Retrieval of vegetation fluorescence based on GMI remote sensing data

WANG Xiaodi; WANG Xianhua; SHI Hailiang; YE Hanhan; LI Chao; AN Yuan; SUN Erchang

doi:10.3969/j.issn.1673-6141.2024.02.008

Journal of Atmospheric and Environmental Optics, Volume. 19, Issue 2, 221(2024)

Retrieval of vegetation fluorescence based on GMI remote sensing data

WANG Xiaodi1...2,*, WANG Xianhua1, SHI Hailiang1, YE Hanhan1, LI Chao1,2, AN Yuan1,2, and SUN Erchang12 |Show fewer author(s)

Author Affiliations

¹Key Laboratory of Optical Calibration and Characterization, Anhui Institute of Optics and Fine Mechanics, HFIPS,Chinese Academy of Sciences, Hefei 230031, China

²University of Science and Technology of China, Hefei 230026, China

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Figures & Tables(20)

Fig. 1. Retrieval results of OCO-2 data in forest. (a) January 2019; (b) July 2019

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Fig. 2. Retrieval results of GMI data in forest. (a) January 2019; (b) July 2019

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Fig. 3. Results of OCO-2 secondary fluorescence products in forest. (a) January 2019; (b) July 2019

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Fig. 4. Retrieval results of OCO-2 data in desert. (a) January 2019; (b) July 2019

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Fig. 5. Retrieval results of GMI data in desert. (a) January 2019; (b) July 2019

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Fig. 6. Results of OCO-2 secondary fluorescence products in desert. (a) January 2019; (b) July 2019

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Fig. 7. Retrieval results of OCO-2 data in grassland. (a) January 2019; (b) July 2019

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Fig. 8. Retrieval results of GMI data in grassland. (a) January 2019; (b) July 2019

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Fig. 9. Results of OCO-2 secondary fluorescence products in grassland. (a) January 2019; (b) July 2019

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Table 1. Main parameters of GMI
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Table 1. Main parameters of GMI
Band Central wavelength/nm Spectral range/nm Spectral resolution/cm^-1 SNR
Band1 765 759-769 0.60 300
Band2 1575 1568-1583 0.27 300
Band3 1650 1642-1658 0.27 250
Band4 2050 2043-2058 0.27 250

Table 2. Main parameters of OCO-2
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Table 2. Main parameters of OCO-2
Band Central wavelength/nm Spectral range/nm Spectral resolution/cm^-1 SNR
Band1 766 757-775 0.70 250
Band2 1786 591-1621 0.30 300
Band3 2061 2042-2081 0.25 120

Table 3. Retrieval results of the entire forest area in January and July 2019 (unit: w·m^-2·sr^-1·nm^-1)

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Table 3. Retrieval results of the entire forest area in January and July 2019 (unit: w·m^-2·sr^-1·nm^-1)

Time	January 2019	July 2019
GMI retrieval average value	0.8103	0.6126
GMI retrieval standard deviation	0.6780	0.6452
OCO-2 retrieval average value	0.8029	0.5980
OCO-2 retrieval standard deviation	0.7445	0.6314
OCO-2 product average value	0.7632	0.5426
OCO-2 product standard deviation	0.6842	0.56311

Table 4. Comparison of different results of three locations in forest area in January 2019 (unit: w·m^-2·sr^-1·nm^-1)

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Table 4. Comparison of different results of three locations in forest area in January 2019 (unit: w·m^-2·sr^-1·nm^-1)

Location	1	2	3
GMI retrieval average value	0.9155	1.0096	0.7060
GMI retrieval standard deviation	0.6550	0.8009	0.6119
OCO-2 retrieval average value	0.8976	1.0052	0.7216
OCO-2 retrieval standard deviation	0.6412	0.7806	0.5386
OCO-2 product average value	0.8802	0.9496	0.6869
OCO-2 product standard deviation	0.5846	0.6927	0.4802

Table 5. Comparison of different results of three locations in forest area in July 2019 (unit: w·m^-2·sr^-1·nm^-1)

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Table 5. Comparison of different results of three locations in forest area in July 2019 (unit: w·m^-2·sr^-1·nm^-1)

Location	1	2	3
GMI retrieval average value	0.6405	0.6047	0.7161
GMI retrieval standard deviation	0.5879	0.6250	0.5965
OCO-2 retrieval average value	0.6339	0.5419	0.6409
OCO-2 retrieval standard deviation	0.5860	0.6185	0.5887
OCO-2 product average value	0.5950	0.5292	0.6028
OCO-2 product standard deviation	0.5285	0.5466	0.5227

