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ARTS - GARLIC - KOPRAA Lbl Model Intercomparison
Franz Schreier1, Sebastián Gimeno García1,Mathias Milz2, Ajil Kottayil2
.1. DLR — Remote Sensing Technology Institute, Oberpfaffenhofen, GERMANY
2. LTU — Lulea University of Technology, Kiruna, SWEDEN
ARTS Workshop 2014
Remote Sensing Technology Institute ARTS - GARLIC - KOPRA 1
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Introduction — Motivation
Verification and validation:one of the most important steps of code developmentQuality of radiative transfer models critical for atmospheric remotesensing productsDozen(s) of RT model intercomparisons, incl. Lbl models, e.g.
I AMIL2DA: KOPRA vs. GARLIC and some moreI IRTMW01: ARTS vs. GARLIC and some othersI Kristineberg 2009: ARTS vs. KOPRA
I ARTS – GARLIC – KOPRA ?!?!?
Remote Sensing Technology Institute ARTS - GARLIC - KOPRA 2
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Outline
1 The codes
2 Lbl Intercomparisons
3 Data and Assumptions
4 Results
Remote Sensing Technology Institute ARTS - GARLIC - KOPRA 3
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ARTS — Atmospheric Radiative Transfer Simulator
Originally developed for microwave applicationsI Nadir: AMSU-B, MHS, HIRS, . . .I Limb: Odin, SMILES, . . .I Uplooking: MIAWARA, AMSOS, . . .
Continuum: MT-CKD 2.0
S. Bühler, P. Eriksson et al., JQSRT 91, 65–93, 2005P. Eriksson, S. Bühler et al., JQSRT 112, 1551-1558, 2011
Remote Sensing Technology Institute ARTS - GARLIC - KOPRA 4
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GARLIC — Generic Atmospheric Radiation Lbl Infrared Code
Line shapes: Voigt, VanVleck⊗Doppler, LorentzLine data: HITRAN, HITEMP, GEISA, JPL, . . .Continua: CKD 2.0 (H2O, CO2, N2, O2), “dry air” (Liebe)Geometries: Limb, uplooking, downlooking (refraction optional)Instruments: Spectral response: FTS, Heterodyne, Fabry–Perot, . . .
Field-of-view: Box, Gauss, Trapez, . . .Implementation: FORTRAN 2008, all data read from external filesInversion: Jacobians by automatic differentationExtensions: (multiple) scattering infrared radiative transfer:
J. Mendrok: SARTRE — approx. spherical geo (GRL 2007)M. Vasquez: cloudy exo-planet atmospheres (A&A 2013a,b)
F. Schreier et al. JQSRT, 137, 29–50, 2014
Remote Sensing Technology Institute ARTS - GARLIC - KOPRA 5
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KOPRA — Karlsruhe Optimized & Precise Radiative transfer Algorithm
Originally developed for mid infraredI Fourier transform spectroscopyI Limb: MIPAS-Envisat, MIPAS-balloonI Limb+uplooking: MIPAS-STR, GLORIAI Uplooking, solar absorption: FTIR KirunaI non-LTE and (single) scattering
Continuum:H2O: CKD 2.4, CO2: ??, N2: Lafferty AO’96, O2: Tibault 97
G. Stiller, T. von Clarmann, B. Funke, N. Glatthor, F. Hase, M. Höpfner and A. Linden, JQSRT 72, 249–280, 2002
Remote Sensing Technology Institute ARTS - GARLIC - KOPRA 6
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Outline
1 The codes
2 Lbl Intercomparisons
3 Data and Assumptions
4 Results
Remote Sensing Technology Institute ARTS - GARLIC - KOPRA 7
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AMIL2DA — Advanced MIPAS Level 2 Data Analysis
