Latest Update：2025/10/28 16:13:05

RAJA NAYAGAM Lorna

Researcher Name: RAJA NAYAGAM Lorna

Div (Section) name/title: Earth System Division（Satellite Observation Center）／Research Associate

Research Subject

Fiscal Year: 2025
- 27253 : Satellite Observation Project
Fiscal Year: 2024
- 26874 : Satellite Observation Project
Fiscal Year: 2023
- 26459 : Satellite Observation Project

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Research Result (Publication)

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Original Paper

Original Paper
High-Resolution Inversion of GOSAT-2 Retrievals for Sectoral Methane Emission Estimates During 2019–2022: A Consistency Analysis with GOSAT Inversion

Presenter : Janardanan Achari R., Maksyutov S., Wang F., Raja Nayagam L., Yoshida Y., Xin L., Matsunaga T.
Title : , Remote Sensing (2025)
Original Paper
Indian Land Carbon Sink Estimated from Surface and GOSAT Observations

Presenter : Raja Nayagam L., Maksyutov S., Janardanan Achari R., Oda T., Tiwari Y.K., Sreenivas G., Datye A., Jain C.D., Ratnam M.V., Sinha V., Hakkim, H., Terao Y., Naja M., Ahmed, M. K., Mukai H., Zeng J., Kaiser J.W., Someya Y., Yoshida Y., Matsunaga T.
Title : , Remote Sensing (2025)
Original Paper
Country-level methane emissions and their sectoral trends during 2009-2020 estimated by high-resolution inversion of GOSAT and surface observations

Presenter : Janardanan Achari R., Maksyutov S., Wang F., Raja Nayagam L., Sahu S.K., Mangaraj P., Saunois M., Lan X., Matsunaga T.
Title : , Environmental Research Letters, 19(3): (2024)
Original Paper
A top-down estimation of subnational CO2 budget using a global high-resolution inverse model with data from regional surface networks

Presenter : Raja Nayagam L., Maksyutov S., Oda T., Janardanan Achari R., Trisolino P., Zeng J., Kaiser J.W., Matsunaga T.
Title : , Environmental Research Letters, 19(1): (2023)

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High-Resolution Inversion of GOSAT-2 Retrievals for Sectoral Methane Emission Estimates During 2019–2022: A Consistency Analysis with GOSAT Inversion

Presenter : Janardanan Achari R., Maksyutov S., Wang F., Raja Nayagam L., Yoshida Y., Xin L., Matsunaga T.
Title : , Remote Sensing (2025)
Indian Land Carbon Sink Estimated from Surface and GOSAT Observations

Presenter : Raja Nayagam L., Maksyutov S., Janardanan Achari R., Oda T., Tiwari Y.K., Sreenivas G., Datye A., Jain C.D., Ratnam M.V., Sinha V., Hakkim, H., Terao Y., Naja M., Ahmed, M. K., Mukai H., Zeng J., Kaiser J.W., Someya Y., Yoshida Y., Matsunaga T.
Title : , Remote Sensing (2025)
Country-level methane emissions and their sectoral trends during 2009-2020 estimated by high-resolution inversion of GOSAT and surface observations

Presenter : Janardanan Achari R., Maksyutov S., Wang F., Raja Nayagam L., Sahu S.K., Mangaraj P., Saunois M., Lan X., Matsunaga T.
Title : , Environmental Research Letters, 19(3): (2024)
A top-down estimation of subnational CO2 budget using a global high-resolution inverse model with data from regional surface networks

Presenter : Raja Nayagam L., Maksyutov S., Oda T., Janardanan Achari R., Trisolino P., Zeng J., Kaiser J.W., Matsunaga T.
Title : , Environmental Research Letters, 19(1): (2023)

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Research Result (Presentation)

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Research Presentation

Research Presentation
Regional carbon dioxide fluxes and climate driven flux anomalies estimated with a global high-resolution inverse model using surface and GOSAT data in 2010-2022

Presenter : Maksyutov S., Janardanan Achari R., Raja Nayagam L., Oda T., Zeng J., Machida T., Matsunaga T., Yoshida Y.
Name of Society : 11th International Carbon Dioxide Conference (2024)
Research Presentation
Quantifying subnational CO2 emissions by assimilating regional measurements in a global high-resolution inverse model

