Results 91 to 100 of about 3,413,392 (339)

Estimating CH4, CO2 and CO emissions from coal mining and industrial activities in the Upper Silesian Coal Basin using an aircraft-based mass balance approach

open access: yes, 2020
. A severe reduction of greenhouse gas emissions is necessary to reach the objectives of the Paris Agreement. The implementation and continuous evaluation of mitigation measures requires regular independent information on emissions of the two main ...
A. Fiehn   +19 more
semanticscholar   +1 more source

Indexing, screening, coding and cataloging of earth resources aircraft mission data [PDF]

open access: yes
Tasks completed are as follows: (1) preparation of large Area Crop Inventory experiment for data base entry;(2) preparation of Earth Observations Aircraft Flight summary reports for publication; (3) updating of the aircraft mission index coverage map and

core   +1 more source

Validation of northern latitude Tropospheric Emission Spectrometer stare ozone profiles with ARC-IONS sondes during ARCTAS: sensitivity, bias and error analysis [PDF]

open access: yes, 2010
We compare Tropospheric Emission Spectrometer (TES) versions 3 and 4, V003 and V004, respectively, nadir-stare ozone profiles with ozonesonde profiles from the Arctic Intensive Ozonesonde Network Study (ARCIONS, http://croc.gsfc.nasa.gov/arcions/ during ...
Bowman, K. W.   +13 more
core   +2 more sources

Smart Bioinspired Material‐Based Actuators: Current Challenges and Prospects

open access: yesAdvanced Intelligent Systems, Volume 7, Issue 3, March 2025.
This work gathers, in a review style, an extensive and comprehensive literature overview on the development of autonomous actuators based on synthetic materials, bringing together valuable knowledge from several studies. Furthermore, the article identifies the fundamental principles of actuation mechanisms and defines key parameters to address the size
Alejandro Palacios   +4 more
wiley   +1 more source

Aircraft Observations of Aerosol Properties and Their Impact on Cloud Droplets in Gansu Province

open access: yes应用气象学报
Aerosol-cloud interaction has significant influences on radiation balance, water cycle and energy cycle of earth-air system. Sources of aerosols in Gansu Province are complex, involving both natural and anthropogenic activities. Based on typical aircraft
Wang Yanfeng   +6 more
doaj   +1 more source

Emission Fourier transform spectroscopy for remote sensingof the Earth's atmosphere

open access: yesAnnals of Geophysics, 2003
Fourier transform emission spectroscopy can make an important contribution in the observation of the Earth's atmosphere and in the investigation of atmospheric physics and chemistry.
B. Carli, U. Cortesi, G. Bianchini
doaj   +1 more source

Estimates of Mode-S EHS aircraft-derived wind observation errors using triple collocation

open access: yes, 2015
. Information on the accuracy of meteorological observation is essential to assess the applicability of the measurements. In general, accuracy information is difficult to obtain in operational situations, since the truth is unknown.
S. Haan
semanticscholar   +1 more source

Comparison of NOAA-9 ERBE measurements with Cirrus IFO satellite and aircraft measurements [PDF]

open access: yes
Earth Radiation Budget Experiment (ERBE) measurements onboard the NOAA-9 are compared for consistency with satellite and aircraft measurements made during the Cirrus Intensive Field Observation (IFO) of October 1986. ERBE scene identification is compared
Ackerman, Steven A.   +5 more
core   +1 more source

Improving Aircraft Engines Prognostics and Health Management via Anticipated Model-Based Validation of Health Indicators [PDF]

open access: yes, 2014
The aircraft engines manufacturing industry is subjected to many dependability constraints from certification authorities and economic background. In particular, the costs induced by unscheduled maintenance and delays and cancellations impose to ensure a
LAMOUREUX, Benjamin   +2 more
core   +6 more sources

Robust Reinforcement Learning Control Framework for a Quadrotor Unmanned Aerial Vehicle Using Critic Neural Network

open access: yesAdvanced Intelligent Systems, Volume 7, Issue 3, March 2025.
Quadrotor unmanned aerial vehicle control is critical to maintain flight safety and efficiency, especially when facing external disturbances and model uncertainties. This article presents a robust reinforcement learning control scheme to deal with these challenges.
Yu Cai   +3 more
wiley   +1 more source

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