Search Results - "Joiner, Joanna"

Overview of Solar-Induced chlorophyll Fluorescence (SIF) from the Orbiting Carbon Observatory-2: Retrieval, cross-mission comparison, and global monitoring for GPP by Sun, Ying, Frankenberg, Christian, Jung, Martin, Joiner, Joanna, Guanter, Luis, Köhler, Philipp, Magney, Troy

“…The Orbiting Carbon Observatory-2 (OCO-2), launched in July 2014, is capable of measuring Solar-Induced chlorophyll Fluorescence (SIF), a functional proxy for…”
Get full text

A Global Spatially Contiguous Solar-Induced Fluorescence (CSIF) Dataset Using Neural Networks by Zhang, Yao, Joiner, Joanna, Alemohammad, Seyed Hamed, Zhou, Sha, Gentine, Pierre

“…Satellite-retrieved solar-induced chlorophyll fluorescence (SIF) has shown great potential to monitor the photosynthetic activity of terrestrial ecosystems…”
Get full text

Spatially-explicit monitoring of crop photosynthetic capacity through the use of space-based chlorophyll fluorescence data by Zhang, Yongguang, Guanter, Luis, Joiner, Joanna, Song, Lian, Guan, Kaiyu

“…Plant functional traits such as photosynthetic capacity are critical parameters for terrestrial biosphere models. However, their spatial and temporal…”
Get full text

Improving the monitoring of crop productivity using spaceborne solar‐induced fluorescence by Guan, Kaiyu, Berry, Joseph A., Zhang, Yongguang, Joiner, Joanna, Guanter, Luis, Badgley, Grayson, Lobell, David B.

“…Large‐scale monitoring of crop growth and yield has important value for forecasting food production and prices and ensuring regional food security. A newly…”
Get full text

India Is Overtaking China as the World’s Largest Emitter of Anthropogenic Sulfur Dioxide by Li, Can, McLinden, Chris, Fioletov, Vitali, Krotkov, Nickolay, Carn, Simon, Joiner, Joanna, Streets, David, He, Hao, Ren, Xinrong, Li, Zhanqing, Dickerson, Russell R.

“…Severe haze is a major public health concern in China and India. Both countries rely heavily on coal for energy, and sulfur dioxide (SO 2 ) emitted from…”
Get full text

A fast and sensitive new satellite SO2 retrieval algorithm based on principal component analysis: Application to the ozone monitoring instrument by Li, Can, Joiner, Joanna, Krotkov, Nickolay A., Bhartia, Pawan K.

“…We describe a new algorithm to retrieve SO2 from satellite‐measured hyperspectral radiances. We employ the principal component analysis technique in regions…”
Get full text

Application of satellite solar-induced chlorophyll fluorescence to understanding large-scale variations in vegetation phenology and function over northern high latitude forests by Jeong, Su-Jong, Schimel, David, Frankenberg, Christian, Drewry, Darren T., Fisher, Joshua B., Verma, Manish, Berry, Joseph A., Lee, Jung-Eun, Joiner, Joanna

“…This study evaluates the large-scale seasonal phenology and physiology of vegetation over northern high latitude forests (40°–55°N) during spring and fall by…”
Get full text

Reduction of structural impacts and distinction of photosynthetic pathways in a global estimation of GPP from space-borne solar-induced chlorophyll fluorescence by Zhang, Zhaoying, Zhang, Yongguang, Porcar-Castell, Albert, Joiner, Joanna, Guanter, Luis, Yang, Xi, Migliavacca, Mirco, Ju, Weimin, Sun, Zhigang, Chen, Shiping, Martini, David, Zhang, Qian, Li, Zhaohui, Cleverly, James, Wang, Hezhou, Goulas, Yves

“…Quantifying global photosynthesis remains a challenge due to a lack of accurate remote sensing proxies. Solar-induced chlorophyll fluorescence (SIF) has been…”
Get full text

Consistency between sun-induced chlorophyll fluorescence and gross primary production of vegetation in North America by Zhang, Yao, Xiao, Xiangming, Jin, Cui, Dong, Jinwei, Zhou, Sha, Wagle, Pradeep, Joiner, Joanna, Guanter, Luis, Zhang, Yongguang, Zhang, Geli, Qin, Yuanwei, Wang, Jie, Moore, Berrien

“…Accurate estimation of the gross primary production (GPP) of terrestrial ecosystems is vital for a better understanding of the spatial-temporal patterns of the…”
Get full text

Estimation of vegetation photosynthetic capacity from space‐based measurements of chlorophyll fluorescence for terrestrial biosphere models by Zhang, Yongguang, Guanter, Luis, Berry, Joseph A, Joiner, Joanna, Tol, Christiaan, Huete, Alfredo, Gitelson, Anatoly, Voigt, Maximilian, Köhler, Philipp

“…Photosynthesis simulations by terrestrial biosphere models are usually based on the Farquhar's model, in which the maximum rate of carboxylation (Vcₘₐₓ) is a…”
Get full text