Presenter : Raja Nayagam L., Maksyutov S., Oda T., Janardanan Achari R., Yoshida Y., Trisolino P., Zeng J., Kaiser J., Matsunaga T.
Name of Society : 11th International Carbon Dioxide Conference (2024)
Research Presentation
Comparison of global sectoral methane emissions inferred by high-resolution inversion of observations from GOSAT and GOSAT-2 during 2019-2020

Presenter : Janardanan Achari R., Maksyutov S., Wang F., Raja Nayagam L., Saunois M., Lan X., Matsunaga T.
Name of Society : 20th International Workshop on Greenhouse Gas Measurements from Space(IWGGMS-20) (2024)
Name of Proceedings : -
Research Presentation
Country-level estimates of sectoral anthropogenic methane emissions by inversion of GOSAT and surface observations, and their decadal trends

Presenter : Janardanan Achari R., Maksyutov S., Wang F., Raja Nayagam L., Sahu K.J., Poonam M., Saunois M., Xin L., Matsunaga T.
Name of Society : Japan Geoscience Union Meeting 2024 (2024)
Name of Proceedings : 同予稿集
Research Presentation
Estimating regional CO2 emissions utilizing data from surface and satellite observations over China

Presenter : Raja Nayagam L., Maksyutov S., Oda T., Janardanan Achari R., Yoshida Y., Kaiser J.W., Matsunaga T.
Name of Society : 20th International Workshop on Greenhouse Gas Measurements from Space(IWGGMS-20) (2024)
Name of Proceedings : Abstracts
Research Presentation
Regional CO2 fluxes and climate-driven anomalies estimated with global high-resolution inverse model using surface and GOSAT data in 2010-2022

Presenter : Maksyutov S., Oda T., Janardanan Achari R., Raja Nayagam L., Zeng J., Lan X., Machida T., Yoshida Y., Matsunaga T.
Name of Society : 20th International Workshop on Greenhouse Gas Measurements from Space(IWGGMS-20) (2024)
Name of Proceedings : Abstracts

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Country-level estimates of sectoral anthropogenic methane emissions by inversion of GOSAT and surface observations, and their decadal trends

Presenter : Janardanan Achari R., Maksyutov S., Wang F., Raja Nayagam L., Sahu K.J., Poonam M., Saunois M., Xin L., Matsunaga T.
Name of Society : Japan Geoscience Union Meeting 2024 (2024)
Name of Proceedings : 同予稿集
Regional carbon dioxide fluxes and climate driven flux anomalies estimated with a global high-resolution inverse model using surface and GOSAT data in 2010-2022

Presenter : Maksyutov S., Janardanan Achari R., Raja Nayagam L., Oda T., Zeng J., Machida T., Matsunaga T., Yoshida Y.
Name of Society : 11th International Carbon Dioxide Conference (2024)
Quantifying subnational CO2 emissions by assimilating regional measurements in a global high-resolution inverse model

Presenter : Raja Nayagam L., Maksyutov S., Oda T., Janardanan Achari R., Yoshida Y., Trisolino P., Zeng J., Kaiser J., Matsunaga T.
Name of Society : 11th International Carbon Dioxide Conference (2024)
Comparison of global sectoral methane emissions inferred by high-resolution inversion of observations from GOSAT and GOSAT-2 during 2019-2020

Presenter : Janardanan Achari R., Maksyutov S., Wang F., Raja Nayagam L., Saunois M., Lan X., Matsunaga T.
Name of Society : 20th International Workshop on Greenhouse Gas Measurements from Space(IWGGMS-20) (2024)
Name of Proceedings : -
Estimating regional CO2 emissions utilizing data from surface and satellite observations over China

Presenter : Raja Nayagam L., Maksyutov S., Oda T., Janardanan Achari R., Yoshida Y., Kaiser J.W., Matsunaga T.
Name of Society : 20th International Workshop on Greenhouse Gas Measurements from Space(IWGGMS-20) (2024)
Name of Proceedings : Abstracts
Regional CO2 fluxes and climate-driven anomalies estimated with global high-resolution inverse model using surface and GOSAT data in 2010-2022

Presenter : Maksyutov S., Oda T., Janardanan Achari R., Raja Nayagam L., Zeng J., Lan X., Machida T., Yoshida Y., Matsunaga T.
Name of Society : 20th International Workshop on Greenhouse Gas Measurements from Space(IWGGMS-20) (2024)
Name of Proceedings : Abstracts

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RAJA NAYAGAM Lorna

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