Intercomparison ofalgorithms and data analysisstrategies used by fiveEuropean groupsSeries of exercises: fromsimple cell transmission tomore realistic radianceExercise 20:Limb with tangent @ 40 km,apodized FTS line shape,finite field-of-view;H2O, CO2, O3, N2O, CH4;HITRAN 98 andCKD-continuum
T. von Clarmann et al. JQSRT, 78, 281–407, 20021,215 1,215.5 1,216 1,216.5 1,2170
50
100
Wavenumber ν [cm−1]
Rad
ian
ceI[ n
W/(c
m2
srcm
−1)]
KOPRAGARLIC
1,215.5 1,216 1,216.5
−0.1
0
0.1
0.2
0.3
∆I
[ nW/(c
m2
srcm
−1)]
BexpODtrapez-pathtrapez-Laguerre
Remote Sensing Technology Institute ARTS - GARLIC - KOPRA 8
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IRTMW01
Intercomparison of 8 µW codesSeries of 5 “cases”, starting withline shape and absorptionFull RT incl. FoV and SRFall geometries
Case 3 Uplooking RAM-like
0
10
20
30
40
Tem
per
atu
reTB
[K]
ARTS 0dgARTS 60dgGARLIC 0dgGARLIC 60dg
−0.1
−0.05
0
∆TB
[K]
avintBexpODHermitetrapez-pathtrapez-Laguerre
4.72 4.73 4.74 4.75 4.76
−0.2
−0.1
0
Wavenumber ν [cm−1]
∆TB
[K]
avintBexpODHermitetrapez-pathtrapez-Laguerre
Case 3 Downlooking AMSU-like
2.90 2.95 3.000.15
0.2
0.25
0.3
0.35
∆T
B [K
]
268.4
268.8
269.2
269.6
270
Equiv
ale
nt T
em
pera
ture
TB [K
]
ARTS 180dg
ARTS 130dg
GARLIC TL 180dg
GARLIC TL130dg
4.95 5 5.05
Wavenumber [cm−1
]
0
0.2
0.4
0.6
0.8
1
1.2
avint
B exp OD
Hermite
path trapez
trapez−Laguerre
267.5
268
268.5
269
269.5
270
5.8 6 6.2 6.4
−2
0
2
4
6
235
240
245
250
255
260
265
0.22
0.23
0.24
0.25
0.26
0.27
∆T
B [K
]
0.1
0.2
0.3
0.4
0.5
−2
0
2
4
6
C. Melsheimer et al. Radio Science, 40, RS1007, 2005
Remote Sensing Technology Institute ARTS - GARLIC - KOPRA 9
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Kristineberg 2009 — M. Milz: ARTS IR Application
Motivation:Nadir sounding with similargeometry as AMSU-B /MHS since early 80’sConclusion:Good agreementARTS–KOPRA(and LblRTM)Outlook:Update continuum
Radiances for one channel
0 10 20 30 40 500
2000
4000
6000
8000
10000
12000HIRS Channel #07 for all Profiles
0 10 20 30 40 504000
6000
8000
10000
12000
14000HIRS Channel #08 for all Profiles
0 10 20 30 40 502000
3000
4000
5000
6000
7000
8000HIRS Channel #09 for all Profiles
0 10 20 30 40 502000
4000
6000
8000
10000
12000
14000
16000HIRS Channel #10 for all Profiles
0 10 20 30 40 50500
1000
1500
2000
2500HIRS Channel #11 for all Profiles
0 10 20 30 40 50200
250
300
350
400
450
500HIRS Channel #12 for all Profiles
Remote Sensing Technology Institute ARTS - GARLIC - KOPRA 10
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Outline
1 The codes
2 Lbl Intercomparisons
3 Data and Assumptions
4 Results
Remote Sensing Technology Institute ARTS - GARLIC - KOPRA 11
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GARAND atmospheres
200 250 300Temperature [K]
0
10
20
30
40
50
60
Alti
tude
[km
]
100
101
102
103
104
H2O [ppm]
Garand Atmospheres
0 2 4 6 8 10O3 [ppm]
L. Garand et al. JGR, 106, 24017, 2001Remote Sensing Technology Institute ARTS - GARLIC - KOPRA 12
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HIRS — High Resolution Infrared Sounder
19 infrared channel scanning radiometer used for operational atmosphericsounding by NASA/NOAA and EUMETSAT.CO2 absorption bands for temperature sounding. Also measures water vapour,ozone, N2O and cloud and surface temperatures.
500 1000 1500 2000 2500wavenumber [cm
−1]
0
0.2
0.4
0.6
0.8
1
Tra
nsm
issi
on
H2OO3COCH4CO2
0
0.2
0.4
0.6
0.8
1
Tra
nsm
issi
on
0
5
10
Rad
ianc
e [µ
W /
(cm
2 sr
cm
−1 )
]
0
0.1
0.2
Res
pons
e
NO
AA
17!
