Earth System Data Record of mass transport from time-variable gravity data Victor Zlotnicki 1, Matthieu Talpe 2, F. Lemoine 3, R. Steven Nerem 2, Felix.

Slides:

Advertisements

Similar presentations

Ice Sheets GNSS (GPS, GLONASS, Galileo, Beidou, QZSS) Matt King.

Advertisements

Some Hydrological and Cryospheric Applications of GRACE John Wahr (U of Colorado), Sean Swenson (NCAR), Isabella Velicogna (U of California at Irvine)

Present-Day Sea Level Change Present-Day Sea Level Change Assessment and Key Uncertainties Anny Cazenave Anny Cazenave LEGOS, Toulouse.

The ICESat-2 Mission: Laser altimetry of ice, clouds and land elevation T. Markus, T. Neumann NASA Goddard Space Flight Center W. Abdalati Earth Science.

POD/Geoid Splinter Summary OSTS Meeting, Hobart 2007.

MR P.Durkee 5/20/2015 MR3522Winter 1999 MR Remote Sensing of the Atmosphere and Ocean - Winter 1999 Active Microwave Radar.

2-3 November 2009NASA Sea Level Workshop1 The Terrestrial Reference Frame and its Impact on Sea Level Change Studies GPS VLBI John Ries Center for Space.

IceBridge Science Objectives The following are the major science objectives of Operation IceBridge in priority.

The Four Candidate Earth Explorer Core Missions Consultative Workshop October 1999, Granada, Spain, Revised by CCT GOCE S 43 Science and.

What's Happening in the Bathtub?: An Overview of Present-Day Sea Level Change R. Steven Nerem University of Colorado Department of Aerospace Engineering.

IceBridge Program Overview Tom Wagner IceBridge Program Scientist.

1 Observations. Sat05_71.ppt, Directions: satellite visible with stars as background. Direction to radio-source (VLBI) Directions and distances:

ICESat dH/dt Thinning Thickening ICESat key findings.

Time-depending validation of ocean mass anomalies from GRACE by means of satellite altimetry and numerical models Henryk Dobslaw and Maik Thomas GeoForschungsZentrum.

Cryospheric and Hydrologic Contributions to Global Sea Level Change M. Tamisiea Proudman Oceanographic Laboratory R. Steven Nerem University of Colorado.

Recent results from GRACE in Greenland and Antarctica Isabella Velicogna* and John Wahr** * ESS, University of California Irvine, Irvine CA ** Dept Of.

Climate Change in Earth’s Polar Regions

Global Sea Level Rise Laury Miller NOAA Lab for Satellite Altimetry.

Monitoring the Global Sea Level Rise Budget with Jason, Argo and GRACE Observations Eric Leuliette and Laury Miller NOAA/Laboratory for Satellite Altimetry.

Don P. Chambers Center for Space Research The University of Texas at Austin Understanding Sea-Level Rise and Variability 6-9 June, 2006 Paris, France The.

Using NASA Satellite and Modeling Resources for Monitoring Groundwater Availability and Variability for Monitoring Groundwater Availability and Variability.

J. Famiglietti 1, T. Syed 1, P. Yeh 1,2 and M. Rodell 3 1 Dept. of Earth System Science, University of California,Irvine, USA 2 now at: Institute of Industrial.

A Global Observing System for Monitoring and Prediction of Sea Level Change Lee-Lueng Fu COSPAR, 2014, Moscow Jet Propulsion Laboratory California Institute.

Monitoring Earths ice sheets from space Andrew Shepherd School of Geosciences, Edinburgh.

Using GRACE to estimate changes in land water storage: present limitations and future potential John Wahr, Sean Swenson, Isabella Velicogna University.

Last Time: Introduction to Gravity Governed by LaPlace’s equation: with solution of the form: If we have a spherical body with mass M and constant (or.

Center for Satellite Applications and Research (STAR) Review 09 – 11 March 2010 Image: MODIS Land Group, NASA GSFC March 2000 Center for Satellite Applications.

OC3522Summer 2001 OC Remote Sensing of the Atmosphere and Ocean - Summer 2001 Active Microwave Radar.

Toward closing the globally averaged sea level budget on seasonal to interannual time scales Josh K. Willis Jet Propulsion.

Space Geodesy (1/3) Geodesy provides a foundation for all Earth observations Space geodesy is the use of precise measurements between space objects (e.g.,

Hydrological mass changes inferred from high-low satellite- to-satellite tracking data Tonie van Dam, Matthias Weigelt Mohammad J. Tourian Nico Sneeuw.

IRI Workshop 2005 TEC Measurements with Dual-Frequency Space Techniques and Comparisons with IRI T. Hobiger, H. Schuh Advanced Geodesy, Institute of Geodesy.

Sea Level Change Measurements: Estimates from Altimeters Understanding Sea Level Rise and Variability June 6-9, 2006 Paris, France R. S. Nerem, University.

Thermosteric Effects on Long-Term Global Sea Level Change Jianli Chen Center for Space Research, University of Texas at Austin, USA

Gravity Satellite Data and Calculated Soil Moisture: A Mutual Validation (update) Huug van den Dool 1, Yun Fan 1, John Wahr 2 and Sean Swenson 2 1 Climate.

