THE 2003 EDITION OF GEISA:A SPECTROSCOPIC DATABASE SYSTEM FOR
THE SECOND GENERATION VERTICAL SOUNDERSRADIANCE SIMULATION
N. Jacquinet-Husson, N.A. Scott, A. Chédin, K. Garceran, R. Armante
http://ara.lmd.polytechnique.fr
Laboratoire de Météorologie DynamiqueAtmospheric Radiation Analysis Group
Ecole Polytechnique91128, Palaiseau, France
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GEISA-03 OVERVIEW
Fields of the format for line transitions in GEISA�� ���� ���� ���� ���� ���� ���� ���� ���� �� �� ���� �� �� ���� ��� � � � � � � � � � � � � � � � � � �� � �� � �� � �
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Fortran format
descriptor
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� ' � & � � � �( � �8< 9= �> # � � � � � � � �" � � � � � � � � � � � � � & � � � � � ��;9= �/ � �( � � � � � �" � � � � � � � � � � � � � & � � � � � ��;= ? > # � � � � � � � � � � � � � � � � � � � � � & � � � � � ��;= ?/ � �( � � � � � � � � � � � � � � � � � � � & � � � � � � +, � � @ & � � � � �� � � � � � �' � � � � � � � �� ' � � � � � �8 � � & � � � � � � ��+� � � � � � � � 9 � � � � � �# � � �� � � � � � � � � � & & � � � � � �9 � �� � � �# � � �� � � � � � � � � � & & � � � � � �9 � � � � � �# � � �� � � � � � � � � � & & � � � � � �9 � �� � � �# � � �� � � � � � � � � � & & � � � � � � � & �' �� & �' �� & �' �� & �' � ' � &( � � '' � &( � � '' � &( � � '' � &( � � ' �" � # � � � � � � A+ BC � & � � �
" � � � � � �D � D �D � D - � � � � & � � � � � � � � � & � � � � � � �� �+�- �- �- �- - � � � � & � � � � � � � � � & � � � � � �� # � �+�E � E �E � E - � � � � � � D 7 - � � � � � & � � � � � � � � & � � � � � � +
15401
1346266
GEISA 19972001 update
281850
1346266
GEISA 19972003 update
13616671628116
1346266
Nu
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/ A A>/ A A>/ A A>/ A A>> 0 0 B> 0 0 B> 0 0 B> 0 0 B / A A�/ A A�/ A A�/ A A� � � � �� � � �� � � �� � � �
/ A A� # � � �/ A A� # � � �/ A A� # � � �/ A A� # � � �
� � � �� � � �� � � �� � � � ↑↑↑↑� � � � �� � � � �� � � � �� � � � �
H2O 1 161-162-171-181-182 58726
CO2 2 626-627-628-636-637-638-728-828-838 76826
O3 3 666-668-686-667-676 319248
N2O 4 446-447-448-456-546 26681
CO 5 26- 36- 28- 27- 38- 37 13515
CH4 6 211-311 175941
O2 7 66- 67- 68 6290
NO 8 46- 48- 56 99123
SO2 9 626-646 38853
NO2 10 646 104224
NH3 11 411-511 29082
PH3 12 131 11740
HNO3 13 146 171504
OH 14 61- 62- 81 42866
HF 15 19 107
HCl 16 15-17 533
HBr 17 11-19 1294
HI 18 17 806
ClO 19 56-76 7230
OCS 20 622-624-632-623-822-634-722 24922
H2CO 21 126-128-136 2701
Molecule Code Isotopes # Transitions
/ A A� # � � �/ A A� # � � �/ A A� # � � �/ A A� # � � �
� � � �� � � �� � � �� � � � ↑↑↑↑� � � � �� � � � �� � � � �� � � � �
C2H6 22 226-236 14981
CH3D 23 212 35518
C2H2 24 221-231 3115
C2H4 25 211-311 12978
GeH4 26 411 824
HCN 27 124-125-134 2550
C3H8 28 221 8983
C2N2 29 224 2577
C4H2 30 211 1405
hc3n 31 124 2027
HOCl 32 165-167 17862
N2 33 44 120
CH3Cl 34 215-217 18344
H2O2 35 166 100781
H2S 36 121-141-131 20788
hcooh 37 261 3388
COF2 38 269 83750
SF6 39 29 11520
C3H4 40 341 3390
HO2 41 166 38804
CLONO2 42 564-764 32199
Spectral range: 0.0 – 25232.004100 cm-1 Total : 1,628,116
