applies ALECTRA (Alaska Ecological Transect) biophysical network and QuikSCAT scatterometer data to evaluate some of the validation issues regarding the SMAP freeze/thaw measurements. Although the QuikSCAT data is at Ku-band frequency, rather than the L-band of the SMAP instrument, the data is utilized due to its uniquely high temporal resolution over the ALECTRA sites. The results show that multiple temperature measurements representative of individual landscape (soil, snow cover, vegetation and atmosphere) elements and spatial heterogeneity within the satellite field-of-view are important for understanding the radar backscatter process and aggregate freeze/thaw signal. The backscatter temporal dynamics and relative contribution of these landscape elements to the freeze-thaw signal varies with land cover type, seasonal weather and climate conditions.

KW - ALECTRA

KW - Freeze/thaw state

KW - QuikSCAT

KW - SMAP

UR - https://www.scopus.com/pages/publications/78650865066

U2 - 10.1109/IGARSS.2010.5652955

DO - 10.1109/IGARSS.2010.5652955

M3 - Conference contribution

AN - SCOPUS:78650865066

SN - 9781424495658

SN - 9781424495665

T3 - International Geoscience and Remote Sensing Symposium (IGARSS)

SP - 1269

EP - 1272

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

PB - Institute of Electrical and Electronics Engineers Inc.

Y2 - 25 July 2010 through 30 July 2010

ER -

Colliander A, McDonald K, Zimmermann R, Linke T, Schroeder R, Kimball J et al. Quikscat backscatter sensitivity to landscape freeze/thaw state over ALECTRA sites in Alaska from 2000 to 2007: Application to SMAP validation planning. In 2010 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2010. Institute of Electrical and Electronics Engineers Inc. 2010. p. 1269-1272. 5652955. (International Geoscience and Remote Sensing Symposium (IGARSS)). doi: 10.1109/IGARSS.2010.5652955

Quikscat backscatter sensitivity to landscape freeze/thaw state over ALECTRA sites in Alaska from 2000 to 2007: Application to SMAP validation planning

Abstract

Publication series

Conference

UN SDGs

Keywords

Access to Document

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