Remote Sensing Technology Institute ARTS - GARLIC - KOPRA 13
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Further Assumptions
HITRAN 2004, “main” molecules onlyContinuum: CKD or MT-CKDVoigt line shape (no prefactor)Geometry: nadir (downlooking 180◦), no FoVSurface temperature Tsurf = Tatm(0 km)
Remote Sensing Technology Institute ARTS - GARLIC - KOPRA 14
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Outline
1 The codes
2 Lbl Intercomparisons
3 Data and Assumptions
4 Results
Remote Sensing Technology Institute ARTS - GARLIC - KOPRA 15
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Brightness Temperatures
0 5 10 15 20
220
240
260
280
300
TB [
K]
us
Fri M
ay 2
3 1
3:4
8:4
3 2
014
220
240
260
280
300
TB [
K]
tropical
Fri M
ay 2
3 1
3:4
8:4
3 2
0140 5 10 15 20
Channel #
220
240
260
280
300sas
Fri M
ay 2
3 1
3:4
8:4
3 2
014
220
240
260
280
300mls
Fri M
ay 2
3 1
3:4
8:4
3 2
0140 5 10 15 20
220
240
260
280
300saw
Fri M
ay 2
3 1
3:4
8:4
3 2
014
220
240
260
280
300mlw
Fri M
ay 2
3 1
3:4
8:4
3 2
014
arts
garlic
kopra
Remote Sensing Technology Institute ARTS - GARLIC - KOPRA 16
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Perfect!
Thanks for your attention
Remote Sensing Technology Institute ARTS - GARLIC - KOPRA 17
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Perfect! . . . . . . wait a moment
whats about the other atmospheres?. . . and differences etc. ???
Remember: IASI etc. have sub-Kelvin sensitivity!
Remote Sensing Technology Institute ARTS - GARLIC - KOPRA 17
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First results IRS 2012
0 20 40−5
−3
−1
1
3
5Ch #15 2235
Fri F
eb 2
2 1
6:5
8:3
0 2
013
−4
−2
0
2
4
∆T
[K
]
Ch #10 802
Fri F
eb 2
2 1
6:5
8:3
0 2
013
−4
−2
0
2
4Ch # 5 716
Fri F
eb 2
2 1
6:5
8:3
0 2
013
−4
−2
0
2
4Ch # 1 670
Fri F
eb 2
2 1
6:5
8:3
0 2
0130 20 40
−4
−2
0
2
4Ch #16 2241
Fri F
eb 2
2 1
6:5
8:3
0 2
013
−4
−2
0
2
4Ch #11 1366
Fri F
eb 2
2 1
6:5
8:3
0 2
013
−4
−2
0
2
4Ch # 6 732
Fri F
eb 2
2 1
6:5
8:3
0 2
013
−4
−2
0
2
4Ch # 2 680
Fri F
eb 2
2 1
6:5
8:3
0 2
0130 20 40
n
−6−4−2
0246
Ch #17 2419
Fri F
eb 2
2 1
6:5
8:3
0 2
013
−4
−2
0
2
4Ch #12 1529
Fri F
eb 2
2 1
6:5
8:3
0 2
013
−4
−2
0
2
4Ch # 7 749
Fri F
eb 2
2 1
6:5
8:3
0 2
013
−4
−2
0
2
4Ch # 3 692
Fri F
eb 2
2 1
6:5
8:3
0 2
0130 20 40
−4
−2
0
2
4Ch #18 2521
Fri F
eb 2
2 1
6:5
8:3
0 2
013
−4
−2
0
2
4Ch #13 2187
Fri F
eb 2
2 1
6:5
8:3
0 2
013
−4
−2
0
2
4Ch # 8 901
Fri F
eb 2
2 1
6:5
8:3
0 2
013
−4
−2
0
2
4Ch # 4 703
Fri F
eb 2
2 1
6:5
8:3
0 2
013
a−g
g−k
k−a
0 20 40−4
−2
0
2
4Ch #19 2660
Fri F
eb 2
2 1
6:5
8:3
0 2
013
−4
−2
0
2
4Ch #14 2213
Fri F
eb 2
2 1
6:5
8:3
0 2
013
−4
−2
0
2
4Ch # 9 1030
Fri F
eb 2
2 1
6:5
8:3
0 2
013
Remote Sensing Technology Institute ARTS - GARLIC - KOPRA 18
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2013: N2 + O2 lines & continuum added in GARLIC
