ceres fm1 – fm5 instrument status · 2014-10-06 · ceres fm1 – fm5 instrument status susan...
TRANSCRIPT
CERES FM1 – FM5 Instrument Status
Susan Thomas CERES Instrument Working Group Team
Joint CERES, GERB and SCARAB Earth Radiation Budget Workshop Toulouse, France
October 7 - 10, 2014
Instrument Working Group
Science
-‐Susan Thomas– Janet Daniels
Phillip Hess
Mohan Shankar
G. Lou Smith
Nathaniel Smith
Nitchie Smith
Z. Peter Szewczyk
Robert Wilson
Data Management
-‐ Denise Cooper -‐
-‐ Dale Walikainen -‐ A. Thomas GrepioDs
Jeremie Lande
Dianne Snyder
Mission Opera7ons/I&T
-‐ William Vogler -‐
-‐ James Bailey -‐ Christopher Brown
John Butler
James Donaldson
William Edmonds
Carol Kelly
B. Mike Tafazoli
Roy Zalameda
CERES Instrument Working Group
WG Chair: Kory J. Priestley
CERES Instrument Opera7ons
CERES Instruments supported several intercomparison campaigns and special opera7ons in the past six months.
Terra/FM1 – Aqua/FM3 Intercomparison: June 1 – 30, 2014 Terra/FM1 – S-‐NPP/FM5 intercomparison: May 1 –July 31, 2014. Terra/FM2 – GERB Intercomparison: June 1 – 30, 2014 S-‐NPP/FM5 – Aqua/FM3 Comparison with Nadir Dwell: 6 sets Ar7c Radia7on – IceBridge Sea and Ice Experiment (ARISE) with
Terra/FM2: Aug 26 – Sept 30, 2014. 1/3 and ½ crosstrack scan rate with Terra/FM2: Sept 10-‐30, 2014
CERES Instrument Working Group
CERES Instrument Working Group
S-‐NPP/CERES FM5 INSTRUMENT STATUS
Suomi NPP/CERES FM5 Instrument Status
Sensor gain correc7ons based on ICM calibra7ons are applied to Edi7on1 data products.
CERES Instrument Working Group
The calibra7on and valida7on results show the instrument on-‐orbit performance are within the expected range during this period.
Suomi NPP/CERES FM5 Valida7on: Tropical Mean
CERES Instrument Working Group
Tropical Mean (TM): Average radiance of All-sky Tropical ocean(20oN-20oS) measurement TM Day-Night Difference (DN) is calculated from the measured LW radiances and LW value derived from the Window channel. Difference in the DN value is monitored to evaluate any changes that may occur in the shortwave region of the total sensor.
CERES FM5/FM3/FM1 Comparison: Tropical Mean
CERES Instrument Working Group
CERES FM5 – Global Flux Comparison (ES4) Comparison with CERES FM1 and FM3[Feb 12 – June 14]
CERES Instrument Working Group D. R. Walikainen
CERES FM5 -‐ FM3 Matched Footprint Comparisons
CERES Instrument Working Group
NPP and Aqua Simultaneous ObservaDon occur every 64 hours and last ~20 minutes with views about 20 seconds apart. Comparison based on 1o x1o grid averages with relaDve VZA <15 deg and RAZ < 10 deg. Each grid has 20 -‐25 footprints.
Z. P. Szewczyk
RelaDve difference for each matched 1°×1°grid Averaged unfiltered radiance for 1°×1°grid
CERES FM5 -‐ FM3 Matched Footprint Comparisons
CERES Instrument Working Group Z. P. Szewczyk
(FM5-FM3)/FM5 FM5 Radiance [W m-2 sr-1]
Relative Error [%]
α-confidence [95%]
Number of samples
Shortwave 79.10 3.15 0.45 99
LW daytime 75.04 -1.66 0.13 100
LW nighttime 66.78 -0.51 0.10 121
All-‐sky Results: February 2012 – April 2013; First repeat cycle of 432 days
Monthly SW differences
CERES FM5 -‐ FM3 Matched Footprint Comparisons
CERES Instrument Working Group
Analysis of SW differences
CERES Instrument Working Group
TERRA & AQUA INSTRUMENT STATUS [CERES FM1 – FM4]
Terra – Aqua Sensor Performance
CERES Instrument Working Group P.C. Hess, M. Shankar
TERRA/AQUA EDITION-‐4
CERES Instrument Working Group
• The Beginning of mission (BOM) radiometric gain and spectral response (SRF) were determined from pre-‐launch calibra7ons. In Edi7on-‐4, the BOM SRF for FM3 SW and SW/TOT sensors were revised based on shortwave characteriza7on data collected during ground tes7ng.
• A common radiometric scale is established for all CERES instruments with FM1 as the standard.
