The Solar-Induced Chlorophyll Fluorescence Imaging Spectrometer (SIFIS) Onboard the First Terrestrial Ecosystem Carbon Inventory Satellite (TECIS-1): Specifications and Prospects
The global monitoring of solar-induced chlorophyll fluorescence (SIF) using satellite-based observations provides a new way of monitoring the status of terrestrial vegetation photosynthesis on a global scale. Several global SIF products that make use of atmospheric satellite data have been successfu...
Main Authors: | , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2020-02-01
|
Series: | Sensors |
Subjects: | |
Online Access: | https://www.mdpi.com/1424-8220/20/3/815 |
id |
doaj-bb3ce0f88e594a868319608ff26404a0 |
---|---|
record_format |
Article |
spelling |
doaj-bb3ce0f88e594a868319608ff26404a02020-11-25T02:03:23ZengMDPI AGSensors1424-82202020-02-0120381510.3390/s20030815s20030815The Solar-Induced Chlorophyll Fluorescence Imaging Spectrometer (SIFIS) Onboard the First Terrestrial Ecosystem Carbon Inventory Satellite (TECIS-1): Specifications and ProspectsShanshan Du0Liangyun Liu1Xinjie Liu2Xinwei Zhang3Xianlian Gao4Weigang Wang5Key Laboratory of Digital Earth Science, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, ChinaKey Laboratory of Digital Earth Science, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, ChinaKey Laboratory of Digital Earth Science, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, ChinaBeijing Institute of Spacecraft System Engineering, Beijing 100094, ChinaAcademy of Inventory and Planning, National Forestry and Grassland Administration, Beijing 100714, ChinaBeijing Institute of Space Mechanics and Electricity, China Academy of Space Technology, Beijing 100094, ChinaThe global monitoring of solar-induced chlorophyll fluorescence (SIF) using satellite-based observations provides a new way of monitoring the status of terrestrial vegetation photosynthesis on a global scale. Several global SIF products that make use of atmospheric satellite data have been successfully developed in recent decades. The Terrestrial Ecosystem Carbon Inventory Satellite (TECIS-1), the first Chinese terrestrial ecosystem carbon inventory satellite, which is due to be launched in 2021, will carry an imaging spectrometer specifically designed for SIF monitoring. Here, we use an extensive set of simulated data derived from the MODerate resolution atmospheric TRANsmission 5 (MODTRAN 5) and Soil Canopy Observation Photosynthesis and Energy (SCOPE) models to evaluate and optimize the specifications of the SIF Imaging Spectrometer (SIFIS) onboard TECIS for accurate SIF retrievals. The wide spectral range of 670−780 nm was recommended to obtain the SIF at both the red and far-red bands. The results illustrate that the combination of a spectral resolution (SR) of 0.1 nm and a signal-to-noise ratio (SNR) of 127 performs better than an SR of 0.3 nm and SNR of 322 or an SR of 0.5 nm and SNR of 472 nm. The resulting SIF retrievals have a root-mean-squared (RMS) diff* value of 0.15 mW m<sup>−2</sup> sr<sup>−1</sup> nm<sup>−1</sup> at the far-red band and 0.43 mW m<sup>−2</sup> sr<sup>−1</sup> nm<sup>−1</sup> at the red band. This compares with 0.20 and 0.26 mW m<sup>−2</sup> sr<sup>−1</sup> nm<sup>−1</sup> at the far-red band and 0.62 and 1.30 mW m<sup>−2</sup> sr<sup>−1</sup> nm<sup>−1</sup> at the red band for the other two configurations described above. Given an SR of 0.3 nm, the increase in the SNR can also improve the SIF retrieval at both bands. If the SNR is improved to 450, the RMS diff* will be 0.17 mW m<sup>−2</sup> sr<sup>−1</sup> nm<sup>−1</sup> at the far-red band and 0.47 mW m<sup>−2</sup> sr<sup>−1</sup> nm<sup>−1</sup> at the red band. Therefore, the SIFIS onboard TECIS-1 will provide another set of observations dedicated to monitoring SIF at the global scale, which will benefit investigations of terrestrial vegetation photosynthesis from space.https://www.mdpi.com/1424-8220/20/3/815solar-induced chlorophyll fluorescence (sif)terrestrial ecosystem carbon inventory satellite (tecis-1)sif imaging spectrometer (sifis) |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Shanshan Du Liangyun Liu Xinjie Liu Xinwei Zhang Xianlian Gao Weigang Wang |
spellingShingle |
Shanshan Du Liangyun Liu Xinjie Liu Xinwei Zhang Xianlian Gao Weigang Wang The Solar-Induced Chlorophyll Fluorescence Imaging Spectrometer (SIFIS) Onboard the First Terrestrial Ecosystem Carbon Inventory Satellite (TECIS-1): Specifications and Prospects Sensors solar-induced chlorophyll fluorescence (sif) terrestrial ecosystem carbon inventory satellite (tecis-1) sif imaging spectrometer (sifis) |
author_facet |
Shanshan Du Liangyun Liu Xinjie Liu Xinwei Zhang Xianlian Gao Weigang Wang |
author_sort |
Shanshan Du |
title |
The Solar-Induced Chlorophyll Fluorescence Imaging Spectrometer (SIFIS) Onboard the First Terrestrial Ecosystem Carbon Inventory Satellite (TECIS-1): Specifications and Prospects |
title_short |
The Solar-Induced Chlorophyll Fluorescence Imaging Spectrometer (SIFIS) Onboard the First Terrestrial Ecosystem Carbon Inventory Satellite (TECIS-1): Specifications and Prospects |
title_full |
