About TES
TES is a high-resolution infrared-imaging Fourier transform spectrometer offers a line-width-limited discrimination of essentially all radiatively active molecular species in the Earth's lower atmosphere.
TES has significantly more the spectral resolution of the AIRS instrument being flown aboard EOS Aqua. TES employs both the natural thermal emission of the surface and atmosphere and reflected sunlight, thereby providing day-night coverage anywhere on the globe.
TES operates in a combination of limb and nadir mode (called global survey mode) every other. On alternate days, TES does special observations including "step and stare" mode and assessment of special targets like volcanoes.
TES Parameters
Maximum sampling time of 16 sec,
signal-to-noise ratio of 600:1
| Name |
Parameter |
| Limb mode: |
Altitude
coverage = 0-34 km |
| Nadir and limb viewing
(fully targetable) |
| Spectral
region: |
3.2 to 15.4
µm, with four single-line
arrays optimized for different spectral regions |
| Swath: |
5.3 x 8.5
km |
| Spatial
resolution: |
0.53 x 5.3
km |
| Mass: |
385 kg
(allocation) |
| Duty cycle: |
Variable |
| Power: |
334 W
(allocation) |
| Data rate: |
6.2 Mbps
(peak); 4.9 Mbps
(average) |
| Thermal
control by: |
2 Stirling
cycle coolers, heater, radiators |
Thermal
operating range: |
0-30Á C
FOV: +45Á to -72Á along-track, ±45Á cross-track |
| Instrument
IFOV: |
12 x 7.5
mrad |
| Pointing
requirements (platform+instrument, 3s):
|
| Control: |
156 arcsec
(pitch) |
| Knowledge:
|
124 arcsec |
| Stability: |
156 arcsec
(over 50 sec) |
| Physical
size: |
140 x 130
x 135 cm (stowed); 304
x 130 x 135 cm (deployed) |
|
| |
|
Key Facts
+ TES Generates three-dimensional profiles on a global scale of virtually
all infrared-active species from Earth's surface to the lower stratosphere
+ Measurements of gradients of many tropospheric species in order to understand troposphere-stratosphere exchange;
+ Determination of long-term trends in radiative active minor constituents in the lower atmosphere to investigate effects on global radiative balance and atmospheric dynamics.
Multimedia
+ View TES Animation
Related Sites
+ TES Homepage at JPL
+ TES EOS Data
- Facebook
- YouTube
