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Hirokazu YAMAMOTO JAXA/EORC Toshiaki HASHIMOTO JAXA/EORC Naoki YUDA RESTEC Mieko SEKI RESTEC Yasushi MITOMI RESTEC Hiroki YOSHIOKA Meijo Uni Tamotsu IGARASHI JAXA/EORC The evaluation Of GLI Land Higher Level Products

Hirokazu YAMAMOTOJAXA/EORC Toshiaki HASHIMOTO JAXA/EORC Naoki YUDARESTEC Mieko SEKI RESTEC Yasushi MITOMI RESTEC Hiroki YOSHIOKAMeijo Univ. Tamotsu IGARASHIJAXA/EORC

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Page 1: Hirokazu YAMAMOTOJAXA/EORC Toshiaki HASHIMOTO JAXA/EORC Naoki YUDARESTEC Mieko SEKI RESTEC Yasushi MITOMI RESTEC Hiroki YOSHIOKAMeijo Univ. Tamotsu IGARASHIJAXA/EORC

Hirokazu YAMAMOTO JAXA/EORCToshiaki HASHIMOTO JAXA/EORCNaoki YUDA RESTECMieko SEKI RESTECYasushi MITOMI RESTECHiroki YOSHIOKA Meijo Univ.Tamotsu IGARASHI JAXA/EORC

The evaluationOf

GLI Land Higher Level Products

Page 2: Hirokazu YAMAMOTOJAXA/EORC Toshiaki HASHIMOTO JAXA/EORC Naoki YUDARESTEC Mieko SEKI RESTEC Yasushi MITOMI RESTEC Hiroki YOSHIOKAMeijo Univ. Tamotsu IGARASHIJAXA/EORC

Accuracy Requirement ofAccuracy Requirement ofGLI 1km GLI 1km land standard productsland standard products

Product Product CodeCode

Algorithm Algorithm CodeCode ProductProduct NameName

RequireRequired d AccuracAccuracyy

VGIVGI LTSK9LTSK9

NDVINDVINormalized Difference Normalized Difference

Vegetation IndexVegetation Index 10%10%

EVIEVIEnhanced Vegetation Enhanced Vegetation

IndexIndex 10%10%

ACLCACLC LTSK1LTSK1 ACLCACLCAtmospherically Atmospherically

Corrected ReflectanceCorrected Reflectance 10%10%

PGCPPGCP LTSKGLTSKG ------Precise Geometric Precise Geometric

Corrected ParameterCorrected Parameter <1pixel<1pixel

L2A_LCL2A_LC LTSK10LTSK10 ------ 16-day composite Image16-day composite Image ------

There are no requirements for GLI 250m data, because there is no standard product of 250m higher level product.

Page 3: Hirokazu YAMAMOTOJAXA/EORC Toshiaki HASHIMOTO JAXA/EORC Naoki YUDARESTEC Mieko SEKI RESTEC Yasushi MITOMI RESTEC Hiroki YOSHIOKAMeijo Univ. Tamotsu IGARASHIJAXA/EORC

L2A_LCL2A_LC

GSHHS

L1B-MTIR (ch.30,31,34,35,36)

L1B-SWIR (ch.24,26,27,28,29)

LTSK1

LTSKG

LTSK10

PGCPPGCP

ACLCACLC

LTSK9VGIVGI

Dr. T. Hashimoto(NASDA/EORC)

Dr.A. Huete(UoA)

Dr. S. AckermanDr. K. Stamnes

L3LSMap VGI(L3StaMap)

VGI(L3StaMap)

L1B -VNIR(ch.1,5,8,13,15,17,19)

Cloud Flag[scene]

Cloud Flag[scene]

GCP_lib

Dr.A. Huete(UoA)

Dr.A. Huete(UoA)

Dr.A. Huete(UoA)

Precise GeometricCorrection Paramter

16daysCompositedreflectance

AtmosphericallyCorrectedreflectance(after validation)

GTOPO30

NOAATOVS

Vegetation IndexVGI(NDVI,EVI)

Vegetation IndexVGI(NDVI,EVI)

GLI 1km land algorithm on higher processing and products

Software uses system library developed by Fjt corporation, which depends on the system. These are running on IRIX OS.

