Results 61 to 70 of about 1,224 (173)

Environmental Filtering Dominates Over Dispersal Limitation in Structuring Highly Mobile Tropical Communities

Journal of Biogeography, Volume 53, Issue 6, June 2026.
ABSTRACT Aim To disentangle the relative roles of environmental filtering (niche processes) and dispersal limitation (neutral processes) in structuring communities of a highly mobile tropical taxon, and to assess the implications for biodiversity patterns at broad spatial scales. Location Brazilian Amazon. Time Period 2011–2019.
Rafael M. Rabelo, Cristian Dambros, Márlon B. C. S. Graça, Geanne C. N. Pereira, Isabela F. Oliveira, Tarik Godoy Dangl Plaza, William E. Magnusson   +6 more
wiley   +1 more source

Airborne lidar reflectance measurements at 1.57 μm in support of the A-SCOPE mission for atmospheric CO₂ [PDF]

Atmospheric Measurement Techniques, 2009
The characteristics of the lidar reflectance of the Earth's surface is an important issue for the IPDA lidar technique (integrated path differential absorption lidar) which is the proposed method for the spaceborne measurement of atmospheric carbon ...
J. Caron, G. Ehret, A. Fix, A. Amediek, Y. Durand   +4 more
doaj  

Detecting Change in Forest Structure with Simulated GEDI Lidar Waveforms: A Case Study of the Hemlock Woolly Adelgid (HWA; Adelges tsugae) Infestation

Remote Sensing, 2020
The hemlock woolly adelgid (HWA; Adelges tsugae) is an invasive insect infestation that is spreading into the forests of the northeastern United States, driven by the warmer winter temperatures associated with climate change.
Peter Brehm Boucher, Steven Hancock, David A Orwig, Laura Duncanson, John Armston, Hao Tang, Keith Krause, Bruce Cook, Ian Paynter, Zhan Li, Arthur Elmes, Crystal Schaaf   +11 more
doaj   +1 more source

Representation of Stratocumulus and Shallow Cumulus Cloud Fraction Near the Southeast Pacific Ocean ITCZ in ERA5 and MERRA‐2 Reanalyses

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 10, 28 May 2026.
Abstract Model precipitation biases in the intertropical convergence zone (ITCZ) are often tied to the underestimation of stratocumulus (Sc) and shallow cumulus (Cu) clouds. We design a method to distinguish between Sc and Cu cloud regimes under subsidence on daily timescales based on cloud top pressure and vertical velocity to investigate the spatial ...
Fouzia Fahrin, Alex O. Gonzalez, Gregory V. Cesana, Charlotte A. DeMott, Richard B. Neale   +4 more
wiley   +1 more source

Measure Less, Map More: Using Machine Learning, Physiography, and Prior Depth Maps to Extrapolate In‐Swath Snow Depth Measurements Across Mountain Basins

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract Basin‐wide snow depth (SD) maps can support operational water supply assessments, but their availability is limited by measurement costs (airborne) or sampling constraints (satellite and drone). We present Swath‐random forest (RF), a methodology that trains random forests on SD measured within a narrow swath (<10% of a basin) to extrapolate ...
Eric E. Small, Mark S. Raleigh, Jordan N. Herbert   +2 more
wiley   +1 more source

Toward Closing the Hydroxyl Radical (OH) Budget: Assessing the Feasibility and Uncertainties in Constraining primary OH Production From Space

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 9, 16 May 2026.
Abstract Recent progress in constraining the atmosphere's primary oxidant, the hydroxyl radical (OH), with machine learning (ML) and satellite data raises the intriguing possibility of also constraining individual OH chemical production and loss terms.
Daniel C. Anderson, Bryan N. Duncan, Amir H. Souri, Junhua Liu, Sarah Strode, Doyeon Ahn   +5 more
wiley   +1 more source

Frontiers of Doppler Lidar: A Review on Its Global Applications

Meteorological Applications, Volume 33, Issue 3, May/June 2026.
Doppler lidars provide high‐resolution wind measurements that support weather forecasting, wind energy optimization, and aviation safety. This review highlights their global applications, operational advantages, and growing role in atmospheric science and sustainable development. ABSTRACT Doppler lidar is a powerful remote sensing technology capable of
Sridhara Nayak, Isao Kanda
wiley   +1 more source

Observation and Coordination Needs for Current, Near‐Future, and Next Generation Earth‐Observing SAR Systems

Earth and Space Science, Volume 13, Issue 5, May 2026.
Abstract This paper summarizes an evaluation by experts of how coordination of Earth‐observing Synthetic Aperture Radar (SAR) missions among the world's space agencies could advance toward game‐changing scientific discoveries and fully realizing SAR's practical capability to address many issues facing society.
Cathleen E. Jones, Ake Rosenqvist, Björn Rommen, Magdalena Fitrzyk, Eric Rignot, Bernd Scheuchl, Yujie Zheng, Andrew Hooper, Mark Simons, Tomokazu Kobayashi, Paul Siqueira, Maurizio Santoro, Takeo Tadono, Laura Hess, Heather McNairn, Laura Frulla, Malin Johansson, Wolfgang Dierking, Line Rouyet, Annett Bartsch, Paco Lopez Dekker, Johnny A. Johannessen   +21 more
wiley   +1 more source

Performance simulations for a spaceborne ozone lidar mission

Optics Express
The future range resolved spaceborne ozone differential absorption lidar (SODIAL) is expected to fill the current observation gap, especially in areas where in-situ observation and passive remote sensing are difficult. The spaceborne ozone lidar preparatory research mission (SOLPRM) proposed by the State Administration of Science, Technology, and ...
Xiang Jin, Guangqiang Fan, Tianshu Zhang, Bowen Zhang, Xi Mu, Yan Xiang, Jinxin Chen, Wenqing Liu   +7 more
openaire   +2 more sources

1579 NM Fiber Laser Source for Spaceborne Monitoring of Carbon Dioxide

EPJ Web of Conferences, 2016
We report on the development of a 1579 nm pulsed fiber laser source with high peak-power, intended to be used as a lidar source for CO2 monitoring from space.
Cézard Nicolas, Lombard Laurent, Le Gouët Julien, Goular Didier, Bresson Alexandre, Dolfi-Bouteyre Agnès, Canat Guillaume   +6 more
doaj   +1 more source