1 to 10 of 13 Results
Feb 13, 2020
Madeleine Pascolini-Campbell, 2020, "GRACE-based mass conservation as a validation target for basin-scale evapotranspiration in the contiguous United States", https://doi.org/10.48577/jpl.7R3NHK, Water Resources Research, JPL Open Repository
Here, we evaluate basin-scale evapotranspiration (ET) estimates for eleven major river basins in the contiguous United States against a water balance approach with Gravity Recovery and Climate Experiment (GRACE) satellite observations. The relatively precise measurements of large... |
Mar 17, 2020
Fisher, Joshua B, 2020, "Applying tipping point theory to remote sensing science to improve early warning drought signals for food security", https://doi.org/10.48577/jpl.D9JXMC, Earth's Future, JPL Open Repository
Famines have long been associated with drought. With the severity of droughts growing in association with climate change, there is increasing pressure to do a better job predicting famines and delivering international aid to avert human suffering and civil instability. We examine... |
Apr 1, 2020
Fisher, Joshua B, 2020, "ECOSTRESS: NASA’s next generation mission to measure evapotranspiration from the International Space Station", https://doi.org/10.48577/jpl.CYXICV, Water Resources Research, JPL Open Repository
The ECOsystem Spaceborne Thermal Radiometer Experiment on Space Station (ECOSTRESS) was launched to the International Space Station on June 29, 2018. The primary science focus of ECOSTRESS is centered on evapotranspiration (ET), which is produced as level-3 (L3) latent heat flux... |
Apr 1, 2020
Fisher, Joshua B, 2020, "Competing effects of soil fertility and toxicity on tropical greening", https://doi.org/10.48577/jpl.WKCJ25, Scientific Reports, JPL Open Repository
Tropical forests are expected to green up with increasing atmospheric CO2 concentrations, but primary productivity may be limited by soil nutrient availability. However, rarely have canopy-scale measurements been assessed against soil measurements in the tropics. Here, we sought... |
Apr 15, 2020
Fisher, Joshua B, 2020, "Global Trends in Evapotranspiration Dominated by Increases Across Large Cropland Regions", https://doi.org/10.48577/jpl.XMHRGC, Remote Sensing, JPL Open Repository
Irrigated croplands require large annual water inputs and are critical to global food production. Actual evapotranspiration (AET) is a main index of water use in croplands, and several remote-sensing products have been developed to quantify AET at the global scale. In this study,... |
May 15, 2020
Fisher, Joshua B, 2020, "Modeling suggests fossil fuel emissions have been driving increased land carbon uptake since the turn of the 20th Century", https://doi.org/10.48577/jpl.NYUE36, Scientific Reports, JPL Open Repository
Terrestrial vegetation removes CO2 from the atmosphere; an important climate regulation service that slows global warming1. This 119 Pg C per annum transfer of CO2 into plants2—gross primary productivity (GPP)—is the largest land carbon flux globally. While understanding past and... |
Aug 19, 2020
Fisher, Joshua B, 2020, "Integrating the evidence for a terrestrial carbon sink caused by increasing atmospheric CO2", https://doi.org/10.48577/jpl.YX52GI, New Phytologist, JPL Open Repository
Photosynthesis uses the energy in sunlight to bind CO2 to a five-carbon sugar, transferring CO2 from the atmosphere to plants (Calvin & Benson, 1948; Farquhar et al., 1980). Sugars produced by photosynthesis provide the building blocks and the primary fuel for much of life on Ear... |
Sep 28, 2020
Christine Lee, 2020, "Mapping Vegetation Health Around the World", https://doi.org/10.48577/jpl.VNQL6J, Eos, Transactions of the American Geophyscial Union, JPL Open Repository
One of the largest sources of uncertainty in projections of Earth’s future climate and of theMapping Vegetation Health Around the World - Eos https://eos.org/science-updates/mapping-vegetation-health-around-...1 of 9 9/28/20, 9:15 AMeffects of climate change is the cycle of feedb... |
Oct 26, 2020
Fisher, Joshua B, 2020, "Beyond Ecosystem Modeling: A Roadmap to Community Cyberinfrastructure for Ecological Data-Model Integration", https://doi.org/10.48577/jpl.HUJACV, Global Change Biology, JPL Open Repository
In an era of rapid global change, our ability to understand and predict Earth's natural systems is lagging behind our ability to monitor and measure changes in the biosphere. Bottlenecks to informing models with observations have reduced our capacity to fully exploit the growing... |
Dec 7, 2020
Fisher, Joshua B, 2020, "Integrating Field Observations and Reactive Transport Modeling to Predict Watershed Water Quality under Environmental Perturbations", https://doi.org/10.48577/jpl.AW9SDR, Journal of Hydrology, JPL Open Repository
Watersheds play a critical role in supplying water resources needed for humanuse and ecosystem health. Understanding and predicting how, when,and where changes in the quantity and quality of water resources occur underdierent environmental stresses including extreme events is cr... |
