d4.1 product validation & intercomparison report (pvir) · pdf filed4.1 product validation &...

ESA UNCLASSIFIED - For Official Use
Sea Ice Climate Change Initiative: Phase 2
D4.1 Product Validation &
Intercomparison Report (PVIR)
Doc Ref: SICCI-PVIR
Version: 1.0
Date: 8 Feb 2017

Product Validation & Intercomparison Report (PVIR)
Ref. SICCI-PVIR
Version 1. / 8 Feb 2017
page 2 of 59
Change Record Issue Date Reason for Change Author
PVIR_P2 1.0.D
10 January 2017 First draft of PVIR_P2_v1.0 Stefan Kern
January 26 2017 Added SIC0 results Stefan Kern
February 06 2017 Added SIC1 results Stefan Kern
February 08 2017 Completed scientific content; added input from Henriette
Stefan Kern, Henriette Skourup
Authorship Role Name Signature
Written by: Stefan Kern, Henriette Skourup
Checked by: Gary Timms
Approved by:
Authorised by:
Distribution Organisation Names Contact Details
ESA Pascal Lecomte [email protected]
NERSC Stein Sandven, Lasse H. Pettersson
[email protected]; [email protected]
CGI (previously Logica) Gary Timms [email protected]
Met.no Thomas Lavergne, Lars Anders Breivik
DMI Leif Toudal Pedersen, Rasmus Tonboe
DTU Roberto Saldo, Ren Forsberg, Henning Skriver, Henriette Skourup
[email protected]; [email protected]; [email protected] [email protected]
FMI Marko Mkynen, Eero Rinne, Ari Seina
[email protected]; [email protected]; [email protected]
University of Hamburg Stefan Kern [email protected]
University of Bremen Georg Heygster [email protected]
MPI-M Dirk Notz [email protected]

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Organisation Names Contact Details
Ifremer Fanny Ardhuin [email protected]

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Table of Contents
1 Introduction ....................................................................................... 7 1.1 Purpose and Scope ....................................................................... 7 1.2 Document Structure ..................................................................... 7 1.3 Document Status ......................................................................... 7 1.4 Applicable Documents ................................................................... 7 1.5 Reference Documents ................................................................... 7 1.1 Acronyms and Abbreviations ........................................................ 11
2 Preface ............................................................................................. 13
3 Sea Ice Concentration ...................................................................... 14 3.1 SIC prototype product health check ............................................... 15 3.2 Sea Ice Concentration Validation: 0% and 100% .............................. 16 3.3 Sea Ice Concentration validation with optical data ............................ 25 3.4 SICCI SIC versus MODIS melt pond fraction & sea ice concentration .... 27 3.5 SICCI SIC versus ASPeCt and IceWatch/ASSIST ship-based sea-ice
observations ............................................................................. 28 3.6 SICCI 2 unfiltered sea ice concentrations ........................................ 33 3.7 SICCI 2 sea-ice concentration uncertainties ..................................... 34 3.8 Correlation length analysis for SIC and SIC uncertainties ................... 41
4 Sea Ice Thickness ............................................................................. 42 4.1 Evaluation of the SICCI 2 freeboard product .................................... 43 4.2 SIT validation with direct (in situ) measurements ............................. 45 4.3 SIT validation with EM observations ............................................... 46 4.4 SIT validation with moored ULS .................................................... 47 4.5 SIT validation with submarine ULS ................................................ 49 4.6 SIT validation with independent satellite data .................................. 50 4.7 Evaluation against ship-based sea-ice thickness estimates ................. 51 4.8 Investigation of the long-term evolution ......................................... 52
5 Summary .......................................................................................... 54
6 Appendix-A ....................................................................................... 56

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List of Figures
Es konnten keine Eintrge fr ein Abbildungsverzeichnis gefunden werden.

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List of Tables
Table 1-1: Applicable Documents ........................................................................ 7
Table 1-2: Reference Documents ...................................................................... 11
Table 1-3: Acronyms ...................................................................................... 12

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1 Introduction
1.1 Purpose and Scope
This document informs about the results of the validation and inter-comparison of the SICCI project Phase 2 sea ice concentration (SIC, released in December 2016) and sea ice thickness (SIT, to be released in 2017) data sets.
1.2 Document Structure
After this introduction and the list of references, the document is divided into two sections that describe the Sea Ice Concentration and the Sea Ice Thickness validation and inter-comparison efforts.
1.3 Document Status
This is the first issue released to ESA as part of the projects contractual deliverable set.
1.4 Applicable Documents
The following table lists the Applicable Documents that have a direct impact on the contents of this document.
Acronym Title Reference Issue
AD-1 Sea Ice ECV Project Management Plan
ESA-CCI_SICCI_PMP_D6.1_v1.1 1.1
Table 1-1: Applicable Documents
1.5 Reference Documents
RD-01 Algorithm Theoretical Basis Document (ATBDv1)
Pedersen, L. T., et al.
v2.0, March 2016
RD-02 Product Validation Plan (PVP)
Laxon, S., and L. T. Pedersen, SICCI-PVP-05-12
v1.1, Sep 2012
RD-03 Data Access Requirement Document (DARD)
Kern, S., SICCI-P2-DARD-08-15
v2.0, Sep 2015
RD-04 Round Robin Data Package for SICCI 2 SIC
Pedersen, L.T., et al.,
RD-05 Round Robin Data Package for SICCI 2 SIT
Skourup, H., et al.,

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RD-06 Product Validation and Intercomparison Report for SICCI 1
Kern, S., et al., ESA-CCI-SICCI-PVIR
V1.1, Feb 2015
RD-07 Revised Landsat-5 Thematic Mapper Radiometric Calibration
Chander, G., B. L. Markham, and J. A. Barsi, IEEE Geoscience and Remote Sensing Letters, 4(3), 490-494, 2007
n.a.
RD-08 Summary of current radiometric calibration coefficients for Landsat MSS, TM, ETM+, and EO-1 ALI sensors
Chander, G., B. L. Markham, and D. L. Helder, Remote Sensing of Environment, 113, 893-903, 2009
n.a.
RD-09 Removal of Atmospheric Effects from AVHRR albedos
Koepke, P., Journal of Applied Meteorology, 28, 1341-1348, 1989
n.a.
RD-10 Comparison of Landsat TM-derived and ground-based albedos of Haut Glacier dArolla, Switzerland
Knap, W. H., B. W. Brock, J. Oerlemans, and I. C. Willis, International Journal of Remote Sensing, 20(17), 3293-3310, 1999
n.a.
RD-11 Surface Albedo of the Antarctic sea ice zone
Brandt, R. E., S. G. Warren, A. P. Worby, and T. C. Grenfell, Journal of Climate, 18, 3606-3622, 2005
n.a.
RD-12 Melt ponds on Arctic sea ice determined from MODIS satellite data using an artificial neural network
Rsel, A., L. Kaleschke, and G. Birnbaum, The Cryosphere, 6, 431-445, doi:10.5194/tc-6-431-2012, 2012
n.a.
RD-13 On the estimation of melt pond fraction on the Arctic sea ice with ENVISAT WSM images
Mkynen, M., S. Kern, A. Rsel, and L.T. Pedersen, IEEE Transactions on Geoscience and Remote Sensing, 52(11), doi:10.1109/TGRS.2014.2311476, 2014
n.a.

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RD-14 The impact of melt ponds on summertime microwave bright