Ice Sheet Mass Changes and Contribution to Sea Level Rise  Greenland and Antarctic ice sheets were close to balance 1992 to  Net only 1% of annual.

GGOS User Requirements and Functional Specifications Richard S. Gross Jet Propulsion Laboratory, California Institute of Technology, Pasadena, USA Global.

The Sea Level Rise Story Bruno Tremblay McGill University Slide from Steven Nerem – University of Colorado.

©2010 Elsevier, Inc. 1 Chapter 14 Cuffey & Paterson.

Warm ocean is eroding WAIS 1 st OctoberWAIS 2004 Slide 1 Andrew Shepherd 1, Duncan Wingham 2, Eric Rignot 3 1 Scott Polar Research Institute 2 University.

(a) Pre-earthquake and (b) post-earthquake Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) images of North Sentinel Island. The.

Alaskan Mountain Glacial Melting Observed by GRACE 2006 WPGM, July , Beijing, China G32A-02 Wed. 11:05 AM J.L. Chen 1, B.D. Tapley 1, C.R. Wilson.

Water storage variations from time-variable gravity data Andreas Güntner Helmholtz Centre Potsdam - GFZ German Research Centre for Geosciences Section.

Seasonal Terrestrial Water Storage Change and Global Mean Sea Level Variation Jianli Chen 1 and Clark Wilson 1,2 Center for Space Research, The University.

SLR in the age of GPS Frank G. Lemoine, Scott B. Luthcke, Nikita P Zelensky Brian D. Beckley Code 697, Space Geodesy Laboratory NASA Goddard Space Flight.

CryoSat: ESA’s Ice Mission CryoSat: ESA’s Ice Mission Measuring change in the Earth’s ice fields Jérôme Benveniste slides from Mark R. Drinkwater & Richard.

Radar Altimeter Data Base System (RADS) -- producing a consistent set of climate-grade observations spanning multiple satellite missions Altimeter/Tide.

Investigating the role of ocean variability on recent polar ice sheet mass loss Ian Fenty Dimitris Menemenlis (JPL/Caltech) Eric Rignot (JPL/Caltech, UCI)

Polar Ice Sheets and Ice Shelves: Mass Balance, Uncertainties, and Potential Improvements Robert H Thomas…etc.

University of Kansas S. Gogineni, P. Kanagaratnam, R. Parthasarathy, V. Ramasami & D. Braaten The University of Kansas Wideband Radars for Mapping of Near.

A better GRACE solution for improving the regional Greenland mass balance Z Xu 1, E.J.O Schrama 1, W. van der. Wal 1 1 Department of Astrodynamics and.

An Overview of the Observations of Sea Level Change R. Steven Nerem University of Colorado Department of Aerospace Engineering Sciences Colorado Center.

Progress in Geoid Modeling from Satellite Missions

   Alys Thomas 1, J.T. Reager 1,2, Jay Famiglietti 1,2,3, Matt Rodell 4 1 Dept. of Earth System Science, 2 UC Center for Hydrologic Modeling, 3 Dept.

E. Schrama TU Delft, DEOS Error characteristics estimated from CHAMP, GRACE and GOCE derived geoids and from altimetry derived.

GRACE Science Team Meeting October 15-17, 2007 Potsdam Germany Alternative Gravity Field Representations: Solutions, Characteristics, and Issues Michael.

RIGTC, Geodetic Observatory Pecný The institute's mission is basic and applied research in geodesy and cadastre Designated institute of Czech Metrology.

Don Chambers Center for Space Research, The University of Texas at Austin Josh Willis Jet Propulsion Laboratory, California Institute of Technology R.

Center for Satellite Applications and Research (STAR) Review 09 – 11 March 2010 Image: MODIS Land Group, NASA GSFC March 2000 Closing the Global Sea Level.

Don P. Chambers College of Marine Science University of South Florida Measuring Mean Ocean Mass Variability with GRACE NASA Sea Level Workshop, Austin.

Ingo Sasgen 1, Henryk Dobslaw 1, Zdenek Martinec 2, and Maik Thomas 1 (1) GeoForschungsZentrum Potsdam, Department 1: Geodesy and Remote Sensing Section.

Global Ice Coverage Claire L. Parkinson NASA Goddard Space Flight Center Presentation to the Earth Ambassador program, meeting at NASA Goddard Space Flight.

OSTST Meeting, Hobart, Australia, March 12-15, 2007 On the use of temporal gravity field models derived from GRACE for altimeter satellite orbit determination.

J. Famiglietti with contributions from D. Chambers, K. Hilburn, S. Nerem, M. Rodell, T. Syed, S. Swenson, I. Velicogna, J. Wahr and J. Willis 2009 NASA.

The OC in GOCE: A review The Gravity field and Steady-state Ocean Circulation Experiment Marie-Hélène RIO.

Last Time: Introduction to Gravity Governed by LaPlace’s equation: with solution of the form: If we have a spherical body with mass M and constant (or.