0 20 40−3−2−1
0123
Ch #15 2235
Fri F
eb 2
2 1
6:4
7:3
8 2
013
−3−2−1
0123
∆T
[K
]
Ch #10 802
Fri F
eb 2
2 1
6:4
7:3
8 2
013
−3−2−1
0123
Ch # 5 716
Fri F
eb 2
2 1
6:4
7:3
8 2
013
−3−2−1
0123
Ch # 1 670
Fri F
eb 2
2 1
6:4
7:3
8 2
0130 20 40
−3−2−1
0123
Ch #16 2241
Fri F
eb 2
2 1
6:4
7:3
8 2
013
−3−2−1
0123
Ch #11 1366
Fri F
eb 2
2 1
6:4
7:3
8 2
013
−3−2−1
0123
Ch # 6 732
Fri F
eb 2
2 1
6:4
7:3
8 2
013
−3−2−1
0123
Ch # 2 680
Fri F
eb 2
2 1
6:4
7:3
8 2
0130 20 40
n
−3−2−1
0123
Ch #17 2419
Fri F
eb 2
2 1
6:4
7:3
8 2
013
−3−2−1
0123
Ch #12 1529
Fri F
eb 2
2 1
6:4
7:3
8 2
013
−3−2−1
0123
Ch # 7 749
Fri F
eb 2
2 1
6:4
7:3
8 2
013
−3−2−1
0123
Ch # 3 692
Fri F
eb 2
2 1
6:4
7:3
8 2
0130 20 40
−3−2−1
0123
Ch #18 2521
Fri F
eb 2
2 1
6:4
7:3
8 2
013
−3−2−1
0123
Ch #13 2187
Fri F
eb 2
2 1
6:4
7:3
8 2
013
−3−2−1
0123
Ch # 8 901
Fri F
eb 2
2 1
6:4
7:3
8 2
013
−3−2−1
0123
Ch # 4 703
Fri F
eb 2
2 1
6:4
7:3
8 2
013
a−g
g−k
k−a
0 20 40−3−2−1
0123
Ch #19 2660
Fri F
eb 2
2 1
6:4
7:3
8 2
013
−3−2−1
0123
Ch #14 2213
Fri F
eb 2
2 1
6:4
7:3
8 2
013
−3−2−1
0123
Ch # 9 1030
Fri F
eb 2
2 1
6:4
7:3
8 2
013
Remote Sensing Technology Institute ARTS - GARLIC - KOPRA 19
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Channel 1: ARTS ≈ GARLIC
Channel 1 ⊂ Channel 2Similar absorption:CO2 > H2O > O3 > N2OMostly stratospheric emission
I Continuum & H2O irrelevant
Q-branch, convolution, . . . ??
NOAA15-HIRS for KOPRA !!!
Remote Sensing Technology Institute ARTS - GARLIC - KOPRA 20
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Channel 1: ARTS ≈ GARLIC
Channel 1 ⊂ Channel 2Similar absorption:CO2 > H2O > O3 > N2OMostly stratospheric emission
I Continuum & H2O irrelevant
Q-branch, convolution, . . . ??NOAA15-HIRS for KOPRA !!!
660 680 700 720 740
Wavenumber [cm−1
]
0
0.1
0.2
0.3
Re
sp
on
se
HIRS Normalized Response Functions
Fri J
un 6 1
4:2
3:4
1 2
014
noaa15/ch01
noaa15/ch02
noaa15/ch03
noaa15/ch04
noaa15/ch05
noaa15/ch06
noaa17/ch01
noaa17/ch02
noaa17/ch03
noaa17/ch04
noaa17/ch05
noaa17/ch06
Remote Sensing Technology Institute ARTS - GARLIC - KOPRA 20
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Channel 5, 6, and 7: GARLIC ≈ KOPRA
CO2 ≈ H2O > O3 > N2OMostly free troposphere emission(Weighting functions peak at 8 and 4 km for 708 and 745 cm−1)
Remote Sensing Technology Institute ARTS - GARLIC - KOPRA 21
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Channel 18 and 19: ARTS ≈ KOPRA
Weak absorptiontransparent down totroposphereContinua and/or H2O?¿?
Remote Sensing Technology Institute ARTS - GARLIC - KOPRA 22
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Without continuum? ARTS vs. GARLIC
Differences mostly < 0.25 KWhat is special with atm # 22Channels: 8, 9, 10, 17, 18, 19(901, 1030, 802, 2419, 2521, 2660 cm−1)
What is special withchannel # 12 @ 1529 cm−1 ?