Page 4: Hirokazu YAMAMOTOJAXA/EORC Toshiaki HASHIMOTO JAXA/EORC Naoki YUDARESTEC Mieko SEKI RESTEC Yasushi MITOMI RESTEC Hiroki YOSHIOKAMeijo Univ. Tamotsu IGARASHIJAXA/EORC

L2A_LCL2A_LC

GTOPO30

GSHHS

LTSK1

LTSKGA

LTSK10

PGCIPGCP

PGCIPGCP

ACLCACLC

LTSK9VGIVGI

Dr. T. Hashimoto(JAXA/EORC)

Dr.A. Huete(UoA)

L1A -250m(ch. 20,21,22,23,28,29)

GCP_lib

Dr.A. Huete(UoA)

Dr.A. Huete(UoA)

Precise GeometricCorrection Imageand Parameter

16daysCompositedreflectance

AtmosphericallyCorrectedreflectance

GTOPO30

NOAATOVS

Vegetation IndexVGI(NDVI,EVI)

Development of GLI 250m higher level algorithm( Ongoing )

Software development is planned to run on multi-platform.

Similar to MODIS processing

Page 5: Hirokazu YAMAMOTOJAXA/EORC Toshiaki HASHIMOTO JAXA/EORC Naoki YUDARESTEC Mieko SEKI RESTEC Yasushi MITOMI RESTEC Hiroki YOSHIOKAMeijo Univ. Tamotsu IGARASHIJAXA/EORC

GLI L1B images of Land channels 1km

L1B

Ch1 Ch5 Ch8 Ch13 Ch15 Ch17 Ch19

Ch24 Ch26 Ch27 Ch28 Ch29 Ch30 Ch31

Ch34 Ch35 Ch36

250m

L1B

Ch20 Ch21 Ch22 Ch23 Ch28 Ch29

Detection ofAerosol over land EVI EVI EVI

NDVI NDVI

EVI EVINDVI

EVINDVI

Firedetection

Page 6: Hirokazu YAMAMOTOJAXA/EORC Toshiaki HASHIMOTO JAXA/EORC Naoki YUDARESTEC Mieko SEKI RESTEC Yasushi MITOMI RESTEC Hiroki YOSHIOKAMeijo Univ. Tamotsu IGARASHIJAXA/EORC

The Result of Evaluation

Page 7: Hirokazu YAMAMOTOJAXA/EORC Toshiaki HASHIMOTO JAXA/EORC Naoki YUDARESTEC Mieko SEKI RESTEC Yasushi MITOMI RESTEC Hiroki YOSHIOKAMeijo Univ. Tamotsu IGARASHIJAXA/EORC

The accuracy of 1km/250m precise geometric correction is less than 1pixel.

Example of precise geometric corrected image

Page 8: Hirokazu YAMAMOTOJAXA/EORC Toshiaki HASHIMOTO JAXA/EORC Naoki YUDARESTEC Mieko SEKI RESTEC Yasushi MITOMI RESTEC Hiroki YOSHIOKAMeijo Univ. Tamotsu IGARASHIJAXA/EORC

1

2

34

56

7

8

GLI Land Validation Site for L2A_LC, ACLC, and VGI

Grassland type1:Mandalgovi (Mongolia)2:Ambura(Australia)3:Jornada in NM (US)

Forest type4:Mt.Yatsu(Japan)5:Mili (Malaysia)6:Ho Chi Minh (Vietnam)7:Kii(Japan)8:Tomakomai(Japan)

Nakashibetsu : 8/25~8/29

Mt. Yatsu : Apr.( Automatic )

Tottori: Apr. 14~Apr. 18

Togane : Aug. 5~Aug. 7

Mili : Sep. 11~Sep. 30

Australia: March

In this report, validation data obtained in Mt. Yatsu is used.