Climate Science and Satellite Altimetry Meeting of the Committee on a Strategy to Mitigate the Impact of Sensor De-scopes and De-manifests on the NPOESS.

Annette Eicker GRACE and geophysical applications Annette Eicker Institute of Geodesy and Geoinformation University of Bonn TexPoint fonts used in EMF.

Gravity modeling of a salt diapir

WP 2.3 Change in mass balance of the Green-

Presentation transcript:

Earth System Data Record of mass transport from time-variable gravity data Victor Zlotnicki 1, Matthieu Talpe 2, F. Lemoine 3, R. Steven Nerem 2, Felix Landerer 1, Michael Watkins 1. 1 Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 2 Univ. of Colorado, Boulder, CO. 3 NASA Goddard Space Flight Ctr, Greenbelt, MD 1 JPL Document Clearance CL#

Gravity changes track water storage changes 2

Four ways to measure gravity from space satell tracking from earth (laser, doppler) (since 1975) high low sat sat tracking: GPS (since 1992) low-low sat-sat tracking GRACE (since 2002) gradiometry GOCE (mostly time-mean) ( ) 3 oldest newest

GRACE is best, why bother with others? GRACE has provided the highest resolution and accuracy estimates of time changes in water/ice, but need: to extend the time series in time before GRACE launch to patch a possible gap between GRACE and GRACE Follow-on 4

GPS + laser satellite tracking 1 M.Weigelt, T. Van Dam, et al, 2014, GRACE STM Mtg. 5

GPS + laser satellite tracking 2 6 M.Weigelt, T. Van Dam, et al, 2014, GRACE STM Mtg. wavelength ~ 40,000km/l 4,000 2,000 1,333 1, ~wavelength (km)

GPS + laser satellite tracking 3 7 K. Sosnica, A. Jaggi, M.Weigelt et al, 2014, GRACE STM Mtg.

DORIS + Laser satellite tracking 1 8 F. Lemoine, GSFC, 2014

DORIS + Laser satellite tracking EOF reconstruction 9

10 DORIS + Laser satellite tracking EOF reconstruction

11 DORIS + Laser satellite tracking EOF reconstruction Greenland

Differences in GRACE processing no instrument bias differences between different satellites, main diff is spatial resolution But, differences due to processing choices can have spatial patterns. Example: RMS difference between two GRACE processing centers, using the same underlying GRACE data 12

How to validate mass fluxes 1 Validation OCEAN – comp to bottom pressure recorders ( Boening, GRL 2008 ) – comp to altimetry-argo ( Chambers, Bonin 2012 ) – comp to ocean+data model ( Chambers, Bonin 2012 ) ICE – comp Greenland to SMB ( Velicogna 2014 ) – comp Amundsen SMB, Icesat, Envisat ( Velicogna 2015 ) LAND – comp to GPS deformation in Calif. ( Argus & Landerer, 2015 ) – comp to well data ( Swenson, 2008 ) 13

14 How to validate mass fluxes 2 Amundsen Sea Embayment, WAIS. 1)GRACE 2)mass budget method 3)Envisat radar altimetry 4)Icesat and airborne OIB laser altimetry Sutterley, Velicogna, et al GRL 2015 Bottom Pressure Recorder s, 8S, 125W ( Zlotnicki, Williams, Hughes, Boening, 2013 )

Summary, Discussion GRACE is the most accurate method to determine time-variable mass flux globally 2003 to 2015+, > km. GFO in The time series can be extended with GPS+SLR or Doris+SLR (or all 3), at lower spatial resolution > ~2,000-8,000km There are no biases introduced by the different satellites, but there can be systematic differences due to processing choices There are several methods to validate gravity-derived mass fluxes, but limited in space and time 15

BACKUP 16

Gravity data measures mass flux The longest wavelength, J2, measured since Glacial isostatic adjustment + Greenland and Antarctica ice sheet melt, measured by SLR. Greenland, Antarctica, glaciers ice mass loss measured by GRACE since 2003 Land total water content: GRACE Ocean mass and bottom pressure: GRACE 17 J2: Cheng, Tapley JGR 2013 Velicogna & Wahr, GRL 2013 Greenland ice mass

18 DORIS + Laser satellite tracking EOF reconstruction

Magnitude of orbit perturbations (hence sensitivity) diminishes with altitude. Sensitivity is not uniform across all coefficients of a given degree, especially given only SLR or DORIS tracking. Envisat has sensitivity to many terms at order 1 – but not all terms are separable from SLR+DORIS data alone on that satellite. (mm) Orbit Perturbations (mm) for SLR+DORIS satellites from effects of Time-Variable Gravity (Cryosat2, Envisat, Jason-2) Jason-2Envisat Cryosat-2 F. Lemoine, GSFC, 2014

Correlations of SLR+DORIS 5x5 solution with GRGS GRACE+Lageos solution ( ) C coefficientsS coefficients C20, C22, sectorals, match GRACE solutions well; For C31, C32 and coefficients at L=5, the agreement becomes less good. F. Lemoine, GSFC, 2014