• Ground to flight sensor gain shie is incorporated based on Internal Calibra7on Module (ICM) tests from pre-‐launch and 1st month of in-‐flight calibra7on.
• The monthly gain values for the Total, Window and Shortwave sensors are based on the in-‐flight ICM calibra7ons.
• The SW sensor SRF for the instrument opera7ng in RAPS mode is corrected based on the func7onal form:
• The correc7ons applied to SW/TOT SRF is of the func7onal form
D(!) = [1! e!"! ]+#
D(!) = [1! e!"! ]
TERRA/AQUA EDITION-‐4 VALIDATION
CERES Instrument Working Group
2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014-3-2-10123
Flux
Ano
maly
ED4ED3
Anomaly of Terra XT SW TOA Flux (Global)
slope (per decade) = 0.0592695% conf = 0.28124
slope (per decade) = 0.0090395% conf = 0.28086
OCEAN
2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014-3-2-10123
Flux
Ano
maly
slope (per decade) = -0.7241095% conf = 0.38521
slope (per decade) = -0.7972795% conf = 0.38309
LAND
2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 YEAR
-3-2-10123
Flux
Ano
maly
ALL SCENES
slope (per decade) = -0.1060595% conf = 0.21801
slope (per decade) = -0.1638495% conf = 0.21642
TERRA/AQUA EDITION-‐4 VALIDATION
CERES Instrument Working Group
2002 2002 2003 2004 2005 2006 2007 2008 2008 2009 2010 2011 2012 2013 2014-3-2-10123
Flux
Ano
maly
ED4ED3
Anomaly of Aqua XT SW TOA Flux (Global)
slope (per decade) = 0.1412395% conf = 0.32892
slope (per decade) = 0.1798795% conf = 0.33014
OCEAN
2002 2002 2003 2004 2005 2006 2007 2008 2008 2009 2010 2011 2012 2013 2014-3-2-10123
Flux
Ano
maly
slope (per decade) = -0.5119695% conf = 0.48691
slope (per decade) = -0.5191595% conf = 0.48967
LAND
2002 2002 2003 2004 2005 2006 2007 2008 2008 2009 2010 2011 2012 2013 2014 YEAR
-3-2-10123
Flux
Ano
maly
ALL SCENES
slope (per decade) = -0.0106895% conf = 0.24205
slope (per decade) = 0.0096095% conf = 0.24253
TERRA/AQUA EDITION-‐4 VALIDATION
CERES Instrument Working Group
2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014-2.0-1.5-1.0-0.50.00.51.01.52.0
Flux
Ano
maly
ED4ED3
Anomaly of Terra LW DAY TOA Flux (Global)
slope (per decade) = -0.1992595% conf = 0.18154
slope (per decade) = -0.1229695% conf = 0.17736
OCEAN
2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014-4-3-2-101234
Flux
Ano
maly
LAND
slope (per decade) = -0.6256395% conf = 0.50098
slope (per decade) = -0.1718995% conf = 0.44063
2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 YEAR
-2.0-1.5-1.0-0.50.00.51.01.52.0
Flux A
noma
ly
ALL SCENES
slope (per decade) = -0.3243195% conf = 0.19490
slope (per decade) = -0.1492395% conf = 0.17592
TERRA/AQUA EDITION-‐4 VALIDATION
CERES Instrument Working Group
2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014-2.0-1.5-1.0-0.50.00.51.01.52.0
Flux
Ano
maly
ED4ED3
Anomaly of Aqua LW DAY TOA Flux (Global)
slope (per decade) = -0.1246895% conf = 0.24528
slope (per decade) = -0.3819095% conf = 0.25636
OCEAN
2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014-4-3-2-101234
Flux
Ano
maly
LAND
slope (per decade) = -0.2863695% conf = 0.71079
slope (per decade) = 1.3033295% conf = 0.71333
2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 YEAR
-2.0-1.5-1.0-0.50.00.51.01.52.0
Flux A
noma
ly
ALL SCENES
slope (per decade) = -0.1152895% conf = 0.26998
slope (per decade) = 0.1480995% conf = 0.26342
TERRA/AQUA EDITION-‐3 VALIDATION
CERES Instrument Working Group
2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014-2
-1
0
1
2 A
noma
ly (W
m-2 ) TerraAqua
Terra & Aqua (ED3) (Day-Night) LW TOA Flux (Global)
slope (per decade) = -0.1342295% conf = 0.09537
slope (per decade) = -0.3890295% conf = 0.14281
OCEAN
2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014-2
-1
0
1
2
Ano
maly
(Wm-2 )
slope (per decade) = 0.2460595% conf = 0.25666
slope (per decade) = 1.6262495% conf = 0.32408
LAND
2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 YEAR
-2
-1
0
1
2
Ano
maly
(Wm-2 )
slope (per decade) = -0.0462695% conf = 0.10822
