Toshinobu Machida
Biographic Data
| ID | 5598567 |
|---|---|
| NAME | Toshinobu Machida |
| GIVEN NAMES | Toshinobu |
| FAMILY NAME | Machida |
| SIGNATURE | MACHIDA T |
| AFFILIATIONS | National Institute for Environmental Studies |
| ORCID | 0000-0003-3312-8775 |
| VERIFIED | Yes |
| TOTAL WORKS | 5 |
| TOTAL CITATIONS | 4 |
| WORKS AS AUTHOR | 5 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 1992 |
| LATEST PUBLICATION YEAR | 2020 |
| H-INDEX | 1 |
The Global Methane Budget 2000–2017
Understanding and quantifying the global methane (CH4) budget is important for assessing realistic pathways to mitigate climate change. Atmospheric emissions and concentrations of CH4 continue to increase, making CH4 the second most important human-influenced greenhouse gas in terms of climate forcing, after carbon dioxide (CO2). The relative importance of CH4 compared to CO2 depends on its shorter atmospheric lifetime, stronger warming potential…
Reconciliation of top-down and bottom-up CO 2 fluxes in Siberian larch forest
Carbon dioxide (CO _2 ) fluxes by different methods vary largely at global, regional and local scales. The net CO _2 fluxes by three bottom-up methods (tower observation (TWR), biogeochemical models (GTM), and a data-driven model (SVR)), and an ensemble of atmospheric inversions (top-down method, INV) are compared in Yakutsk, Siberia for 2004–2013. The region is characterized by highly homogeneous larch forest on a flat terrain. The ecosystem aro…
Evaluation of methane emissions from West Siberian wetlands based on inverse modeling
West Siberia contains the largest extent of wetlands in the world, including large peat deposits; the wetland area is equivalent to 27% of the total area of West Siberia.This study used inverse modeling to refine emissions estimates for West Siberia using atmospheric CH 4 observations and two wetland CH 4 emissions inventories: (1) the global wetland emissions dataset of the NASA Goddard Institute for Space Studies (the GISS inventory), which inc…
Regional methane emission from West Siberia mire landscapes
Methane emissions from mires in all climate–vegetation zones of West Siberia (forest steppe, subtaiga, south taiga, middle taiga, north taiga, forest tundra and tundra) were measured using a static chamber method. The observed fluxes varied considerably from small negative values in forested bogs and palsa to hundreds of mgC m − 2 h − 1 in ponds and wet hollows. Observed data were consolidated in the form of the empirical model of methane emissio…
Measurement of 14 C Concentrations of Stratospheric CO 2 by Accelerator Mass Spectrometry
In order to measure the concentrations of anthropogenically influenced gases in the stratosphere, we have collected air samples from the lower stratosphere since 1985, by a balloon-borne cryogenic sampling method, developed at the Institute of Space and Astronautical Science (ISAS). Air samples of ≃16 liters at STP were collected in the stratosphere at altitudes from 18.6 to 30.4 km, over the northeastern part of Japan (39.5°N, 139–142°E), on 1 S…
Measurement of 14 C Concentrations of Stratospheric CO 2 by Accelerator Mass Spectrometry
In order to measure the concentrations of anthropogenically influenced gases in the stratosphere, we have collected air samples from the lower stratosphere since 1985, by a balloon-borne cryogenic sampling method, developed at the Institute of Space and Astronautical Science (ISAS). Air samples of ≃16 liters at STP were collected in the stratosphere at altitudes from 18.6 to 30.4 km, over the northeastern part of Japan (39.5°N, 139–142°E), on 1 S…
Measurement of 14 C Concentrations of Stratospheric CO 2 by Accelerator Mass Spectrometry
In order to measure the concentrations of anthropogenically influenced gases in the stratosphere, we have collected air samples from the lower stratosphere since 1985, by a balloon-borne cryogenic sampling method, developed at the Institute of Space and Astronautical Science (ISAS). Air samples of ≃16 liters at STP were collected in the stratosphere at altitudes from 18.6 to 30.4 km, over the northeastern part of Japan (39.5°N, 139–142°E), on 1 S…
Evaluation of methane emissions from West Siberian wetlands based on inverse modeling
West Siberia contains the largest extent of wetlands in the world, including large peat deposits; the wetland area is equivalent to 27% of the total area of West Siberia.This study used inverse modeling to refine emissions estimates for West Siberia using atmospheric CH 4 observations and two wetland CH 4 emissions inventories: (1) the global wetland emissions dataset of the NASA Goddard Institute for Space Studies (the GISS inventory), which inc…
Regional methane emission from West Siberia mire landscapes
Methane emissions from mires in all climate–vegetation zones of West Siberia (forest steppe, subtaiga, south taiga, middle taiga, north taiga, forest tundra and tundra) were measured using a static chamber method. The observed fluxes varied considerably from small negative values in forested bogs and palsa to hundreds of mgC m − 2 h − 1 in ponds and wet hollows. Observed data were consolidated in the form of the empirical model of methane emissio…
Reconciliation of top-down and bottom-up CO 2 fluxes in Siberian larch forest
Carbon dioxide (CO _2 ) fluxes by different methods vary largely at global, regional and local scales. The net CO _2 fluxes by three bottom-up methods (tower observation (TWR), biogeochemical models (GTM), and a data-driven model (SVR)), and an ensemble of atmospheric inversions (top-down method, INV) are compared in Yakutsk, Siberia for 2004–2013. The region is characterized by highly homogeneous larch forest on a flat terrain. The ecosystem aro…
The Global Methane Budget 2000–2017
Understanding and quantifying the global methane (CH4) budget is important for assessing realistic pathways to mitigate climate change. Atmospheric emissions and concentrations of CH4 continue to increase, making CH4 the second most important human-influenced greenhouse gas in terms of climate forcing, after carbon dioxide (CO2). The relative importance of CH4 compared to CO2 depends on its shorter atmospheric lifetime, stronger warming potential…
Atmospheric and Environmental Gas Dynamics (5 works) · Environmental Science (5 works) · Atmospheric sciences (4 works) · Chemistry (3 works) · Climatology (3 works) · Ecology (3 works) · Geology (3 works) · Boreal (2 works) · Climate change and permafrost (2 works) · Flux (metallurgy (2 works)