Global and time-resolved monitoring of crop photosynthesis with chlorophyll fluorescence by Guanter, Luis, Zhang, Yongguang, Jung, Martin, Joiner, Joanna, Voigt, Maximilian, Berry, Joseph A, Frankenberg, Christian, Huete, Alfredo R, Zarco-Tejada, Pablo, Lee, Jung-Eun, Moran, M Susan, Ponce-Campos, Guillermo, Beer, Christian, Camps-Valls, Gustavo, Buchmann, Nina, Gianelle, Damiano, Klumpp, Katja, Cescatti, Alessandro, Baker, John M, Griffis, Timothy J

“…Photosynthesis is the process by which plants harvest sunlight to produce sugars from carbon dioxide and water. It is the primary source of energy for all life…”
Get full text

Photosynthetic seasonality of global tropical forests constrained by hydroclimate by Guan, Kaiyu, Pan, Ming, Li, Haibin, Wolf, Adam, Wu, Jin, Medvigy, David, Caylor, Kelly K., Sheffield, Justin, Wood, Eric F., Malhi, Yadvinder, Liang, Miaoling, Kimball, John S., Saleska, Scott R., Berry, Joe, Joiner, Joanna, Lyapustin, Alexei I.

“…Droughts can cause dry-season productivity to decline in tropical forests. This decline occurs when precipitation is below 2,000 mm yr −1 , resulting in…”
Get full text

Space-based detection of missing sulfur dioxide sources of global air pollution by McLinden, Chris A., Fioletov, Vitali, Shephard, Mark W., Krotkov, Nick, Li, Can, Martin, Randall V., Moran, Michael D., Joiner, Joanna

“…Sulfur dioxide is a key air contaminant. A satellite-based emissions inventory reveals a number of hitherto unknown sources, with a cluster around the Persian…”
Get full text

Estimation of Terrestrial Global Gross Primary Production (GPP) with Satellite Data-Driven Models and Eddy Covariance Flux Data by Joiner, Joanna, Yoshida, Yasuko, Zhang, Yao, Duveiller, Gregory, Jung, Martin, Lyapustin, Alexei I., Wang, Yujie, Tucker, Compton J.

“…We estimate global terrestrial gross primary production (GPP) based on models that use satellite data within a simplified light-use efficiency framework that…”
Get full text

Abrupt decline in tropospheric nitrogen dioxide over China after the outbreak of COVID-19 by Liu, Fei, Page, Aaron, Strode, Sarah A., Yoshida, Yasuko, Choi, Sungyeon, Zheng, Bo, Lamsal, Lok N., Li, Can, Krotkov, Nickolay A., Eskes, Henk, van der A, Ronald, Veefkind, Pepijn, Levelt, Pieternel F., Hauser, Oliver P., Joiner, Joanna

“…Chinese COVID-19 policies indirectly lead to reduced fuel use and reduction in environmental emissions. China’s policy interventions to reduce the spread of…”
Get full text

Using field spectroscopy to assess the potential of statistical approaches for the retrieval of sun-induced chlorophyll fluorescence from ground and space by Guanter, Luis, Rossini, Micol, Colombo, Roberto, Meroni, Michele, Frankenberg, Christian, Lee, Jung-Eun, Joiner, Joanna

“…Sun-induced chlorophyll fluorescence (Fs) is an electromagnetic signal emitted in the 650–800nm spectral window by the chlorophyll-a of green leaves. Previous…”
Get full text

The impact of alternative trait-scaling hypotheses for the maximum photosynthetic carboxylation rate (V cmax) on global gross primary production by Walker, Anthony P., Quaife, Tristan, Van Bodegom, Peter M., De Kauwe, Martin G., Keenan, Trevor F., Joiner, Joanna, Lomas, Mark R., MacBean, Natasha, Xu, Chongang, Yang, Xiaojuan, Woodward, F. Ian

“…The maximum photosynthetic carboxylation rate (V cmax) is an influential plant trait that has multiple scaling hypotheses, which is a source of uncertainty in…”
Get full text

Drought onset mechanisms revealed by satellite solar-induced chlorophyll fluorescence: Insights from two contrasting extreme events by Sun, Ying, Fu, Rong, Dickinson, Robert, Joiner, Joanna, Frankenberg, Christian, Gu, Lianhong, Xia, Youlong, Fernando, Nelun

“…This study uses the droughts of 2011 in Texas and 2012 over the central Great Plains as case studies to explore the potential of satellite‐observed…”
Get full text

Estimates of Hyperspectral Surface and Underwater UV Planar and Scalar Irradiances from OMI Measurements and Radiative Transfer Computations by Vasilkov, Alexander, Krotkov, Nickolay, Haffner, David, Fasnacht, Zachary, Joiner, Joanna

“…Quantitative assessment of the UV effects on aquatic ecosystems requires an estimate of the in-water hyperspectral radiation field. Solar UV radiation in ocean…”
Get full text

A new method for global retrievals of HCHO total columns from the Suomi National Polar-orbiting Partnership Ozone Mapping and Profiler Suite by Li, Can, Joiner, Joanna, Krotkov, Nickolay A., Dunlap, Laura

“…We introduce a new method for retrieving formaldehyde (HCHO) based on principal component analysis (PCA) of satellite‐measured radiances. Applying the…”
Get full text