Ranga B Myneni
Biographic Data
| ID | 6819620 |
|---|---|
| NAME | Ranga B Myneni |
| GIVEN NAMES | Ranga B |
| FAMILY NAME | Myneni |
| SIGNATURE | MYNENI R B |
| AFFILIATIONS | Boston University |
| ORCID | 0000-0002-0234-6393 |
| VERIFIED | Yes |
| TOTAL WORKS | 21 |
| TOTAL CITATIONS | 42 |
| AUTHOR COUNT | 21 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1997 |
| LATEST PUBLICATION YEAR | 2025 |
| H-INDEX | 2 |
Precipitation leads the long-term vegetation increase in the conterminous United States drylands
Drylands, encompassing over 40% of the conterminous United States (CONUS), are crucial to the global carbon cycle and highly susceptible to climate change. However, Earth system models offer conflicting projections of future drought and vegetation activity in North America, and in-depth analyses of the long-term changes in greenness and its relationship with underlying climate drivers, considering both spatial and temporal variations at the ecosy…
The direct and indirect effects of the environmental factors on global terrestrial gross primary productivity over the past four decades
Gross primary productivity (GPP) is jointly controlled by the structural and physiological properties of the vegetation canopy and the changing environment. Recent studies showed notable changes in global GPP during recent decades and attributed it to dramatic environmental changes. Environmental changes can affect GPP by altering not only the biogeochemical characteristics of the photosynthesis system (direct effects) but also the structure of t…
Climate-driven land surface phenology advance is overestimated due to ignoring land cover changes
Global warming has led to earlier spring green-up dates (GUDs) in recent decades with significant consequences for global carbon and hydrologic cycles. In addition to changes in climate, land cover change (LCC), including interchanges between vegetation and non-vegetation, and among plants with different functional traits, may also affect GUD. Here, we analyzed how satellite-derived GUD from 1992 to 2020 was impacted by changes in temperature, pr…
Characteristics, drivers and feedbacks of global greening
China and India lead in greening of the world through land-use management
Increased vegetation growth and carbon stock in China karst via ecological engineering
Was the extreme Northern Hemisphere greening in 2015 predictable
The year 2015 was, at the time, the warmest since 1880, and many regions in the Northern Hemisphere (NH) registered record breaking annual temperatures. Simultaneously, a remarkable and widespread growing season greening was observed over most of the NH in the record from the Moderate Resolution Imaging Spectroradiometer (MODIS) normalized difference vegetation index (NDVI). While the response of vegetation to climate change (i.e. the long term t…
Changes in growing season duration and productivity of northern vegetation inferred from long-term remote sensing data
Monitoring and understanding climate-induced changes in the boreal and arctic vegetation is critical \nto aid in prognosticating their future.Weused a 33 year (1982–2014) long record of satellite \nobservations to robustly assess changes in metrics of growing season (onset: SOS, end: EOS and length: \nLOS) and seasonal total gross primary productivity. Particular attention was paid to evaluating the \naccuracy of these metrics by comparing them t…
Satellite observation of tropical forest seasonality: Spatial patterns of carbon exchange in Amazonia
Determining the seasonality of terrestrial carbon exchange with the atmosphere remains a challenge in tropical forests because of the heterogeneity of ecosystem and climate. The magnitude and spatial variability of this flux are unknown, particularly in Amazonia where empirical upscaling approaches from spatially sparse in situ measurements and simulations from process-based models have been challenged in recent scientific literature. Here, we us…
Sunlight mediated seasonality in canopy structure and photosynthetic activity of Amazonian rainforests
Resolving the debate surrounding the nature and controls of seasonal variation in the structure and metabolism of Amazonian rainforests is critical to understanding their response to climate change. In situ studies have observed higher photosynthetic and evapotranspiration rates, increased litterfall and leaf flushing during the Sunlight-rich dry season. Satellite data also indicated higher greenness level, a proven surrogate of photosynthetic ca…
Contribution of semi-arid ecosystems to interannual variability of the global carbon cycle
Surface Urban Heat Island Across 419 Global Big Cities
Urban heat island is among the most evident aspects of human impacts on the earth system. Here we assess the diurnal and seasonal variation of surface urban heat island intensity (SUHII) defined as the surface temperature difference between urban area and suburban area measured from the MODIS. Differences in SUHII are analyzed across 419 global big cities, and we assess several potential biophysical and socio-economic driving factors. Across the …
Interpretation of variations in Modis-measured greenness levels of Amazon forests during 2000 to 2009
This work investigates variations in satellite-measured greenness of Amazon forests using ten years of NASA Moderate Resolution Imaging Spectroradiometer (MODIS) enhanced vegetation index (EVI) data. Corruption of optical remote sensing data with clouds and aerosols is prevalent in this region; filtering corrupted data causes spatial sampling constraints, as well as reducing the record length, which introduces large biases in estimates of greenne…
