Results 31 to 40 of about 145,192 (165)

Long-Term Evolution of the Ozone Layer Under CMIP7 Scenarios

open access: yesAtmosphere
Recovery of the stratospheric ozone layer following the ban on ozone-depleting substances represents one of the most successful examples of international environmental policy.
Margarita A. Tkachenko   +1 more
doaj   +1 more source

GIS based landslide susceptibility mapping of northern areas of Pakistan, a case study of Shigar and Shyok Basins

open access: yesGeomatics, Natural Hazards & Risk, 2017
This study presents the use of geographical information system (GIS) datasets and methods to investigate landslide susceptibility in the rugged mountainous terrain of Shigar and Shyok Basins in northern areas of Pakistan.
Shamsa Kanwal   +2 more
doaj   +1 more source

Efficient metal emissions in the upper atmospheres of close-in exoplanets

open access: yesEarth and Planetary Physics, 2018
Atmospheric escape is a key process controlling the long term evolution of planets. Radiative cooling competes for energy against atmospheric escape in planetary upper atmospheres.
Lei Liu, Feng Tian
doaj   +1 more source

Spectra of Acoustic-Gravity Waves in the Atmosphere with a Quasi-Isothermal Upper Layer

open access: yesAtmosphere, 2021
In this paper, we study, in theoretical terms, the structure of the spectrum of acoustic-gravity waves (AGWs) in the nonisothermal atmosphere having asymptotically constant temperature at high altitudes.
Sergey P. Kshevetskii   +2 more
doaj   +1 more source

Simulation Calculation of Element Number Density in the Earth’s Atmosphere Based on X-ray Occultation Sounding

open access: yesRemote Sensing, 2022
The number density profiles of elements N and O in the altitude range of 120–250 km are retrieved by simulation based on X-ray occultation. Based on the parameters of the NICER telescope, the energy spectrum forward model of the Crab Nebula in the energy
Daochun Yu, Baoquan Li
doaj   +1 more source

RESULTS OF THE STUDY OF HIGHLY EXCITED ATOMS OF THE UPPER ATMOSPHERE [PDF]

open access: yesVestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2013
The results of Ionosonde data over Kamchatka during the emergence of D-layer at night are discussed. At the same time, the spectra of the night sky are represented at this period using a spectrum analyzer installed on Lidar Station of IKIR FEB RAS.
Y.A. Nepomnyashchiy   +2 more
doaj   +1 more source

Identification of spectrum of secondary acoustic-gravity waves in the middle and upper atmosphere in a high-resolution numerical model

open access: yesSolar-Terrestrial Physics, 2023
Considerable attention has recently been paid to the study of so-called “secondary” acoustic-gravity waves (AGWs) that arise as a result of instability and nonlinear interactions of “primary” wave modes propagating from atmospheric sources, among ...
Gavrilov N. M., Kshevetskii S. P.
doaj   +1 more source

Temperature and Ozone Response to Different Forcing in the Lower Troposphere and Stratosphere

open access: yesAtmosphere
To evaluate the contributions of different forcings to the temperature and atmospheric composition changes between 1980 and 2020, we exploited the chemistry-climate model (CCM) SOCOLv3.
Margarita Usacheva   +3 more
doaj   +1 more source

Response of atmospheric carbon dioxide to the secular variation of weakening geomagnetic field in whole atmosphere simulations

open access: yesEarth and Planetary Physics, 2021
Responses of atmospheric carbon dioxide (CO2) density to geomagnetic secular variation are investigated using the Whole Atmosphere Community Climate Model-eXtended (WACCM-X).
Xu Zhou   +4 more
doaj   +1 more source

Analysis Synoptic Patterns for Forest Fires Risk in Northern of Iran [PDF]

open access: yesمخاطرات محیط طبیعی, 2018
Iran is one of the countries in the Middle East and North of Africa that face high risk in terms of wildfire occurrence in forested areas. We had used the record data SLP, 850 and 500hpa, temperature, precipitation, relativity humidity, speed and ...
Dariush Rahimi, Samaneh Khademi
doaj   +1 more source

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