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GOES-14Imager 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)• Web links

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GOES-14

GOES-13/14/P have similar instruments to GOES-8-12, but on a different spacecraft bus.

Spring and fall eclipse outages will be avoided by larger onboard batteries.

Improved navigation

Improved radiometrics

GOES-8/12

GOES-13/14/P

4• GOES-O Science Test web page: http://rammb.cira.colostate.edu/projects/goes-o/

GOES-14

von Karman vorticies

5actinoform clouds Amazon suppressing the formation of cumulus

vortex in the marine layer clouds , snowsediment plume

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First GOES-14 Images (sub-sampled)

From NOAA ASPBNote the ‘brighter’ GOES-14 visible image

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GOES-12 (for comparison)

Note the sub-satellite points are differentFrom NOAA ASPB

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GOES-14 Sounder!

Note clean signal, especially bands 1, 2, 12 and 15.

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GOES-12 Sounder

Data has been remapped to a common projection.

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River FogGOES-12GOES-14

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

• 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.

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) Sponsor: OSD G-PSDI Program

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.

GOES-12 GOES-14

Cooperative Institute for Meteorological Satellite StudiesUniversity of Wisconsin - Madison

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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).

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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 NoiseWavelength Channel GOES-08 GOES-09 GOES-10 GOES-11 GOES-12 GOES-13 GOES-14

SPEC (I-M)

14.70 1 1.760 1.160 0.710 0.670 0.750 0.320 0.330 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 17 0.004 0.003 0.002 0.003 0.002 0.003 0.002 0.008

3.70 18 0.002 0.001 0.001 0.001 0.001 0.001 0.001 0.004

Preliminary

GOES-14 – the best Sounder yet wrt noise performance!

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-14Imager 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