Page 9: Hirokazu YAMAMOTOJAXA/EORC Toshiaki HASHIMOTO JAXA/EORC Naoki YUDARESTEC Mieko SEKI RESTEC Yasushi MITOMI RESTEC Hiroki YOSHIOKAMeijo Univ. Tamotsu IGARASHIJAXA/EORC

GRATING UV/VISIBLE SPECTRORADIOMETER MS-700 ( Eko instruments CO.,LTD )

Wavelength : 0.35 to 1.05umResolution : 2.4nmAccuracy : <0.3nm

Measurement Method

Ground measurement system (Mt. Yatsu)

Inside of south

Validation in Mt. Yatsu is conducted by Chiba university (Honda Lab.).

Example of measurement system

Validation of ACLC/NDVI/EVI is conducted by Mt. Yatsu data in this report, which is obtained by this instrument.

Page 10: Hirokazu YAMAMOTOJAXA/EORC Toshiaki HASHIMOTO JAXA/EORC Naoki YUDARESTEC Mieko SEKI RESTEC Yasushi MITOMI RESTEC Hiroki YOSHIOKAMeijo Univ. Tamotsu IGARASHIJAXA/EORC

Validation of 1km L2A_LC/ACLC

Mt. Yatsu

N : 35.54.245‘E : 138.19.928'

2003/05/25-2003/06/09

A2GL10305250306090_PL2ALCAE0000001700150.01 A2GL10305250306090_PL2ALCAE0000001700150.01

2003/05/25-2003/06/09

Mt. Yatsu

N : 35.54.245‘E : 138.19.928'

L2A_LC( without atmospheric correction)

ACLC( with atmospheric correction)

Mt.Yatsu data obtained on May 12 and June 9 is used.The composite period is May 25 - June 9 data.

Page 11: Hirokazu YAMAMOTOJAXA/EORC Toshiaki HASHIMOTO JAXA/EORC Naoki YUDARESTEC Mieko SEKI RESTEC Yasushi MITOMI RESTEC Hiroki YOSHIOKAMeijo Univ. Tamotsu IGARASHIJAXA/EORC

0.00

0.10

0.20

0.30

0.40

0.50

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29

GLI 1km channels

Refl

ecta

nce

Mt. Yatsu 030512Mt. Yatsu 030609L2A_LCACLC

The result of L2A_LC/ACLC Evaluation

1050nm1240nm

1380nm

380nm460nm545nm678nm710nm763nm865nm

Ch27 is for water vapor amount. It is difficult to evaluate. If we want to evaluate this ch, it is needed to use RTM

1640nm2210nm

Bugs have been found in LTSK1 in this month. After bug-fixed, ACLC may have higher accuracy than this results (?).

VIS has very large error.NIR is slightly well.

Evaluation No data

Page 12: Hirokazu YAMAMOTOJAXA/EORC Toshiaki HASHIMOTO JAXA/EORC Naoki YUDARESTEC Mieko SEKI RESTEC Yasushi MITOMI RESTEC Hiroki YOSHIOKAMeijo Univ. Tamotsu IGARASHIJAXA/EORC

Ch.22 is saturated Ch.22 is saturated

GLI 250m Composite Image

Mt. Yatsu Mt. Yatsu

May 25, 2003~June 9, 2003(R/G/B=Ch.22/Ch.21/Ch.20)

May 25, 2003~June 9, 2003(R/G/B=Ch.28/Ch.23/Ch.22)

N : 35.54.245‘E : 138.19.928'

N : 35.54.245‘E : 138.19.928'

Mt.Yatsu data obtained on May 12 and June 9 is used.The composite period is May 25 - June 9 data.

