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33 results on '"Bonekamp, Hans"'

2. AN INTRODUCTION TO THE EUMETSAT POLAR SYSTEM

Author

Klaes, K. Dieter, Cohen, Marc, Buhler, Yves, Schlüssel, Peter, Munro, Rosemary, Luntama, Juha-Pekka, von Engeln, Axel, Clérigh, Eoin Ó, Bonekamp, Hans, Ackermann, Jörg, and Schmetz, Johannes

Published
2007

3. Observing Systems Needed to Address Sea-Level Rise and Variability

Author

Wilson, W. Stanley, primary, Abdalati, Waleed, additional, Alsdorf, Douglas, additional, Benveniste, Jérôme, additional, Bonekamp, Hans, additional, Cogley, J. Graham, additional, Drinkwater, Mark R., additional, Fu, Lee-Lueng, additional, Gross, Richard, additional, Haines, Bruce J., additional, Harrison, D. E., additional, Johnson, Gregory C., additional, Johnson, Michael, additional, LaBrecque, John L., additional, Lindstrom, Eric J., additional, Merrifield, Mark A., additional, Miller, Laury, additional, Pavlis, Erricos C., additional, Piotrowicz, Stephen, additional, Roemmich, Dean, additional, Stammer, Detlef, additional, Thomas, Robert H., additional, Thouvenot, Eric, additional, and Woodworth, Philip L., additional

Published
2010
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13. The Ocean Surface Topography Constellation: The Next 15 Years in Satellite Altimetry

Author

NAVAL RESEARCH LAB STENNIS DETACHMENT STENNIS SPACE CENTER MS OCEANOGRAPHY DIV, Wilson, Stan, Parisot, Francois, Escudier, Philippe, Fellous, Jean-Louis, Benveniste, Jerome, Bonekamp, Hans, Drinkwater, Mark, Fu, Lee, Jacobs, Gregg, Lin, Mingsen, NAVAL RESEARCH LAB STENNIS DETACHMENT STENNIS SPACE CENTER MS OCEANOGRAPHY DIV, Wilson, Stan, Parisot, Francois, Escudier, Philippe, Fellous, Jean-Louis, Benveniste, Jerome, Bonekamp, Hans, Drinkwater, Mark, Fu, Lee, Jacobs, Gregg, and Lin, Mingsen

Abstract

An overriding issue facing the altimetry community today is sustaining the present observational capability. In Europe and the United States this involves transitioning altimetry as a research endeavor within the R&D agencies into a sustained capability within their operational counterparts. Additionally, meeting operational and scientific objectives requires multiple missions, namely, a constellation. Requirements for such a constellation in the near-term include maintaining continuity of the low-inclination, Jason-class altimeter series to serve as a reference mission, and at the same time altimeters on at least two, preferably three, satellites in complementary high-inclination orbits. The first is needed to address the role of the oceans in climate, while together they address mesoscale variability or ocean weather. For the longer term, capabilities are needed which feature denser sampling via the development and demonstration of new techniques, one example being wide-swath altimetry. Recognizing the need for coordination, the Ocean Surface Topography Virtual Constellation (OST VC) has been established to maximize synergy among the existing and near-term missions. This includes promoting a data policy that enables full and open sharing of data with timely access for all.

Published
2012

14. Transitions Towards Operational Space-Based Ocean Observations: From Single Research Missions into Series and Constellations

Author

NAVAL RESEARCH LAB STENNIS SPACE CENTER MS OCEANOGRAPHY DIV, Bonekamp, Hans, Parisot, Francois, Wilson, Stan, Miller, Laury, Donlon, Craig, Drinkwater, Mark, Lindstrom, Eric, Fu, Lee, Thouvenot, Eric, Lambin, Juliette, Nakagawa, Keizo, NAVAL RESEARCH LAB STENNIS SPACE CENTER MS OCEANOGRAPHY DIV, Bonekamp, Hans, Parisot, Francois, Wilson, Stan, Miller, Laury, Donlon, Craig, Drinkwater, Mark, Lindstrom, Eric, Fu, Lee, Thouvenot, Eric, Lambin, Juliette, and Nakagawa, Keizo

Abstract

This paper discussed aspects of the development of operational satellite programmes for oceanography. In particular, it explains transitioning of key ocean missions from research to a sustained operational context. Successes over the last decade are highlighted as well as challenges for the decades to come., Work no. 73-8677-B8-5

Published
2011

15. Observing systems needed to address sea-level rise and variability

Author

Church, John A., Woodworth, Philip L., Aarup, Thorkild, Wilson, W. Stanley, Abdalati, Waleed, Alsdorf, Douglas, Benveniste, Jerome, Bonekamp, Hans, Cogley, J. Graham, Drinkwater, Mark R., Fu, Lee-Lueng, Gross, Richard, Haines, Bruce J., Harrison, D. E., Johnson, Gregory C., Johnson, Michael, LaBrecque, John L., Lindstrom, Eric J., Merrifield, Mark A., Miller, Laury, Pavlis, Erricos C., Piotrowicz, Stephen, Roemmich, Dean, Stammer, Detlef, Thomas, Robert H., Thouvenot, Eric, Church, John A., Woodworth, Philip L., Aarup, Thorkild, Wilson, W. Stanley, Abdalati, Waleed, Alsdorf, Douglas, Benveniste, Jerome, Bonekamp, Hans, Cogley, J. Graham, Drinkwater, Mark R., Fu, Lee-Lueng, Gross, Richard, Haines, Bruce J., Harrison, D. E., Johnson, Gregory C., Johnson, Michael, LaBrecque, John L., Lindstrom, Eric J., Merrifield, Mark A., Miller, Laury, Pavlis, Erricos C., Piotrowicz, Stephen, Roemmich, Dean, Stammer, Detlef, Thomas, Robert H., and Thouvenot, Eric

