Combining altimetric/gravimetric and ocean model mean dynamic topography models in the GOCINA region

Per Knudsen; Ole B. Andersen; René Forsberg; Henning P. Föh; Arne V. Olesen; Anne L. Vest; Dag Solheim; Ove D. Omang; Roger Hipkin; Addisu Hunegnaw; Keith Haines; Rory Bingham; Jean Philippe Drecourt; Johnny A. Johannessen; Helge Drange; Frank Siegismund; Fabrice Hernandez; Gilles Larnicol; Marie Helene Rio; Philippe Schaeffer

doi:10.1007/978-3-540-49350-1_1

Combining altimetric/gravimetric and ocean model mean dynamic topography models in the GOCINA region

Per Knudsen, Ole B. Andersen, René Forsberg, Henning P. Föh, Arne V. Olesen, Anne L. Vest, Dag Solheim, Ove D. Omang, Roger Hipkin, Addisu Hunegnaw, Keith Haines, Rory Bingham, Jean Philippe Drecourt, Johnny A. Johannessen, Helge Drange, Frank Siegismund, Fabrice Hernandez, Gilles Larnicol, Marie Helene Rio, Philippe Schaeffer

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

9 Citations (Scopus)

Abstract

Initially, existing mean dynamic topography (MDT) models were collected and reviewed. The models were corrected for the differences in averaging period using the annual anomalies computed from satellite altimetry. Then a composite MDT was derived as the mean value in each grid node together with a standard deviation to represent its error. A new synthetic MDT was obtained from the new mean sea surface (MSS) KMS04 combined with a regional geoid updated using GRACE gravity and gravimetric data from a recent airborne survey. Compared with the composite MDT the synthetic MDT showed very similar results. Then combination methods were tested for the computation of MDT models from gravity data and MSS data. Both a rigorous and an iterative combination method have been tested in the GOCINA region. At this stage, the iterative combination method with its efficient handling of large data sets covering the whole region appears to give the best solution. Naturally, the errors associated with the MDT can be obtained using the rigorous method only.

Original language	English
Title of host publication	Dynamic Planet
Subtitle of host publication	Monitoring and Understanding a Dynamic Planet with Geodetic and Oceanographic Tools - lAG Symposium
Pages	3-10
Number of pages	8
Volume	130
DOIs	https://doi.org/10.1007/978-3-540-49350-1_1
Publication status	Published - 1 Dec 2007
Event	IAG Symposium on Dynamic Planet: Monitoring and Understanding a Dynamic Planet with Geodetic and Oceanographic Tools - Cairns, QLD, Australia Duration: 22 Aug 2005 → 26 Aug 2005

Conference

Conference	IAG Symposium on Dynamic Planet: Monitoring and Understanding a Dynamic Planet with Geodetic and Oceanographic Tools
Country/Territory	Australia
City	Cairns, QLD
Period	22/08/05 → 26/08/05

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Knudsen, P., Andersen, O. B., Forsberg, R., Föh, H. P., Olesen, A. V., Vest, A. L., Solheim, D., Omang, O. D., Hipkin, R., Hunegnaw, A., Haines, K., Bingham, R., Drecourt, J. P., Johannessen, J. A., Drange, H., Siegismund, F., Hernandez, F., Larnicol, G., Rio, M. H., & Schaeffer, P. (2007). Combining altimetric/gravimetric and ocean model mean dynamic topography models in the GOCINA region. In Dynamic Planet: Monitoring and Understanding a Dynamic Planet with Geodetic and Oceanographic Tools - lAG Symposium (Vol. 130, pp. 3-10) https://doi.org/10.1007/978-3-540-49350-1_1

@inproceedings{0450208bc0024c9bb9fc4ec3a0063904,

title = "Combining altimetric/gravimetric and ocean model mean dynamic topography models in the GOCINA region",

abstract = "Initially, existing mean dynamic topography (MDT) models were collected and reviewed. The models were corrected for the differences in averaging period using the annual anomalies computed from satellite altimetry. Then a composite MDT was derived as the mean value in each grid node together with a standard deviation to represent its error. A new synthetic MDT was obtained from the new mean sea surface (MSS) KMS04 combined with a regional geoid updated using GRACE gravity and gravimetric data from a recent airborne survey. Compared with the composite MDT the synthetic MDT showed very similar results. Then combination methods were tested for the computation of MDT models from gravity data and MSS data. Both a rigorous and an iterative combination method have been tested in the GOCINA region. At this stage, the iterative combination method with its efficient handling of large data sets covering the whole region appears to give the best solution. Naturally, the errors associated with the MDT can be obtained using the rigorous method only.",

author = "Per Knudsen and Andersen, {Ole B.} and Ren{\'e} Forsberg and F{\"o}h, {Henning P.} and Olesen, {Arne V.} and Vest, {Anne L.} and Dag Solheim and Omang, {Ove D.} and Roger Hipkin and Addisu Hunegnaw and Keith Haines and Rory Bingham and Drecourt, {Jean Philippe} and Johannessen, {Johnny A.} and Helge Drange and Frank Siegismund and Fabrice Hernandez and Gilles Larnicol and Rio, {Marie Helene} and Philippe Schaeffer",

year = "2007",

month = dec,

day = "1",

doi = "10.1007/978-3-540-49350-1_1",

language = "English",

isbn = "9783540493495",

volume = "130",

pages = "3--10",

booktitle = "Dynamic Planet",

note = "IAG Symposium on Dynamic Planet: Monitoring and Understanding a Dynamic Planet with Geodetic and Oceanographic Tools ; Conference date: 22-08-2005 Through 26-08-2005",