0 10 20 30 40
Atmosphere #
−1.5
−1
−0.5
0
0.5
1
1.5
2
2.5
∆T
[K
]
ARTS−GARLIC: with Continuum
Th
u J
un
5
17
:35
:09
20
14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
0 10 20 30 40
Atmosphere #
−0.5
−0.3
−0.1
0.1
0.3
0.5
0.7
∆T
[K
]
ARTS−GARLIC: no Continuum
Th
u J
un
5
17
:22
:29
20
14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
Remote Sensing Technology Institute ARTS - GARLIC - KOPRA 23
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Without continuum? GARLIC vs. KOPRA
“Good” agreement (1.9 K) in channel 1KOPRA failed for atm # 4, 14, 25, 25
0 10 20 30 40
Atmosphere #
−60
−10
40
∆T
[K
]
GARLIC−KOPRA: no Continuum
Th
u J
un
5
17
:41
:29
20
14
200 220 240 260 280 300 320
T[K]
0
20
40
60
z[k
m]
Garand Atmospheres
Thu J
un 5 1
2:3
3:4
4 2
014
4
14
22
25
35
1e−06 1e−05 1e−04 1e−03 1e−02
H2O [ppV]
0
10
20
30
40
50
z [
km
]
Garand Atmospheres
Thu J
un 5 1
0:5
8:2
6 2
014
4
14
22
25
35
Remote Sensing Technology Institute ARTS - GARLIC - KOPRA 24
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What’s common . . . . . . and what’s different?
ARTS GARLIC KOPRA
S(T ) conversion “semi-TIPS” Atmos TIPS
Weak lines ? all rejection?
Line wings 25 cm−1 ??? 10 cm−1, H2O: 25 cm−1
Continuum MT-CKD 1.0 CKD 2.0 CKD 2.4, . . .
Inhomogeneous Path ? quadrature B linear τ layers ?
?
Remote Sensing Technology Institute ARTS - GARLIC - KOPRA 25
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Conclusions and Outlook
No code is “the best” for all channels and/or atmospheresI max ∆Tag = +2.3 K in channel 11 @ 1366 cm−1I max ∆Tgk = +2.5 K in channel 15 @ 2235 cm−1I max ∆Tka = −3.1 K in channel 15 @ 2235 cm−1
(channel 1 ignored)
Use another code (e.g. LblRTM) as reference? NO!Include more codes? hmmmm?Use common absorption coefficientsPlot differences vs. (min, max, delta, . . . ) temperature, H2O, . . .Compare monochromatic spectra and/or transmission
Open questionsI ContinuumI Lines strength T conversionI Line wing cut-off (CO2 at 2400 cm−1)I Weak line suppression
Remote Sensing Technology Institute ARTS - GARLIC - KOPRA 26
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Conclusions and Outlook
No code is “the best” for all channels and/or atmospheresI max ∆Tag = +2.3 K in channel 11 @ 1366 cm−1I max ∆Tgk = +2.5 K in channel 15 @ 2235 cm−1I max ∆Tka = −3.1 K in channel 15 @ 2235 cm−1
(channel 1 ignored)
Use another code (e.g. LblRTM) as reference? NO!Include more codes? hmmmm?Use common absorption coefficientsPlot differences vs. (min, max, delta, . . . ) temperature, H2O, . . .Compare monochromatic spectra and/or transmission
Open questionsI ContinuumI Lines strength T conversionI Line wing cut-off (CO2 at 2400 cm−1)I Weak line suppression