Page 13: Hirokazu YAMAMOTOJAXA/EORC Toshiaki HASHIMOTO JAXA/EORC Naoki YUDARESTEC Mieko SEKI RESTEC Yasushi MITOMI RESTEC Hiroki YOSHIOKAMeijo Univ. Tamotsu IGARASHIJAXA/EORC

Before RGB= (Ch.22,21,20) After RGB= (Ch.22,21,20)

May 3, 2003 May 3, 2003

GLI 250m Atmospheric Correction(remove Ozone Absorption, Rayleigh Scattering)

Example of applying 1km ozone & Rayleigh correction algorithm to 250m data

In this report, there is no results of ACLC_250m evaluation. But evaluation will be conducted to this product.

Mt. Yatsu Mt. Yatsu

Page 14: Hirokazu YAMAMOTOJAXA/EORC Toshiaki HASHIMOTO JAXA/EORC Naoki YUDARESTEC Mieko SEKI RESTEC Yasushi MITOMI RESTEC Hiroki YOSHIOKAMeijo Univ. Tamotsu IGARASHIJAXA/EORC

The result of 250m composite Evaluation

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0.10

0.20

0.30

0.40

0.50

20 21 22 23 24 25 26 27 28 29GLI 250m channels

Refl

ecta

nce

Mt. Yatsu 030512Mt. Yatsu 030609L2A_LC_250m

460nm545nm660nm825nm1640nm2210nm

VIS has very large error.NIR is slightly well.Development of ACLC_250mis now ongoing.It looks better than 1km.

Evaluation No data

Page 15: Hirokazu YAMAMOTOJAXA/EORC Toshiaki HASHIMOTO JAXA/EORC Naoki YUDARESTEC Mieko SEKI RESTEC Yasushi MITOMI RESTEC Hiroki YOSHIOKAMeijo Univ. Tamotsu IGARASHIJAXA/EORC

Mt. Yatsu Mt. Yatsu

NDVI EVI

Validation of 1km Vegetation Index NDVI and EVI

N : 35.54.245‘E : 138.19.928'

2003/05/25-2003/06/09 2003/05/25-2003/06/09

N : 35.54.245‘E : 138.19.928'

Mt.Yatsu data obtained on May 12 and June 9 is used.The composite period is May 25 - June 9 data.

Page 16: Hirokazu YAMAMOTOJAXA/EORC Toshiaki HASHIMOTO JAXA/EORC Naoki YUDARESTEC Mieko SEKI RESTEC Yasushi MITOMI RESTEC Hiroki YOSHIOKAMeijo Univ. Tamotsu IGARASHIJAXA/EORC

The coefficient of EVI is for MODIS channels.GLI EVI coefficients are same as MODIS EVI now.Coefficients should be adjusted by validation.

After bug-fixed, EVI may have higher accuracy than this results (??).

Result of 1km NDVI/EVI Evaluation

0.00

0.10

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0.30

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0.60

0.70

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Mt. Yatsu030512

Mt. Yatsu030609

L2A_LC ACLC

Veg

etat

ion

Inde

x

NDVI

EVI

There is big difference between field-based measurement value and product!NDVI products is lower than field-based data,but EVI product is higher than field data.This reason is higher blue channel.

Page 17: Hirokazu YAMAMOTOJAXA/EORC Toshiaki HASHIMOTO JAXA/EORC Naoki YUDARESTEC Mieko SEKI RESTEC Yasushi MITOMI RESTEC Hiroki YOSHIOKAMeijo Univ. Tamotsu IGARASHIJAXA/EORC

250m NDVI/EVI Image

NDVI without atmospheric correctionMay 25, 2003~June 9, 2003

EVI without atmospheric correctionMay 25, 2003~June 9, 2003

Mt. Yatsu

N : 35.54.245‘E : 138.19.928'

Mt. Yatsu

N : 35.54.245‘E : 138.19.928'

Mt.Yatsu data obtained on May 12 and June 9 is used.The composite period is May 25 - June 9 data.

