experimental

Entry: TIRS - showing version 3

URI: https://terra-vocabulary.org/ncl/FAIR-Incubator/earthsciencesensors/c_0f46bc5c

The Thermal Infrared Sensor (TIRS) will measure land surface temperature in two thermal bands with a new technology that applies quantum physics to detect heat. TIRS was added to the satellite mission when it became clear that state water resource managers rely on the highly accurate measurements of Earth's thermal energy obtained by LDCM's predecessors, Landsat 5 and Landsat 7, to track how land and water are being used. With nearly 80 percent of the fresh water in the Western U.S. being used to irrigate crops, TIRS will become an invaluable tool for managing water consumption. TIRS uses Quantum Well Infrared Photodetectors (QWIPs) to detect long wavelengths of light emitted by the Earth whose intensity depends on surface temperature. These wavelengths, called thermal infrared, are well beyond the range of human vision. QWIPs are a new, lower-cost alternative to conventional infrared technology and were developed at NASA's Goddard Space Flight Center in Greenbelt, Md. The QWIPs TIRS uses are sensitive to two thermal infrared wavelength bands, helping it separate the temperature of the Earth's surface from that of the atmosphere. Their design operates on the complex principles of quantum mechanics. Gallium arsenide semiconductor chips trap electrons in an energy state 'well' until the electrons are elevated to a higher state by thermal infrared light of a certain wavelength. The elevated electrons create an electrical signal that can be read out and recorded to create a digital image.

Core metadata

is a Concept | Sensor
changed on 1 Dec 2023 10:43:54.384
submitted byViqui Agazzi
accepted on 29 Sep 2022 09:14:26.157

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date accepted 29 Sep 2022 09:14:26.157
date submitted 29 Sep 2022 09:11:14.932
definition
entity TIRS
source graph graph

item class Concept | Sensor
label TIRS
modified 1 Dec 2023 10:43:54.384
notation c_0f46bc5c
register earthsciencesensors
status status experimental
submitter
account name victoria.agazzi@teledetection.fr
name Viqui Agazzi

type register item
version info 3
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Definition

broader Imaging Spectrometers/Radiometers
definition The Thermal Infrared Sensor (TIRS) will measure land surface temperature in two thermal bands with a new technology that applies quantum physics to detect heat. TIRS was added to the satellite mission when it became clear that state water resource managers rely on the highly accurate measurements of Earth's thermal energy obtained by LDCM's predecessors, Landsat 5 and Landsat 7, to track how land and water are being used. With nearly 80 percent of the fresh water in the Western U.S. being used to irrigate crops, TIRS will become an invaluable tool for managing water consumption. TIRS uses Quantum Well Infrared Photodetectors (QWIPs) to detect long wavelengths of light emitted by the Earth whose intensity depends on surface temperature. These wavelengths, called thermal infrared, are well beyond the range of human vision. QWIPs are a new, lower-cost alternative to conventional infrared technology and were developed at NASA's Goddard Space Flight Center in Greenbelt, Md. The QWIPs TIR...
exact match 58207caf 121d 4f88 bd79 11cafefa3f5b
label TIRS
pref label TIRS
type Concept | Sensor