Table 6. Retrieval results of the entire desert area in January and July 2019 (unit: w·m^-2·sr^-1·nm^-1)

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Table 6. Retrieval results of the entire desert area in January and July 2019 (unit: w·m^-2·sr^-1·nm^-1)

Time	January 2019	July 2019
GMI retrieval average value	0.2174	0.1610
GMI retrieval standard deviation	0.4589	0.5228
OCO-2 retrieval average value	0.1027	0.0583
OCO-2 retrieval standard deviation	0.4415	0.5251
OCO-2 product average value	0.0149	-0.0236
OCO-2 product standard deviation	0.3839	0.4492

Table 7. Comparison of different results of three locations in desert area in January 2019 (unit: w·m^-2·sr^-1·nm^-1)

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Table 7. Comparison of different results of three locations in desert area in January 2019 (unit: w·m^-2·sr^-1·nm^-1)

Location	1	2	3
GMI retrieval average value	0.0836	0.0973	0.1485
GMI retrieval standard deviation	0.4183	0.4651	0.4309
OCO-2 retrieval average value	0.0386	0.0721	0.0798
OCO-2 retrieval standard deviation	0.4064	0.4347	0.4255
OCO-2 product average value	0.0077	-0.0244	0.0142
OCO-2 product standard deviation	0.3515	0.3759	0.3724

Table 8. Comparison of different results of three locations in desert area in July 2019 (unit: w·m^-2·sr^-1·nm^-1)

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Table 8. Comparison of different results of three locations in desert area in July 2019 (unit: w·m^-2·sr^-1·nm^-1)

Location	1	2	3
GMI retrieval average value	0.0679	0.0961	0.1044
GMI retrieval standard deviation	0.4682	0.5705	0.4692
OCO-2 retrieval average value	-0.0250	0.0057	0.0513
OCO-2 retrieval standard deviation	0.4489	0.5207	0.5259
OCO-2 product average value	0.0295	-0.0862	-0.0287
OCO-2 product standard deviation	0.3934	0.4457	0.4430

Table 9. Retrieval results of the entire grassland area in January and July 2019 (unit: w·m^-2·sr^-1·nm^-1)

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Table 9. Retrieval results of the entire grassland area in January and July 2019 (unit: w·m^-2·sr^-1·nm^-1)

Time	January 2019	July 2019
GMI retrieval average value	0.2773	0.2585
GMI retrieval standard deviation	0.4039	0.3658
OCO-2 retrieval average value	0.2120	0.2216
OCO-2 retrieval standard deviation	0.3900	0.3586
OCO-2 product average value	0.1183	0.1391
OCO-2 product standard deviation	0.3469	0.3166

Table 10. Comparison of different results of three locations in grassland area in January 2019 (unit: w·m^-2·sr^-1·nm^-1)

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Table 10. Comparison of different results of three locations in grassland area in January 2019 (unit: w·m^-2·sr^-1·nm^-1)

Location	1	2	3
GMI retrieval average value	0.0673	0.1824	0.1968
GMI retrieval standard deviation	0.3550	0.3399	0.3414
OCO-2 retrieval average value	0.2273	0.1667	0.1869
OCO-2 retrieval standard deviation	0.3468	0.2945	0.3401
OCO-2 product average value	0.1519	0.1396	0.1305
OCO-2 product standard deviation	0.3196	0.2658	0.3115

Table 11. Comparison of different results of three locations in grassland area in July 2019 (unit: w·m^-2·sr^-1·nm^-1)

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Table 11. Comparison of different results of three locations in grassland area in July 2019 (unit: w·m^-2·sr^-1·nm^-1)

Location	1	2	3
GMI retrieval average value	0.3220	0.7521	0.5842
GMI retrieval standard deviation	0.4897	0.4328	0.4944
OCO-2 retrieval average value	0.4757	0.7383	0.5633
OCO-2 retrieval standard deviation	0.4625	0.3817	0.4909
OCO-2 product average value	0.4084	0.6962	0.4500
OCO-2 product standard deviation	0.4326	0.3516	0.4372

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Xiaodi WANG, Xianhua WANG, Hailiang SHI, Hanhan YE, Chao LI, Yuan AN, Erchang SUN. Retrieval of vegetation fluorescence based on GMI remote sensing data[J]. Journal of Atmospheric and Environmental Optics, 2024, 19(2): 221

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Paper Information

Category:

Received: Mar. 21, 2022

Accepted: --

Published Online: Jun. 24, 2024

The Author Email: WANG Xiaodi (wxd1002@mail.ustc.edu.cn)