The Solar-Induced Chlorophyll Fluorescence Imaging Spectrometer (SIFIS) Onboard the First Terrestrial Ecosystem Carbon Inventory Satellite (TECIS-1): Specifications and Prospects |
title_fullStr |
The Solar-Induced Chlorophyll Fluorescence Imaging Spectrometer (SIFIS) Onboard the First Terrestrial Ecosystem Carbon Inventory Satellite (TECIS-1): Specifications and Prospects |
title_full_unstemmed |
The Solar-Induced Chlorophyll Fluorescence Imaging Spectrometer (SIFIS) Onboard the First Terrestrial Ecosystem Carbon Inventory Satellite (TECIS-1): Specifications and Prospects |
title_sort |
solar-induced chlorophyll fluorescence imaging spectrometer (sifis) onboard the first terrestrial ecosystem carbon inventory satellite (tecis-1): specifications and prospects |
publisher |
MDPI AG |
series |
Sensors |
issn |
1424-8220 |
publishDate |
2020-02-01 |
description |
The global monitoring of solar-induced chlorophyll fluorescence (SIF) using satellite-based observations provides a new way of monitoring the status of terrestrial vegetation photosynthesis on a global scale. Several global SIF products that make use of atmospheric satellite data have been successfully developed in recent decades. The Terrestrial Ecosystem Carbon Inventory Satellite (TECIS-1), the first Chinese terrestrial ecosystem carbon inventory satellite, which is due to be launched in 2021, will carry an imaging spectrometer specifically designed for SIF monitoring. Here, we use an extensive set of simulated data derived from the MODerate resolution atmospheric TRANsmission 5 (MODTRAN 5) and Soil Canopy Observation Photosynthesis and Energy (SCOPE) models to evaluate and optimize the specifications of the SIF Imaging Spectrometer (SIFIS) onboard TECIS for accurate SIF retrievals. The wide spectral range of 670−780 nm was recommended to obtain the SIF at both the red and far-red bands. The results illustrate that the combination of a spectral resolution (SR) of 0.1 nm and a signal-to-noise ratio (SNR) of 127 performs better than an SR of 0.3 nm and SNR of 322 or an SR of 0.5 nm and SNR of 472 nm. The resulting SIF retrievals have a root-mean-squared (RMS) diff* value of 0.15 mW m<sup>−2</sup> sr<sup>−1</sup> nm<sup>−1</sup> at the far-red band and 0.43 mW m<sup>−2</sup> sr<sup>−1</sup> nm<sup>−1</sup> at the red band. This compares with 0.20 and 0.26 mW m<sup>−2</sup> sr<sup>−1</sup> nm<sup>−1</sup> at the far-red band and 0.62 and 1.30 mW m<sup>−2</sup> sr<sup>−1</sup> nm<sup>−1</sup> at the red band for the other two configurations described above. Given an SR of 0.3 nm, the increase in the SNR can also improve the SIF retrieval at both bands. If the SNR is improved to 450, the RMS diff* will be 0.17 mW m<sup>−2</sup> sr<sup>−1</sup> nm<sup>−1</sup> at the far-red band and 0.47 mW m<sup>−2</sup> sr<sup>−1</sup> nm<sup>−1</sup> at the red band. Therefore, the SIFIS onboard TECIS-1 will provide another set of observations dedicated to monitoring SIF at the global scale, which will benefit investigations of terrestrial vegetation photosynthesis from space. |
topic |
solar-induced chlorophyll fluorescence (sif) terrestrial ecosystem carbon inventory satellite (tecis-1) sif imaging spectrometer (sifis) |
url |
https://www.mdpi.com/1424-8220/20/3/815 |
work_keys_str_mv |
AT shanshandu thesolarinducedchlorophyllfluorescenceimagingspectrometersifisonboardthefirstterrestrialecosystemcarboninventorysatellitetecis1specificationsandprospects AT liangyunliu thesolarinducedchlorophyllfluorescenceimagingspectrometersifisonboardthefirstterrestrialecosystemcarboninventorysatellitetecis1specificationsandprospects AT xinjieliu thesolarinducedchlorophyllfluorescenceimagingspectrometersifisonboardthefirstterrestrialecosystemcarboninventorysatellitetecis1specificationsandprospects AT xinweizhang thesolarinducedchlorophyllfluorescenceimagingspectrometersifisonboardthefirstterrestrialecosystemcarboninventorysatellitetecis1specificationsandprospects AT xianliangao thesolarinducedchlorophyllfluorescenceimagingspectrometersifisonboardthefirstterrestrialecosystemcarboninventorysatellitetecis1specificationsandprospects AT weigangwang thesolarinducedchlorophyllfluorescenceimagingspectrometersifisonboardthefirstterrestrialecosystemcarboninventorysatellitetecis1specificationsandprospects AT shanshandu solarinducedchlorophyllfluorescenceimagingspectrometersifisonboardthefirstterrestrialecosystemcarboninventorysatellitetecis1specificationsandprospects AT liangyunliu solarinducedchlorophyllfluorescenceimagingspectrometersifisonboardthefirstterrestrialecosystemcarboninventorysatellitetecis1specificationsandprospects AT xinjieliu solarinducedchlorophyllfluorescenceimagingspectrometersifisonboardthefirstterrestrialecosystemcarboninventorysatellitetecis1specificationsandprospects AT xinweizhang solarinducedchlorophyllfluorescenceimagingspectrometersifisonboardthefirstterrestrialecosystemcarboninventorysatellitetecis1specificationsandprospects AT xianliangao solarinducedchlorophyllfluorescenceimagingspectrometersifisonboardthefirstterrestrialecosystemcarboninventorysatellitetecis1specificationsandprospects AT weigangwang solarinducedchlorophyllfluorescenceimagingspectrometersifisonboardthefirstterrestrialecosystemcarboninventorysatellitetecis1specificationsandprospects |
_version_ |
1724948647796277248 |