Page 18: Hirokazu YAMAMOTOJAXA/EORC Toshiaki HASHIMOTO JAXA/EORC Naoki YUDARESTEC Mieko SEKI RESTEC Yasushi MITOMI RESTEC Hiroki YOSHIOKAMeijo Univ. Tamotsu IGARASHIJAXA/EORC

Result of 250m NDVI/EVI Evaluation

Coefficients should be also adjusted by validation such as 1km.0.00

0.100.200.300.400.500.600.700.800.901.00

Mt. Yatsu030512

Mt. Yatsu030609

L2A_LC_250m

Veg

etat

ion

Inde

x

NDVI

EVI

There is big difference between field measurement value and product!

NDVI products is lower than field-based data,but EVI product is higher than field data.This reason is higher blue channel.It looks better than 1km.

Page 19: Hirokazu YAMAMOTOJAXA/EORC Toshiaki HASHIMOTO JAXA/EORC Naoki YUDARESTEC Mieko SEKI RESTEC Yasushi MITOMI RESTEC Hiroki YOSHIOKAMeijo Univ. Tamotsu IGARASHIJAXA/EORC

Forest Fires in Eastern Siberia from spring to early summer in Japan

July 1, 2003 Jul 17, 2003 July 26, 2003

Smoke from fires in eastern Russia is drifting into northern Japan through Mongolia, northeast China, and North Korea.

May 8, 2003

We can confirm Sakhalin and northern Hokkaido covered with the smoke from the direction of Far East Russia with GLI visible image. On May 22, the smoke covered all of Hokkaido and reached Tohoku district. This smoke contribute to

atmospheric condition over land in Japan.(??)

Page 20: Hirokazu YAMAMOTOJAXA/EORC Toshiaki HASHIMOTO JAXA/EORC Naoki YUDARESTEC Mieko SEKI RESTEC Yasushi MITOMI RESTEC Hiroki YOSHIOKAMeijo Univ. Tamotsu IGARASHIJAXA/EORC

The Results of evaluation for GLI products(All)The accuracy of near-infrared channels are better than visible channels. It is needed to consider aerosol correction ??

Incidentally, first evaluation of MODIS surface reflectance product had been reported that 443 nm is 50~80%, 555 nm is 5~12%, 670 nm is 10~33% (Vermote, 2000) 。

NDVI products is lower than field-based data,but EVI product is higher than field data.This reason is higher blue channel.

Page 21: Hirokazu YAMAMOTOJAXA/EORC Toshiaki HASHIMOTO JAXA/EORC Naoki YUDARESTEC Mieko SEKI RESTEC Yasushi MITOMI RESTEC Hiroki YOSHIOKAMeijo Univ. Tamotsu IGARASHIJAXA/EORC

Conclusions and Future Works1. Validation will be continued to be conducted for 1km and 250m data by using valid

ation data and other satellite sensor (MODIS etc.).

2. Algorithm revision needs to be also conducted by validation data. For example, EVI coefficient should be adjusted for GLI.

3. The accuracy was estimated. LTSKG is fine. LTSK1 is well working to rayleighy and ozone correction, but Ch27 is water vapor absorption channel, therefore some RTM codes should be applied to validation. The accuracy of near-infrared channels are better than visible channels, and the accuracy of 250m product is better than 1km product. NDVI products is lower than

field-based data, but EVI product is higher than field data.

4. The ACLC product is atmospheric corrected reflectance product for only Rayleigh scattering and ozone absorption. Therefore, It seems to be affected by aerosol (?). Validation of ACLC should be also considered using aerosol model.

5. Bugs have been found in LTSK1. After bug-fixed, ACLC may have higher accuracy than this results.

Page 22: Hirokazu YAMAMOTOJAXA/EORC Toshiaki HASHIMOTO JAXA/EORC Naoki YUDARESTEC Mieko SEKI RESTEC Yasushi MITOMI RESTEC Hiroki YOSHIOKAMeijo Univ. Tamotsu IGARASHIJAXA/EORC

Thank you for your attention

May 2, 2003 GLI 250m R/G/B=28/23/22May 2, 2003 GLI 250m R/G/B=22/21/20

GLI land group : Hirokazu [email protected]