Published
2010

16. Preface

Author

Lillibridge, John, primary, Bonekamp, Hans, additional, Willis, Josh, additional, and Bonnefond, Pascal, additional

Published
2012
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19. Transitions Towards Operational Space Based Ocean Observations: From Single Research Missions into Series and Constellations

Author

Bonekamp, Hans, primary, Parisot, Francois, additional, Wilson, Stan, additional, Miller, Laury, additional, Donlon, Craig, additional, Drinkwater, Mark, additional, Lindstrom, Eric, additional, Fu, Lee, additional, Thouvenot, Eric, additional, Lambin, Juliette, additional, Nakagawa, Keizo, additional, Gohil, B.S., additional, Lin, Mingsen, additional, Yoder, James, additional, Le Traon, Pierre-Yves, additional, and Jacobs, Gregg, additional

Published
2010
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20. The OSTM/Jason-2 Mission

Author

Lambin, Juliette, primary, Morrow, Rosemary, additional, Fu, Lee-Lueng, additional, Willis, Josh K., additional, Bonekamp, Hans, additional, Lillibridge, John, additional, Perbos, Jacqueline, additional, Zaouche, Gérard, additional, Vaze, Parag, additional, Bannoura, Walid, additional, Parisot, François, additional, Thouvenot, Eric, additional, Coutin-Faye, Sophie, additional, Lindstrom, Eric, additional, and Mignogno, Mike, additional

Published
2010
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22. An Overview of Global Observing Systems Relevant to GODAE

Author

Clark, Candyce, primary, Harrison, D.E., additional, Johnson, Mike, additional, Ball, Graeme, additional, Freeland, Howard, additional, Goni, Gustavo, additional, Hood, Maria, additional, McPhaden, Michael, additional, Meldrum, David, additional, Merrifield, Mark, additional, Roemmich, Dean, additional, Sabine, Chris, additional, Send, Uwe, additional, Weller, Robert, additional, Wilson, Stan, additional, Benveniste, Jerome, additional, Bonekamp, Hans, additional, Donlon, Craig, additional, Drinkwater, Mark, additional, Fellous, Jean-Louis, additional, Gohil, B.S., additional, Jacobs, Gregg, additional, Le Traon, Pierre-Yves, additional, Lindstrom, Eric, additional, Mingsen, Lin, additional, Nakagawa, Keizo, additional, and Parisot, François, additional

Published
2009
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23. Day-2 product developments for Metop-A

Author

Klaes, K. Dieter, primary, Ackermann, Jörg, additional, Munro, Rosemary, additional, von Engeln, Axel, additional, Bonekamp, Hans, additional, Anderson, Craig, additional, Schlüssel, Peter, additional, August, Thomas, additional, Oduleye, Olusoji, additional, and Schmetz, Johannes, additional

Published
2009
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33. Validation and Calibration of ASCAT Using CMOD5.n.

Author

Verspeek, Jeroen, Stoffelen, Ad, Portabella, Marcos, Bonekamp, Hans, Anderson, Craig, and Saldaña, Julia Figa

Subjects
TRANSPONDERS, REMOTE sensing, WIND speed, ANTENNAS (Electronics), METEOROLOGY
Abstract

The Advanced Scatterometer (ASCAT) onboard the Metop-A satellite became operational shortly after launch in 2006, and an absolute calibration using three transponders was achieved in November 2008. In this paper, we describe how the CMOD5.n ocean backscatter geophysical model function (GMF), which was derived using data from previous scatterometers onboard the European Remote Sensing 1 and 2 satellites (ERS-1 and ERS-2), was used to derive backscatter bias correction factors. The purpose is to remove the bias between ASCAT backscatter data and the CMOD5.n GMF output which allows these data to be used in place of ERS data in existing wind processing algorithms. The ASCAT Wind Data Processor, developed at the Royal Netherlands Meteorological Institute (KNMI), applies the bias correction factors to ASCAT data and uses CMOD5.n to retrieve wind vectors in order to produce an operational wind product. This resulted in a stable and high-quality ASCAT wind product since February 2007. We validate this product by comparing it to the European Centre for Medium-range Weather Forecasts (ECMWF) winds and buoy measurements. The bias correction factors indicate that ASCAT data and the GMF differ by roughly 0.3 dB below 55° and up to 0.8 dB above 55°. A possible explanation lies in CMOD5.n which has been poorly validated in this incidence angle regime. Validation of ASCAT data using the ocean calibration method confirms this result and also indicates that bias-corrected data are everywhere within 0.3 dB of CMOD5.n. The wind product validation shows an rms error of 1.3 m ⋅ s-1 in wind speed and 16° in wind direction when compared to ECMWF winds. This is better than the results achieved using ERS scatterometer data. Against buoy winds, we find an rms error wind component error of approximately 1.8 m ⋅ s-1. These results show that the ASCAT wind product is of high quality and satisfies its wind component accuracy requirement of 2 m ⋅ s-1. [ABSTRACT FROM AUTHOR]

Published
2010
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