16%11%
73%2001 kept2003 new2003 updated
266449185627
1176040
0
50000
100000
150000
200000
250000
300000
350000
H2O CO2 O3 N2O CH4 NO SO2 NO2 HNO3 OH
0
500
1000
1500
2000
2500
3000
GeH4 HCN N2 HC3N HF HCL HBR HI C4H2 H2CO C2N2
0
5000
10000
15000
20000
25000
30000
35000
40000
C2H6 CH3D C2H2 C2H4 O2 ClO C3H8 HCOOH C3H4 CO
0
20000
40000
60000
80000
100000
120000
HOCl NH3 ch3cl H2O2 H2S PH3 COF2 SF6 OCS HO2 ClONO2
A Database on atmospheric aerosols from LITMS (Rublev, 1994)
The software package and database OPAC (Optical Properties of Aerosols and Clouds) (Hess et al., 1998)
The Global Aerosol Data Set: GADS (Koepke et al., 1997)
GEISA/IASI-03 OVERVIEW
The GEISA/IASI-03 database is both an extraction (spectral range 599 3001 cm-1) and a partial update of the GEISA-03 Spectroscopic database
It is maintained and developed with the purpose of assessing theIASI measurements capabilities, within the ISSWG, in the frameof the CNES/EUMETSAT Polar System EPS preparation, by simulating high resolution radiances and/or using experimental data.
Spectral range: 599-3001 cm-1
A Sub-database on individual lines of 14 molecules (53 isotopic species) :
H2O, CO2, O3, N2O, CO, CH4, O2, NO, SO2, NO2, HNO3, OCS, C2H2, N2
A Sub-database on absorption Cross- Sections of 6 molecules :CFC-11, CFC-12, CFC-14, CCl4, N2O5, HCFC-22
A Sub-database on micro-physical and optical properties of atmospheric aerosols
/ A A� # � � �/ A A� # � � �/ A A� # � � �/ A A� # � � �
� � � �� � � �� � � �� � � � ↑↑↑↑� � � � �� � � � �� � � � �� � � � �
Molecule Code Isotopes # Transitionsh2o 1 161-162-171-181-182 13278
co2 2 626-627-628-636-637-638-728-828-838 50840
o3 3 666-668-686-667-676 195102
n2o 4 446-447-448-456-546 18966
co 5 26- 36- 28- 27- 38- 37 3674
ch4 6 211-311 +CH3D 121281
o2 7 66- 67- 68 435
no 8 46- 48- 56 29608
so2 9 626-646 22301
no2 10 646 71687
hno3 13 146 152586
ocs 20 622-624-632-623-822-634-722 19768
c2h2 24 221-231 2904
n2 33 44 120
Spectral range: 599 – 3001 cm-1 Total : 702,550
43%
57%
GEISA/IASI
� * = � � -/ / . �� * = � � -/ / . �� * = � � -/ / . �� * = � � -/ / . � � �� � &� �� � &� �� � &� �� � &
74%
26%
GEISA/IASI
� * = � � -/ / . �� * = � � -/ / . �� * = � � -/ / . �� * = � � -/ / . � $ � � �) " � � &$ � � �) " � � &$ � � �) " � � &$ � � �) " � � &
7%
93%
52276
650274
2001 kept 2003 new
0
20000
40000
60000
80000
100000
120000
140000
160000
180000
200000
H2O CO2 O3 N2O CO CH4 O2 NO SO2 NO2 HNO3 OCS C2H2 N2
2003 update
GEISA/IASI 2001
0
1000
2000
3000
O2 C2H2 N2
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� � � � � # � �� � � � � # � �� � � � � # � �� � � � � # � �
= �8 � � 9 � � � = �8 � � 9 � � � = �8 � � 9 � � � = �8 � � 9 � � �
9 � � � � � �# � �9 � �� � � �# � �9 � � � � � �# � �9 � �� � � �# � �
= �8 � � 2 = �8 � � 2 = �8 � � 2 = �8 � � 2
�� �� � � ��� �� �� ��� �� � � ��� �� �� � � �" � � 8 �� �" � � 8 �� �" � � 8 �� �" � � 8 �
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2003 UPDATE ILLUSTRATIONS
-0.04
-0.03
-0.02
-0.01
0
0.01
0.02
0.03
0 500 1000 1500 2000
Fdi
f (c
m-1
)
Number of lines
H2O RAL / geisa+toth Frequency differences : Fdif = [ F(RAL) - F(GS+TOT) ] in cm-1