Global evapotranspiration over the past three decades: Estimation based on the water balance equation combined with empirical models
Author: Zeng, Zhenzhong et al.; Genre: Journal Article; Finally published : 2012; Title: Global evapotranspiration over the past three decades: estimation based on the water balance equation combined with empirical models
Spatio-temporal patterns of the area experiencing negative vegetation growth anomalies in China over the last three decades
Recent change of vegetation growth trend in China
Using satellite-derived normalized difference vegetation index (NDVI) data, several previous studies have indicated that vegetation growth significantly increased in most areas of China during the period 1982–99. In this letter, we extended the study period to 2010. We found that at the national scale the growing season (April–October) NDVI significantly increased by 0.0007 yr −1 from 1982 to 2010, but the increasing trend in NDVI over the last d…
Valuing ecosystem services: A shadow price for net primary production
Evidence for a significant urbanization effect on climate in China
China has experienced rapid urbanization and dramatic economic growth since its reform process started in late 1978. In this article, we present evidence for a significant urbanization effect on climate based on analysis of impacts of land-use changes on surface temperature in southeast China, where rapid urbanization has occurred. Our estimated warming of mean surface temperature of 0.05°C per decade attributable to urbanization is much larger t…
Climate-Driven Increases in Global Terrestrial Net Primary Production from 1982 to 1999
Recent climatic changes have enhanced plant growth in northern mid-latitudes and high latitudes. However, a comprehensive analysis of the impact of global climatic changes on vegetation productivity has not before been expressed in the context of variable limiting factors to plant growth. We present a global investigation of vegetation responses to climatic changes by analyzing 18 years (1982 to 1999) of both climatic data and satellite observati…
Variations in northern vegetation activity inferred from satellite data of vegetation index during 1981 to 1999
The northern high latitudes have warmed by about 0.8°C since the early 1970s, but not all areas have warmed uniformly [ Hansen et al ., 1999]. There is warming in most of Eurasia, but the warming rate in the United States is smaller than in most of the world, and a slight cooling is observed in the eastern United States over the past 50 years. These changes beg the question, can we detect the biotic response to temperature changes? Here we presen…
Increased plant growth in the northern high latitudes from 1981 to 1991
Increased plant growth in the northern high latitudes from 1981 to 1991
Variations in northern vegetation activity inferred from satellite data of vegetation index during 1981 to 1999
The northern high latitudes have warmed by about 0.8°C since the early 1970s, but not all areas have warmed uniformly [ Hansen et al ., 1999]. There is warming in most of Eurasia, but the warming rate in the United States is smaller than in most of the world, and a slight cooling is observed in the eastern United States over the past 50 years. These changes beg the question, can we detect the biotic response to temperature changes? Here we presen…
Climate-Driven Increases in Global Terrestrial Net Primary Production from 1982 to 1999
Recent climatic changes have enhanced plant growth in northern mid-latitudes and high latitudes. However, a comprehensive analysis of the impact of global climatic changes on vegetation productivity has not before been expressed in the context of variable limiting factors to plant growth. We present a global investigation of vegetation responses to climatic changes by analyzing 18 years (1982 to 1999) of both climatic data and satellite observati…
Evidence for a significant urbanization effect on climate in China
China has experienced rapid urbanization and dramatic economic growth since its reform process started in late 1978. In this article, we present evidence for a significant urbanization effect on climate based on analysis of impacts of land-use changes on surface temperature in southeast China, where rapid urbanization has occurred. Our estimated warming of mean surface temperature of 0.05°C per decade attributable to urbanization is much larger t…
Valuing ecosystem services: A shadow price for net primary production
Recent change of vegetation growth trend in China
Using satellite-derived normalized difference vegetation index (NDVI) data, several previous studies have indicated that vegetation growth significantly increased in most areas of China during the period 1982–99. In this letter, we extended the study period to 2010. We found that at the national scale the growing season (April–October) NDVI significantly increased by 0.0007 yr −1 from 1982 to 2010, but the increasing trend in NDVI over the last d…
Surface Urban Heat Island Across 419 Global Big Cities
Urban heat island is among the most evident aspects of human impacts on the earth system. Here we assess the diurnal and seasonal variation of surface urban heat island intensity (SUHII) defined as the surface temperature difference between urban area and suburban area measured from the MODIS. Differences in SUHII are analyzed across 419 global big cities, and we assess several potential biophysical and socio-economic driving factors. Across the …