Remote Sensing Technology Institute ARTS - GARLIC - KOPRA 26
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Outline
5 AppendixMore T Difference PlotsWeighting and Response FunctionsContinua
Remote Sensing Technology Institute ARTS - GARLIC - KOPRA 27
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Max. Temperature Delta in Layer
10 15 2025 30 35−4−3−2−1
01234
Ch #15 2235
Tu
e F
eb
26
17
:00
:56
20
13
−0.8−0.6−0.4−0.2
00.20.4
∆T
[K
]
Ch #10 802
Tu
e F
eb
26
17
:00
:56
20
13
−2
−1
0
1
2Ch # 5 716
Tu
e F
eb
26
17
:00
:56
20
13
−4−3−2−1
01234
Ch # 1 670
Tu
e F
eb
26
17
:00
:56
20
1310 15 2025 30 35
−2
−1
0
1
2Ch #16 2241
Tu
e F
eb
26
17
:00
:56
20
13
−4−3−2−1
01234
Ch #11 1366
Tu
e F
eb
26
17
:00
:56
20
13
−1
0
1
2Ch # 6 732
Tu
e F
eb
26
17
:00
:56
20
13
−0.4
−0.2
0
0.2
0.4Ch # 2 680
Tu
e F
eb
26
17
:00
:56
20
1310 15 2025 30 35
∆Tmax
[K]
−2
−1
0
1
2Ch #17 2419
Tu
e F
eb
26
17
:00
:56
20
13
−2
−1
0
1Ch #12 1529
Tu
e F
eb
26
17
:00
:56
20
13
−1
0
1Ch # 7 749
Tu
e F
eb
26
17
:00
:56
20
13
−0.4−0.2
00.20.40.60.8
Ch # 3 692
Tu
e F
eb
26
17
:00
:56
20
1310 15 2025 30 35
−2
−1
0
1
2Ch #18 2521
Tu
e F
eb
26
17
:00
:56
20
13
−3
−2
−1
0
1
2Ch #13 2187
Tu
e F
eb
26
17
:00
:56
20
13
−1
0
1Ch # 8 901
Tu
e F
eb
26
17
:00
:56
20
13
−1
0
1
2Ch # 4 703
Tu
e F
eb
26
17
:00
:56
20
13
a−g
g−k
k−a
10 15 2025 30 35
Ch #19 2660
Tu
e F
eb
26
17
:00
:56
20
13
−2
−1
0
1Ch #14 2213
Tu
e F
eb
26
17
:00
:56
20
13
−0.5
0
0.5
1Ch # 9 1030
Tu
e F
eb
26
17
:00
:56
20
13
Remote Sensing Technology Institute ARTS - GARLIC - KOPRA 28
-
195 205 215 225−4
−2
0
2
4Ch #15 2235
Mon F
eb 2
5 1
4:5
0:4
1 2
013
−0.8−0.6−0.4−0.2
00.20.4
∆T
[K
]
Ch #10 802
Mon F
eb 2
5 1
4:5
0:4
1 2
013
−2
−1
0
1
2Ch # 5 716
Mon F
eb 2
5 1
4:5
0:4
1 2
013
−4
−2
0
2
4Ch # 1 670
Mon F
eb 2
5 1
4:5
0:4
1 2
013195 205 215 225
−2
−1
0
1
2Ch #16 2241
Mon F
eb 2
5 1
4:5
0:4
1 2
013
−4
−2
0
2
4Ch #11 1366
Mon F
eb 2
5 1
4:5
0:4
1 2
013
−1
0
1
2Ch # 6 732
Mon F
eb 2
5 1
4:5
0:4
1 2
013
−0.4
−0.2
0
0.2
0.4
Brightness Temperature Difference vs Minimum Temperature
Ch # 2 680
Mon F
eb 2
5 1
4:5
0:4
1 2
013195 205 215 225
Tmin
[K]
−2
−1
0
1
2Ch #17 2419
Mon F
eb 2
5 1
4:5
0:4
1 2
013
−2
−1
0
1Ch #12 1529
Mon F
eb 2
5 1
4:5
0:4
1 2
013
−1
−0.5
0
0.5
1Ch # 7 749
Mon F
eb 2
5 1
4:5
0:4
1 2
013
−0.4−0.2
00.20.40.60.8
Ch # 3 692
Mon F
eb 2
5 1
4:5
0:4
1 2
013195 205 215 225
−2
−1
0
1
2Ch #18 2521
Mon F
eb 2
5 1
4:5
0:4
1 2
013
−3
−2
−1
0
1
2Ch #13 2187
Mon F
eb 2
5 1
4:5
0:4
1 2
013
−1
−0.5
0
0.5
1Ch # 8 901
Mon F
eb 2
5 1
4:5
0:4
1 2
013
−1
0
1
2Ch # 4 703
Mon F
eb 2
5 1
4:5
0:4
1 2
013
a−g
g−k
k−a
195 205 215 225−2
−1
0
1
2Ch #19 2660
Mon F