slope (per decade) = 0.1927795% conf = 0.12513
ALL SCENES
TERRA/AQUA EDITION-‐4 VALIDATION
CERES Instrument Working Group
2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014-2
-1
0
1
2 A
noma
ly (W
m-2 ) TerraAqua
Terra & Aqua (ED4) (Day-Night) LW TOA Flux (Global)
slope (per decade) = -0.1893095% conf = 0.08424
slope (per decade) = -0.0547795% conf = 0.10772
OCEAN
2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014-2
-1
0
1
2
Ano
maly
(Wm-2 )
slope (per decade) = -0.0079995% conf = 0.26107
slope (per decade) = 0.0833395% conf = 0.32804
LAND
2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 YEAR
-2
-1
0
1
2
Ano
maly
(Wm-2 )
slope (per decade) = -0.1593595% conf = 0.10137
slope (per decade) = 0.0083895% conf = 0.12733
ALL SCENES
TERRA/AQUA EDITION COMPARISON
CERES Instrument Working Group
2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014-1.0
-0.5
0.0
0.5
1.0 Fl
ux (E
D4-E
D3) %
LW Day
Terra TOA Global Flux Difference (ED4-ED3) for Allsky Scenes
2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014-0.2
-0.1
0.0
0.1
0.2
Flux
(ED4
-ED3
) %
LW Night
2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 YEAR
-0.50
-0.25
0.00
0.25
0.50
Flux
(ED4
-ED3
) %
SW
TERRA/AQUA EDITION COMPARISON
CERES Instrument Working Group
2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014-1.0
-0.5
0.0
0.5
1.0 Fl
ux (E
D4-E
D3) %
LW Day
Aqua TOA Global Flux Difference (ED4-ED3) for Allsky Scenes
2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014-0.2
-0.1
0.0
0.1
0.2
Flux
(ED4
-ED3
) %
LW Night
2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 YEAR
-0.50
-0.25
0.00
0.25
0.50
Flux (
ED4-E
D3) %
SW
TERRA/AQUA DATA AVAILABILITY
CERES Instrument Working Group
Edi7on3 Data Products (Instrument): Start of Mission – June 2014
Edi7on4 Gains and Spectral Response Func7ons (SRF) : Terra and Aqua BDS product -‐ Start of Mission to Dec 2013
Edi7on1-‐CV Data Products (Instrument & ERBE-‐like): Start of Mission – August 2014
SUMMARY
CERES Instrument Working Group
• CERES FM5 gains for EdiDon1 processing were delivered and are currently under producDon.
• FM5 SW radiances are higher than the FM3 measurements by ~2 W m-‐2sr-‐1.
• Instrument Gain and Spectral Response FuncDons for the Terra/Aqua EdiDon4 processing were delivered through December 2013.
• ValidaDon studies have shown that the trend differences for ocean and land scenes in Aqua LW-‐day measurements was corrected in EdiDon-‐4 products.
BACK UP SLIDES
CERES FM5 TM EDITION COMPARISON
CERES Instrument Working Group
Changes in FM5 Total and SW sensor gains for Edi7on1 have removed some of the trends in D-‐N Differences.
2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014-2.0-1.5-1.0-0.50.00.51.01.52.0
Flux
Ano
maly
ED4ED3
Anomaly of Terra LW NIGHT TOA Flux (Global)
slope (per decade) = -0.3097495% conf = 0.21522
slope (per decade) = -0.3099995% conf = 0.21519
OCEAN
2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014-4-3-2-101234
Flux
Ano
maly
LAND
slope (per decade) = -0.6851395% conf = 0.57713
slope (per decade) = -0.6851895% conf = 0.57702
2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 YEAR
-2.0-1.5-1.0-0.50.00.51.01.52.0
Flux A
noma
ly
ALL SCENES
slope (per decade) = -0.3639895% conf = 0.21512
slope (per decade) = -0.3638595% conf = 0.21488
2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014-2.0-1.5-1.0-0.50.00.51.01.52.0
Flux
Ano
maly
ED4ED3
Anomaly of Aqua LW NIGHT TOA Flux (Global)
slope (per decade) = -0.0967895% conf = 0.22394
slope (per decade) = -0.0198095% conf = 0.22584
OCEAN
2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014-4-3-2-101234
Flux
Ano
maly
LAND
slope (per decade) = -0.3724295% conf = 0.55634
slope (per decade) = -0.3002995% conf = 0.55901
2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 YEAR
-2.0-1.5-1.0-0.50.00.51.01.52.0
Flux A
noma
ly
ALL SCENES
slope (per decade) = -0.1290595% conf = 0.21939
slope (per decade) = -0.0513295% conf = 0.22241