-0.02
-0.015
-0.01
-0.005
0
0.005
0.01
0.015
0.02
700 800 900 1000 1100 1200 1300E
dif
(cm
-1)
Frequency (cm-1)
H2O RAL / geisa+toth Ground Level Energy differences : Edif = [ E(RAL) - E(GS+TOT) ] in cm-1
�� ��
�� ��
�� ��
�� ��
-100
-50
0
50
100
700 800 900 1000 1100 1200 1300Id
if (
%)
Frequency (cm-1)
H2O RAL / geisa+toth Intensity differences : Idif = [ I(RAL) - I(GS+TOT) ] in percent
-100
-50
0
50
100
150
200
250
700 800 900 1000 1100 1200 1300
HW
dif
(%)
Frequency (cm-1)
H2O RAL / geisa+toth air broadened halfwidth differences : HWdif = [ HW(RAL) - HW(GS+TOT) ] in percent
-21
-22
-23
-24
-25
-26
-2710000 12000 14000 16000 18000 20000 22000 24000
Log
Int
ensi
ty (
cm m
olec
ule-
1 @
296
K)
Wavenumber (cm-1)
GEISA 1997 for H2O
-21
-22
-23
-24
-25
-26
-2710000 12000 14000 16000 18000 20000 22000 24000
Log
Int
ensi
ty (
cm m
olec
ule-
1 @
296
K)
Wavenumber (cm-1)
GEISA 2003 for H2O
-19
-20
-21
-22
-23
-24
-25
-26
-27
-28500 1000 1500 2000 2500 3000
Log
Int
ensi
ty (
cm m
olec
ule-
1 @
296
K)
Wavenumber (cm-1)
GEISA 1997 for O3
-19
-20
-21
-22
-23
-24
-25
-26
-27
-28500 1000 1500 2000 2500 3000
Log
Int
ensi
ty (
cm m
olec
ule-
1 @
296
K)
Wavenumber (cm-1)
GEISA 2003 for O3
-18
-20
-22
-24
-26
-28
0 1000 2000 3000 4000 5000 6000
Log
Int
ensi
ty (
cm m
olec
ule-
1 @
296
K)
Wavenumber (cm-1)
GEISA 1997 for CH4
-18
-20
-22
-24
-26
-28
0 1000 2000 3000 4000 5000 6000
Log
Int
ensi
ty (
cm m
olec
ule-
1 @
296
K)
Wavenumber (cm-1)
GEISA 2003 for CH4
9 - D = / A A A � � � & � � � �<9 - D = / A A A � � � & � � � �<9 - D = / A A A � � � & � � � �<9 - D = / A A A � � � & � � � �< �� �� � � ��� �� � � ��� �� � � ��� �� � � �
→ � � � �� � � �� � � �� � � �
Pure Vapor
1000
100
10
1
0.1
180 200 220 240 260 280 300
Pre
ssur
e (H
Pa)
Temperature (K)
HCFC 22 in GEISA/IASI-03
GEISA/IASI-01VARANASI
HURLEYAUWERA
-10
-5
0
5
10
15
20
25
30
35
40
1210 1220 1230 1240 1250 1260 1270
Abs
orpt
ion
Cro
ss S
ecti
on (
%)
Wavenumber (cm-1)
Difference (BIRK - IASI) / IASI
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
1210 1220 1230 1240 1250 1260 1270
Abs
orpt
ion
Cro
ss S
ecti
on (
1E-1
8cm
-2 m
ol-1
)
Wavenumber (cm-1)
N2O5 BIRK T=254.1 K P=0 Pa
More complementary information and assistance will be provided upon request from:
jacquinet@ lmd.polytechnique.fr
The current GEISA database is available with its associated management software, freely from the ARA/LMD group
workstations web site:
http ://ara.lmd.polytechnique.fr (over 350 registered users )
1. The water vapour spectroscopic parameters: still need to be validated;
2. The water vapour continuum: more tuning to be done when more situations and situations wit high water vapor content become available;
3. The freons bands at 850 and 920 cm-1: refine the temperature dependence;
4. O3 in the 9.6 micron region: the spectroscopic parameters still need to be validated;
5. Some CO2 – Q branches: further improvement/tuning of the line mixing
Some conclusions of validation exercises, using the4A-00/LMD Model, in the case of IASI radiative transfer
modelling
ACKNOWLEDGMENTS
to
CNES, EUMETSAT and ITSC-13 for their Encouragements and
Supports