eb 2
5 1
4:5
0:4
1 2
013
−2
−1
0
1Ch #14 2213
Mon F
eb 2
5 1
4:5
0:4
1 2
013
−0.5
0
0.5
1Ch # 9 1030
Mon F
eb 2
5 1
4:5
0:4
1 2
013
Remote Sensing Technology Institute ARTS - GARLIC - KOPRA 29
-
240260280300320−4
−2
0
2
4Ch #15 2235
Mon F
eb 2
5 1
5:2
8:3
3 2
013
−0.8−0.6−0.4−0.2
00.20.4
∆T
[K
]
Ch #10 802
Mon F
eb 2
5 1
5:2
8:3
3 2
013
−2
−1
0
1
2Ch # 5 716
Mon F
eb 2
5 1
5:2
8:3
3 2
013
−4
−2
0
2
4Ch # 1 670
Mon F
eb 2
5 1
5:2
8:3
3 2
013240260280300320
−2
−1
0
1
2Ch #16 2241
Mon F
eb 2
5 1
5:2
8:3
3 2
013
−4
−2
0
2
4Ch #11 1366
Mon F
eb 2
5 1
5:2
8:3
3 2
013
−1
0
1
2Ch # 6 732
Mon F
eb 2
5 1
5:2
8:3
3 2
013
−0.4
−0.2
0
0.2
0.4
Brightness Temperature Differences vs. Surface Temperature
Ch # 2 680
Mon F
eb 2
5 1
5:2
8:3
3 2
013240260280300320
Tsurf
[K]
−2
−1
0
1
2Ch #17 2419
Mon F
eb 2
5 1
5:2
8:3
3 2
013
−2
−1
0
1Ch #12 1529
Mon F
eb 2
5 1
5:2
8:3
3 2
013
−1
−0.5
0
0.5
1Ch # 7 749
Mon F
eb 2
5 1
5:2
8:3
3 2
013
−0.4−0.2
00.20.40.60.8
Ch # 3 692
Mon F
eb 2
5 1
5:2
8:3
3 2
013240260280300320
−2
−1
0
1
2Ch #18 2521
Mon F
eb 2
5 1
5:2
8:3
3 2
013
−3
−2
−1
0
1
2Ch #13 2187
Mon F
eb 2
5 1
5:2
8:3
3 2
013
−1
−0.5
0
0.5
1Ch # 8 901
Mon F
eb 2
5 1
5:2
8:3
3 2
013
−1
0
1
2Ch # 4 703
Mon F
eb 2
5 1
5:2
8:3
3 2
013
a−g
g−k
k−a
240260280300320−2
−1
0
1
2Ch #19 2660
Mon F
eb 2
5 1
5:2
8:3
3 2
013
−2
−1
0
1Ch #14 2213
Mon F
eb 2
5 1
5:2
8:3
3 2
013
−0.5
0
0.5
1Ch # 9 1030
Mon F
eb 2
5 1
5:2
8:3
3 2
013
Remote Sensing Technology Institute ARTS - GARLIC - KOPRA 30
-
20 40 60 80100120−4
−2
0
2
4Ch #15 2235
Mon F
eb 2
5 1
5:0
5:3
3 2
013
−0.8−0.6−0.4−0.2
00.20.4
∆T
[K
]
Ch #10 802
Mon F
eb 2
5 1
5:0
5:3
3 2
013
−2
−1
0
1
2Ch # 5 716
Mon F
eb 2
5 1
5:0
5:3
3 2
013
−4
−2
0
2
4Ch # 1 670
Mon F
eb 2
5 1
5:0
5:3
3 2
01320 40 60 80100120
−2
−1
0
1
2Ch #16 2241
Mon F
eb 2
5 1
5:0
5:3
3 2
013
−4
−2
0
2
4Ch #11 1366
Mon F
eb 2
5 1
5:0
5:3
3 2
013
−1
0
1
2Ch # 6 732
Mon F
eb 2
5 1
5:0
5:3
3 2
013
−0.4
−0.2
0
0.2
0.4
Brightness Temperature Differences vs Temperature Range
Ch # 2 680
Mon F
eb 2
5 1
5:0
5:3
3 2
01320 40 60 80100120
Tmax
−Tmin
[K]
−2
−1
0
1
2Ch #17 2419
Mon F
eb 2
5 1
5:0
5:3
3 2
013
−2
−1
0
1Ch #12 1529
Mon F
eb 2
5 1
5:0
5:3
3 2
013
−1
−0.5
0
0.5
1Ch # 7 749
Mon F
eb 2
5 1
5:0
5:3
3 2
013
−0.4−0.2
00.20.40.60.8
Ch # 3 692
Mon F
eb 2
5 1
5:0
5:3
3 2
01320 40 60 80100120
−2
−1
0
1
2Ch #18 2521
Mon F
eb 2
5 1
5:0
5:3
3 2
013
−3
−2
−1
0
1
2Ch #13 2187
Mon F
eb 2
5 1
5:0
5:3
3 2
013
−1
−0.5
0
0.5
1Ch # 8 901
Mon F
eb 2
5 1
5:0
5:3
3 2
013
−1
0
1
2Ch # 4 703
Mon F
eb 2
5 1
5:0
5:3
3 2
013
a−g
g−k
k−a
20 40 60 80100120−2
−1
0
1
2Ch #19 2660
Mon F
eb 2
5 1
5:0
5:3
3 2
013
−2
−1
0
1Ch #14 2213
Mon F
eb 2
5 1
5:0
5:3
3 2
013
−0.5
0