DOI:10.3969/j.issn.1673-6141.2024.02.008

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Main parameters of GMI

Table 1. Main parameters of GMI

Table 2. Main parameters of OCO-2

Table 2. Main parameters of OCO-2

Table 3. Retrieval results of the entire forest area in January and July 2019 (unit: w·m-2·sr-1·nm-1)

Table 3. Retrieval results of the entire forest area in January and July 2019 (unit: w·m-2·sr-1·nm-1)

Table 4. Comparison of different results of three locations in forest area in January 2019 (unit: w·m-2·sr-1·nm-1)

Table 4. Comparison of different results of three locations in forest area in January 2019 (unit: w·m-2·sr-1·nm-1)

Table 5. Comparison of different results of three locations in forest area in July 2019 (unit: w·m-2·sr-1·nm-1)

Table 5. Comparison of different results of three locations in forest area in July 2019 (unit: w·m-2·sr-1·nm-1)

Table 6. Retrieval results of the entire desert area in January and July 2019 (unit: w·m-2·sr-1·nm-1)

Table 6. Retrieval results of the entire desert area in January and July 2019 (unit: w·m-2·sr-1·nm-1)

Table 7. Comparison of different results of three locations in desert area in January 2019 (unit: w·m-2·sr-1·nm-1)

Table 7. Comparison of different results of three locations in desert area in January 2019 (unit: w·m-2·sr-1·nm-1)

Table 8. Comparison of different results of three locations in desert area in July 2019 (unit: w·m-2·sr-1·nm-1)

Table 8. Comparison of different results of three locations in desert area in July 2019 (unit: w·m-2·sr-1·nm-1)

Table 9. Retrieval results of the entire grassland area in January and July 2019 (unit: w·m-2·sr-1·nm-1)

Table 9. Retrieval results of the entire grassland area in January and July 2019 (unit: w·m-2·sr-1·nm-1)

Table 10. Comparison of different results of three locations in grassland area in January 2019 (unit: w·m-2·sr-1·nm-1)

Table 10. Comparison of different results of three locations in grassland area in January 2019 (unit: w·m-2·sr-1·nm-1)

Table 11. Comparison of different results of three locations in grassland area in July 2019 (unit: w·m-2·sr-1·nm-1)

Table 11. Comparison of different results of three locations in grassland area in July 2019 (unit: w·m-2·sr-1·nm-1)

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Table 3. Retrieval results of the entire forest area in January and July 2019 (unit: w·m^-2·sr^-1·nm^-1)

Table 3. Retrieval results of the entire forest area in January and July 2019 (unit: w·m^-2·sr^-1·nm^-1)

Table 4. Comparison of different results of three locations in forest area in January 2019 (unit: w·m^-2·sr^-1·nm^-1)

Table 4. Comparison of different results of three locations in forest area in January 2019 (unit: w·m^-2·sr^-1·nm^-1)

Table 5. Comparison of different results of three locations in forest area in July 2019 (unit: w·m^-2·sr^-1·nm^-1)

Table 5. Comparison of different results of three locations in forest area in July 2019 (unit: w·m^-2·sr^-1·nm^-1)

Table 6. Retrieval results of the entire desert area in January and July 2019 (unit: w·m^-2·sr^-1·nm^-1)

Table 6. Retrieval results of the entire desert area in January and July 2019 (unit: w·m^-2·sr^-1·nm^-1)

Table 7. Comparison of different results of three locations in desert area in January 2019 (unit: w·m^-2·sr^-1·nm^-1)

Table 7. Comparison of different results of three locations in desert area in January 2019 (unit: w·m^-2·sr^-1·nm^-1)

Table 8. Comparison of different results of three locations in desert area in July 2019 (unit: w·m^-2·sr^-1·nm^-1)

Table 8. Comparison of different results of three locations in desert area in July 2019 (unit: w·m^-2·sr^-1·nm^-1)

Table 9. Retrieval results of the entire grassland area in January and July 2019 (unit: w·m^-2·sr^-1·nm^-1)

Table 9. Retrieval results of the entire grassland area in January and July 2019 (unit: w·m^-2·sr^-1·nm^-1)

Table 10. Comparison of different results of three locations in grassland area in January 2019 (unit: w·m^-2·sr^-1·nm^-1)

Table 10. Comparison of different results of three locations in grassland area in January 2019 (unit: w·m^-2·sr^-1·nm^-1)

Table 11. Comparison of different results of three locations in grassland area in July 2019 (unit: w·m^-2·sr^-1·nm^-1)

Table 11. Comparison of different results of three locations in grassland area in July 2019 (unit: w·m^-2·sr^-1·nm^-1)