}

Knudsen, P, Andersen, OB, Forsberg, R, Föh, HP, Olesen, AV, Vest, AL, Solheim, D, Omang, OD, Hipkin, R, Hunegnaw, A, Haines, K, Bingham, R, Drecourt, JP, Johannessen, JA, Drange, H, Siegismund, F, Hernandez, F, Larnicol, G, Rio, MH & Schaeffer, P 2007, Combining altimetric/gravimetric and ocean model mean dynamic topography models in the GOCINA region. in Dynamic Planet: Monitoring and Understanding a Dynamic Planet with Geodetic and Oceanographic Tools - lAG Symposium. vol. 130, pp. 3-10, IAG Symposium on Dynamic Planet: Monitoring and Understanding a Dynamic Planet with Geodetic and Oceanographic Tools, Cairns, QLD, Australia, 22/08/05. https://doi.org/10.1007/978-3-540-49350-1_1

Combining altimetric/gravimetric and ocean model mean dynamic topography models in the GOCINA region. / Knudsen, Per; Andersen, Ole B.; Forsberg, René et al.
Dynamic Planet: Monitoring and Understanding a Dynamic Planet with Geodetic and Oceanographic Tools - lAG Symposium. Vol. 130 2007. p. 3-10.

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

TY - GEN

T1 - Combining altimetric/gravimetric and ocean model mean dynamic topography models in the GOCINA region

AU - Knudsen, Per

AU - Andersen, Ole B.

AU - Forsberg, René

AU - Föh, Henning P.

AU - Olesen, Arne V.

AU - Vest, Anne L.

AU - Solheim, Dag

AU - Omang, Ove D.

AU - Hipkin, Roger

AU - Hunegnaw, Addisu

AU - Haines, Keith

AU - Bingham, Rory

AU - Drecourt, Jean Philippe

AU - Johannessen, Johnny A.

AU - Drange, Helge

AU - Siegismund, Frank

AU - Hernandez, Fabrice

AU - Larnicol, Gilles

AU - Rio, Marie Helene

AU - Schaeffer, Philippe

PY - 2007/12/1

Y1 - 2007/12/1

N2 - Initially, existing mean dynamic topography (MDT) models were collected and reviewed. The models were corrected for the differences in averaging period using the annual anomalies computed from satellite altimetry. Then a composite MDT was derived as the mean value in each grid node together with a standard deviation to represent its error. A new synthetic MDT was obtained from the new mean sea surface (MSS) KMS04 combined with a regional geoid updated using GRACE gravity and gravimetric data from a recent airborne survey. Compared with the composite MDT the synthetic MDT showed very similar results. Then combination methods were tested for the computation of MDT models from gravity data and MSS data. Both a rigorous and an iterative combination method have been tested in the GOCINA region. At this stage, the iterative combination method with its efficient handling of large data sets covering the whole region appears to give the best solution. Naturally, the errors associated with the MDT can be obtained using the rigorous method only.

AB - Initially, existing mean dynamic topography (MDT) models were collected and reviewed. The models were corrected for the differences in averaging period using the annual anomalies computed from satellite altimetry. Then a composite MDT was derived as the mean value in each grid node together with a standard deviation to represent its error. A new synthetic MDT was obtained from the new mean sea surface (MSS) KMS04 combined with a regional geoid updated using GRACE gravity and gravimetric data from a recent airborne survey. Compared with the composite MDT the synthetic MDT showed very similar results. Then combination methods were tested for the computation of MDT models from gravity data and MSS data. Both a rigorous and an iterative combination method have been tested in the GOCINA region. At this stage, the iterative combination method with its efficient handling of large data sets covering the whole region appears to give the best solution. Naturally, the errors associated with the MDT can be obtained using the rigorous method only.

UR - http://www.scopus.com/inward/record.url?scp=78249275610&partnerID=8YFLogxK

U2 - 10.1007/978-3-540-49350-1_1

DO - 10.1007/978-3-540-49350-1_1

M3 - Conference Contribution (Conference Proceeding)

AN - SCOPUS:78249275610

SN - 9783540493495

VL - 130

SP - 3

EP - 10

BT - Dynamic Planet

T2 - IAG Symposium on Dynamic Planet: Monitoring and Understanding a Dynamic Planet with Geodetic and Oceanographic Tools

Y2 - 22 August 2005 through 26 August 2005

ER -

Combining altimetric/gravimetric and ocean model mean dynamic topography models in the GOCINA region

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