Results 71 to 80 of about 12,090 (214)

A novel spaceborne lidar calibration technique: the multi-calibration lidar experiment [PDF]

International Conference on Space Optics — ICSO 2006, 2017
Although the noticeable progress achieved by ground-based lidars, using lidars as an operational spaceborne i nstruments still poses issu es to be solved. A key issue is the long-term stability of the instrument over the mission lifetime, as a whole as well as at the level of each subsystem; another important issue is related to the processes of ...
openaire   +1 more source

Weak Influence of Surface Pressure on Arctic Radiative States From Winter to Spring Over the Sea‐Ice

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract The Arctic sea‐ice surface energy budget is characterized by two radiative states driven by the presence or absence of opaque clouds that warm the surface. Ground‐based observations from the 1998 SHEBA campaign collected over sea‐ice suggested that the two radiative states correspond to distinct surface pressure values.
Jean Lac, Hélène Chepfer, Matthew D. Shupe   +2 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  

Near real-time flood detection in urban and rural areas using high resolution Synthetic Aperture Radar images [PDF]

, 2012
A near real-time flood detection algorithm giving a synoptic overview of the extent of flooding in both urban and rural areas, and capable of working during night-time and day-time even if cloud was present, could be a useful tool for operational flood ...
Bates, Paul, Davenport, Ian, Mason, David, Neal, Jeffrey, Schumann, Guy   +4 more
core   +1 more source

Ocean subsurface studies with the CALIPSO spaceborne lidar [PDF]

Journal of Geophysical Research: Oceans, 2014
AbstractThe primary objective of the Cloud‐Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) mission is to study the climate impact of clouds and aerosols in the atmosphere. However, recent studies have demonstrated that CALIPSO also collects information about the ocean subsurface.
Xiaomei Lu, Yongxiang Hu, Charles Trepte, Shan Zeng, James H. Churnside   +4 more
openaire   +1 more source

The Life Cycle of a Stratospheric Smoke Plume as Seen From EarthCARE—Tracking a Plume From Canada to Europe

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract At the end of May 2025, extremely strong wildfires in Canada produced several pyrocumulonimbus clouds lifting the smoke particles up to the lower stratosphere. Stratospheric aerosol optical depths of more than 2.5 were observed by the ATmospheric LiDAR (ATLID) onboard of the Earth Cloud, Aerosol and Radiation Explorer (EarthCARE) satellite ...
Moritz Haarig, Holger Baars, Leonard König, David P. Donovan, Albert Ansmann, Sergey Khaykin, Romain Ceolato, Benedikt Gast, Crisofer Jimenez, Athena A. Floutsi, Robin J. Hogan, Annabel Chantry, Fabien Marnas, Johanna Roschke, Gerd‐Jan van Zadelhoff, Ulla Wandinger   +15 more
wiley   +1 more source

Lidar measurements from space for tropospheric chemistry investigations: Summary of workshop overview presentation [PDF]

Over the past decade, NASA has played a lead role in defining the scientific objectives and technology requirements for spaceborne lidar investigations of the atmosphere.
Browell, Edward V.
core   +1 more source

First results of a GNSS-R experiment from a stratospheric balloon over boreal forests [PDF]

, 2015
The empirical results of a global navigation satellite systems reflectometry (GNSS-R) experiment onboard the Balloon EXperiments for University Students (BEXUS) 17 stratospheric balloon performed north of Sweden over boreal forests show that the power of
Camps Carmona, Adriano José, Carreño Luengo, Hugo, Forte Veliz, Giuseppe Francesco, Querol Borràs, Jorge   +3 more
core   +2 more sources

Height‐Dependent Sensitivity of Cloud Scales to Surface Temperature Anomaly Observed by Active Satellites

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract As a key macrophysical property, cloud horizontal scale plays a critical role in cloud radiative effect (CRE), precipitation and convective structures. Until now, however, how cloud scales vary with surface temperature anomaly and their subsequent impacts on CRE and precipitation remains unclear.
Lijie Zhang, Jiming Li, Zhenyu Cao, Sihang Xu, Qiudi Xu, Bida Jian, Yang Wang, Yuan Wang   +7 more
wiley   +1 more source

High‐Resolution Digital Terrain Model and Land‐Surface Parameters of São Sebastião and Ilhabela, Southeastern Brazil

Geoscience Data Journal, Volume 13, Issue 2, April 2026.
The first openly accessible 2 m‐resolution lidar‐based DTM and an extensive set of land‐surface parameters (LSPs) for the region of São Sebastião and Ilhabela, southeastern Brazil, reveal geomorphological features previously indiscernible, including past landslide deposits, drainage captures and structural lineaments.
Rebeca Durço Coelho, Gabriella Labate Frugis, Camila Duelis Viana, Carlos Henrique Grohmann   +3 more
wiley   +1 more source