0.5
1Ch # 9 1030
Mon F
eb 2
5 1
5:0
5:3
3 2
013
Remote Sensing Technology Institute ARTS - GARLIC - KOPRA 31
-
0 20 40 60−4
−2
0
2
4Ch #15 2235
Mon F
eb 2
5 1
4:3
1:2
6 2
013
−0.8−0.6−0.4−0.2
00.20.4
∆T
[K
]
Ch #10 802
Mon F
eb 2
5 1
4:3
1:2
6 2
013
−2
−1
0
1
2Ch # 5 716
Mon F
eb 2
5 1
4:3
1:2
6 2
013
−4
−2
0
2
4Ch # 1 670
Mon F
eb 2
5 1
4:3
1:2
6 2
0130 20 40 60
−2
−1
0
1
2Ch #16 2241
Mon F
eb 2
5 1
4:3
1:2
6 2
013
−4
−2
0
2
4Ch #11 1366
Mon F
eb 2
5 1
4:3
1:2
6 2
013
−1
0
1
2Ch # 6 732
Mon F
eb 2
5 1
4:3
1:2
6 2
013
−0.4
−0.2
0
0.2
0.4Ch # 2 680
Mon F
eb 2
5 1
4:3
1:2
6 2
0130 20 40 60
H2O [kg/m
2]
−2
−1
0
1
2Ch #17 2419
Mon F
eb 2
5 1
4:3
1:2
6 2
013
−2
−1
0
1Ch #12 1529
Mon F
eb 2
5 1
4:3
1:2
6 2
013
−1
−0.5
0
0.5
1Ch # 7 749
Mon F
eb 2
5 1
4:3
1:2
6 2
013
−0.4−0.2
00.20.40.60.8
Brightness Temperature Difference vs Water Column
Ch # 3 692
Mon F
eb 2
5 1
4:3
1:2
6 2
0130 20 40 60
−2
−1
0
1
2Ch #18 2521
Mon F
eb 2
5 1
4:3
1:2
6 2
013
−3
−2
−1
0
1
2Ch #13 2187
Mon F
eb 2
5 1
4:3
1:2
6 2
013
−1
−0.5
0
0.5
1Ch # 8 901
Mon F
eb 2
5 1
4:3
1:2
6 2
013
−1
0
1
2Ch # 4 703
Mon F
eb 2
5 1
4:3
1:2
6 2
013
a−g
g−k
k−a
0 20 40 60−2
−1
0
1
2Ch #19 2660
Mon F
eb 2
5 1
4:3
1:2
6 2
013
−2
−1
0
1Ch #14 2213
Mon F
eb 2
5 1
4:3
1:2
6 2
013
−0.5
0
0.5
1Ch # 9 1030
Mon F
eb 2
5 1
4:3
1:2
6 2
013
Remote Sensing Technology Institute ARTS - GARLIC - KOPRA 32
-
Weighting Functions
I(ν, s) =∫ s
0B(ν, T )
∂T (ν, s′)∂s′
ds′
Remote Sensing Technology Institute ARTS - GARLIC - KOPRA 33
-
Response Functions
700 800 900 1000 1100
Wavenumber [cm−1
]
0
0.02
0.04
0.06
Response
HIRS Normalized Response Functions
Fri J
un 6 1
4:5
3:3
5 2
014
noaa15/ch07
noaa15/ch08
noaa15/ch09
noaa15/ch10
noaa17/ch07
noaa17/ch08
noaa17/ch09
noaa17/ch10
1300 1400 1500 1600
Wavenumbers [cm−1
]
0
0.01
0.02
0.03
Response
HIRS Normalized Response Functions
Fri J
un 6 1
4:4
7:4
4 2
014
noaa15/ch11
noaa15/ch12
noaa17/ch11
noaa17/ch12
2200 2250
Wavenumber [cm−1
]
0
0.01
0.02
0.03
0.04
0.05
Response
HIRS Normalized Response Functions
Fri J
un 6 1
4:4
1:3
0 2
014
noaa15/ch13
noaa15/ch14
noaa15/ch15
noaa15/ch16
noaa17/ch13
noaa17/ch14
noaa17/ch15
noaa17/ch16
2350 2550 2750
Wavenumber [cm−1
]
0
0.01
0.02
0.03
0.04
Response
HIRS Normalized Response Functions
Fri J
un 6 1
4:4
4:1
9 2
014
noaa15/ch17
noaa15/ch18
noaa15/ch19
noaa17/ch17
noaa17/ch18
noaa17/ch19
Remote Sensing Technology Institute ARTS - GARLIC - KOPRA 34
-
CO2 Continua
Remote Sensing Technology Institute ARTS - GARLIC - KOPRA 35
The codesLbl IntercomparisonsData and AssumptionsResultsAppendixAppendixMore T Difference PlotsWeighting and Response FunctionsContinua
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