GOES-14
Imager and Sounder
a preliminary look
Timothy J. Schmit
NOAA/NESDIS/Satellite Applications and Research
Advanced Satellite Products Branch (ASPB)
Mathew M. Gunshor, Tony Schreiner, Scott Bachmeier, Joleen Feltz,
Steve Wanzong, SSEC Data Center, etc.
CIMSS/SSEC, Madison, WI
Don Hillger and Tim Schmit co-lead the NOAA Science Test
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Outline
• Introduction
• First imager and sounder images
– Issues
– Comparisons
• Improved imager band 6 (13.3 um) spatial
resolution
• Preliminary inter-calibration results
• Improved INR and Operation thru eclipse
• Initial products (imager and sounder)
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• Web links
GOES-14
GOES-13/14/P have similar
instruments to GOES-812, but on a different
spacecraft bus.
Spring and fall eclipse
outages will be avoided
by larger onboard
batteries.
GOES-8/12
Improved navigation
Improved radiometrics
GOES-13/14/P
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GOES-14
von Karman vorticies
• GOES-O Science Test web page:
http://rammb.cira.colostate.edu/projects/goes-o/
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sediment plume
vortex in the marine layer clouds , snow
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actinoform clouds
Amazon suppressing the formation of cumulus
First GOES-14 Images
(sub-sampled)
Note the ‘brighter’ GOES-14 visible image
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From NOAA ASPB
GOES-12 (for comparison)
Note the sub-satellite points are different
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From NOAA ASPB
GOES-14 Sounder!
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Note clean signal, especially bands 1, 2, 12 and 15.
GOES-12 Sounder
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Data has been remapped to a common projection.
River Fog
GOES-14
GOES-12
The fog is a bit brighter and a appears more extensive in the GOES-14 image.
GOES-14 is able to discern urban centers more readily than GOES-12.
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Imager SRF
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Improved spatial resolution of GOES-14 Imager band 6
GOES-12
•
•
The improved spatial resolution of
the Geostationary Operational
Environmental Satellites (GOES)-14
imager band 6 has been verified.
This band, centered at 13.3 um, has
a number of uses, the main being
cloud height determination.
Important diagnostic work was
under-taken. After an issue was
raised dealing with the data stream
of imager band 6, the suggested fix
was implemented at the ground
station. Many groups, both within
NOAA/NESDIS, the Cooperative
Institutes, NASA and others, quickly
worked together to fix this issue.
GOES-14
The 13.3 um band 6 of the GOES-12 (left panel) has
an 8 km IGFOV (Instantaneous Geometric Field of
View); while the same band on the GOES-14 (right
panel) has a 4 km IGFOV. Note the finer resolution of
the cloud edges and the ‘cleaner’ image.
The improved spatial resolution of the GOES-14 imager band 6 (over
GOES-12/13 imagers) has been verified with initial on-orbit data.
(Courtesy of T. Schmit)
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Sponsor: OSD G-PSDI Program
Methodology: GEO – IASI Intercal
 Collocation in time and space.
 Within 30 minutes at geostationary subpoint (GSNO –
Geostationary Simultaneous Nadir Observation)
 Low Satellite View Angles (< 14)
 Spatial smoothing
 100km “running average” mitigates the negative effects of
poor spatial and temporal collocation, poor navigation, and
spatial resolution differences.
 Average radiances, not temperatures.
 Compare a common area around the GEO sub-point, not
“pixel to pixel” comparisons
 “Convolve” high spectral resolution Radiance spectra with
GEO Spectral Response Function.
 Compare mean scene brightness temperatures (converted
from mean scene radiances).
v2
 R(v) S (v)dv
i
Li 
Cooperative Institute for Meteorological Satellite Studies
University of Wisconsin - Madison
v1
v2
 S (v)dv
i
v1
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Preliminary intercalibration results with
GOES-14 Imager using IASI
• Mean temperature differences with IASI
(for 12 cases) are:
• -0.4 K for the Shortwave Window band (5 night
cases)
• +0.8 K for the Water Vapor band
• +0.1 K for the IR Window band
• -0.6 K for the CO2 Absorption band
– The CO2 band SRF may be updated before the
science test takes place.
– Some of these results may include cases where
navigation was not optimal.
– Similar results from Dr. Wu (not shown)
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Improved INR
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Great navigation just after yaw-flip
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Operation through Eclipse
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GOES Series Sounder Noise
14.70
1
1.760
1.160
0.710
0.670
0.750
0.320
0.330
SPEC
(I-M)
0.660
14.40
2
1.210
0.800
0.510
0.510
0.640
0.260
0.280
0.580
14.10
3
0.980
0.560
0.410
0.370
0.450
0.240
0.220
0.540
13.90
4
0.740
0.460
0.410
0.360
0.390
0.190
0.170
0.450
13.40
5
0.680
0.450
0.360
0.340
0.350
0.190
0.160
0.440
12.70
6
0.320
0.190
0.160
0.170
0.140
0.110
0.098
0.250
12.00
7
0.200
0.130
0.090
0.110
0.110
0.100
0.080
0.160
11.00
8
0.130
0.090
0.120
0.140
0.120
0.120
0.110
0.160
9.70
9
0.160
0.110
0.100
0.130
0.140
0.120
0.090
0.330
7.40
10
0.080
0.080
0.070
0.090
0.100
0.090
0.040
0.160
7.00
11
0.070
0.050
0.040
0.060
0.060
0.050
0.030
0.120
6.50
12
0.110
0.090
0.070
0.110
0.110
0.070
0.030
0.150
4.57
13
0.012
0.008
0.007
0.006
0.006
0.007
0.003
0.013
4.52
14
0.010
0.007
0.005
0.007
0.006
0.007
0.003
0.013
4.45
15
0.009
0.006
0.005
0.006
0.006
0.006
0.003
0.013
4.13
16
0.004
0.003
0.003
0.003
0.002
0.003
0.002
0.008
3.98
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0.004
0.003
0.002
0.003
0.002
0.003
0.002
0.008
3.70
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0.002
0.001
0.001
0.001
0.001
0.001
0.001
0.004
Wavelength
Channel GOES-08 GOES-09 GOES-10 GOES-11 GOES-12 GOES-13 GOES-14
GOES-14 – the best Sounder yet wrt noise performance!
Preliminary
Units: mW/(m2 ster cm-1)
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Cloud-top Pressure (GOES-14 Sounder)
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Cloud-top Pressure (GOES-14 Imager)
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Cloud-top Pressure (GOES-14 Sounder)
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Clear-sky brightness temperatures (Imager)
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Total Precipitable Water vapor (Sounder)
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Total Precipitable Water vapor (GOES-14 Sounder)
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GOES-14 Imager AMV
(mid and upper-level)
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SRF
• There maybe updated imager and sounder
GOES-14 spectral response functions
(SRF) released.
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GOES-14
Imager and Sounder
http://rammb.cira.colostate.edu/projects/goes-o/
http://www.star.nesdis.noaa.gov/star/GOES-14FirstImage.php
http://www.ssec.wisc.edu/media/spotlight/goes14/ir.html
http://cimss.ssec.wisc.edu/goes/blog/archives/3054
http://www.ssec.wisc.edu/data/geo/index.php?satellite=goes14&file=jpg
http://cimss.ssec.wisc.edu/goes/rt/sounder-dpi.php
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