Interpretation of variations in Modis-measured greenness levels of Amazon forests during 2000 to 2009
This work investigates variations in satellite-measured greenness of Amazon forests using ten years of NASA Moderate Resolution Imaging Spectroradiometer (MODIS) enhanced vegetation index (EVI) data. Corruption of optical remote sensing data with clouds and aerosols is prevalent in this region; filtering corrupted data causes spatial sampling constraints, as well as reducing the record length, which introduces large biases in estimates of greenne…
Global evapotranspiration over the past three decades: Estimation based on the water balance equation combined with empirical models
Author: Zeng, Zhenzhong et al.; Genre: Journal Article; Finally published : 2012; Title: Global evapotranspiration over the past three decades: estimation based on the water balance equation combined with empirical models
Spatio-temporal patterns of the area experiencing negative vegetation growth anomalies in China over the last three decades
Contribution of semi-arid ecosystems to interannual variability of the global carbon cycle
Satellite observation of tropical forest seasonality: Spatial patterns of carbon exchange in Amazonia
Determining the seasonality of terrestrial carbon exchange with the atmosphere remains a challenge in tropical forests because of the heterogeneity of ecosystem and climate. The magnitude and spatial variability of this flux are unknown, particularly in Amazonia where empirical upscaling approaches from spatially sparse in situ measurements and simulations from process-based models have been challenged in recent scientific literature. Here, we us…
Sunlight mediated seasonality in canopy structure and photosynthetic activity of Amazonian rainforests
Resolving the debate surrounding the nature and controls of seasonal variation in the structure and metabolism of Amazonian rainforests is critical to understanding their response to climate change. In situ studies have observed higher photosynthetic and evapotranspiration rates, increased litterfall and leaf flushing during the Sunlight-rich dry season. Satellite data also indicated higher greenness level, a proven surrogate of photosynthetic ca…
Changes in growing season duration and productivity of northern vegetation inferred from long-term remote sensing data
Monitoring and understanding climate-induced changes in the boreal and arctic vegetation is critical \nto aid in prognosticating their future.Weused a 33 year (1982–2014) long record of satellite \nobservations to robustly assess changes in metrics of growing season (onset: SOS, end: EOS and length: \nLOS) and seasonal total gross primary productivity. Particular attention was paid to evaluating the \naccuracy of these metrics by comparing them t…
Was the extreme Northern Hemisphere greening in 2015 predictable
The year 2015 was, at the time, the warmest since 1880, and many regions in the Northern Hemisphere (NH) registered record breaking annual temperatures. Simultaneously, a remarkable and widespread growing season greening was observed over most of the NH in the record from the Moderate Resolution Imaging Spectroradiometer (MODIS) normalized difference vegetation index (NDVI). While the response of vegetation to climate change (i.e. the long term t…
Increased vegetation growth and carbon stock in China karst via ecological engineering
Characteristics, drivers and feedbacks of global greening
China and India lead in greening of the world through land-use management
The direct and indirect effects of the environmental factors on global terrestrial gross primary productivity over the past four decades
Gross primary productivity (GPP) is jointly controlled by the structural and physiological properties of the vegetation canopy and the changing environment. Recent studies showed notable changes in global GPP during recent decades and attributed it to dramatic environmental changes. Environmental changes can affect GPP by altering not only the biogeochemical characteristics of the photosynthesis system (direct effects) but also the structure of t…
Climate-driven land surface phenology advance is overestimated due to ignoring land cover changes
Global warming has led to earlier spring green-up dates (GUDs) in recent decades with significant consequences for global carbon and hydrologic cycles. In addition to changes in climate, land cover change (LCC), including interchanges between vegetation and non-vegetation, and among plants with different functional traits, may also affect GUD. Here, we analyzed how satellite-derived GUD from 1992 to 2020 was impacted by changes in temperature, pr…
Precipitation leads the long-term vegetation increase in the conterminous United States drylands
Drylands, encompassing over 40% of the conterminous United States (CONUS), are crucial to the global carbon cycle and highly susceptible to climate change. However, Earth system models offer conflicting projections of future drought and vegetation activity in North America, and in-depth analyses of the long-term changes in greenness and its relationship with underlying climate drivers, considering both spatial and temporal variations at the ecosy…
Environmental Science (20 works) · Geography (19 works) · Climatology (15 works) · Climate change (14 works) · Ecology (12 works) · Physical geography (12 works) · Plant Water Relations and Carbon Dynamics (12 works) · Remote Sensing in Agriculture (11 works) · Vegetation (pathology (11 works) · Atmospheric sciences (10 works)