Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Ivan N. Kolev"'
Autor:
Vera Grigorieva, Nikolay Kolev, Evgeni Donev, Tsvetina Evgenieva, Danko Ivanov, Ivan N. Kolev, Vladislav Danchovski, Bogdana Mendeva
Publikováno v:
International Journal of Remote Sensing. 33:3542-3556
Atmospheric ozone behaviour over Sofia has been investigated with remote-sensing and in situ techniques. Surface ozone and boundary layer observations performed in recent years at three city sites have been analysed. It was found that, in the autumn
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f56100db4c21fc1ee4d0b2c198c65ef9
https://doi.org/10.1080/01431161.2011.621904
https://doi.org/10.1080/01431161.2011.621904
Autor:
Vera Grigorieva, Nikolay Kolev, Tsvetina Evgenieva, Plamen Savov, Evgeni Donev, Danko Ivanov, Ivan N. Kolev
Publikováno v:
International Journal of Remote Sensing. 32:8915-8933
The ecological problems caused by the increasing ozone concentration are not easily solved because ozone is not directly emitted by certain sources Its concentration depends on numerous dynamical and chemical processes. Stratosphere–troposphere exc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d12406aa3b8a72ff2930325cb9025c67
https://doi.org/10.1080/01431161.2010.524679
https://doi.org/10.1080/01431161.2010.524679
Autor:
B. L. B. Wiman, Ts. I. Iliev, Boiko K. Kaprielov, Ts. T. Evgenieva, E Donev, Ventsislav Danchovski, Ivan N. Kolev, Plamen Savov, Nikolay Kolev, D. I. Ivanov, Vera Grigorieva
Publikováno v:
International Journal of Remote Sensing. 32:9343-9363
Based on a novel combination of approaches and instruments, this article presents campaign-based results from atmospheric boundary layer (ABL) height and aerosol optical depth (AOD) measurements ca ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e0dd7cddac0b410a75dcfc048313d209
https://doi.org/10.1080/01431161.2011.554456
https://doi.org/10.1080/01431161.2011.554456
Autor:
Nikolay Kolev, Boiko K. Kaprielov, Ts. T. Evgenieva, Pl. B. Savov, Pcs Devara, I. Ts. Iliev, Ivan N. Kolev
Publikováno v:
International Journal of Remote Sensing. 30:6381-6401
A series of campaigns involving a systematic investigation of the atmosphere over an urban area of Sofia city were carried out. A European Aerosol Research Lidar Network (EARLINET) scanning aerosol lidar, a spectroradiometer, a standard sun photomete
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0833f13f1d82ec4beed2d02c84d6a195
https://doi.org/10.1080/01431160902865764
https://doi.org/10.1080/01431160902865764
Autor:
Boiko K. Kaprielov, Vera Grigorieva, Ivan N. Kolev, E Donev, Nikolay Kolev, P. Simeonov, V. Umlensky, Boyan Tatarov
Publikováno v:
International Journal of Remote Sensing. 26:3567-3584
A complex investigation of the planetary boundary layer (PBL) is presented. Observations were carried out on 11 August 1999 during the solar eclipse over Bulgaria using a Light Detection and Ranging Device (Lidar), ozone meters and ground meteorologi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd63993dfa29cb4aa0c0323a901bccf0
https://doi.org/10.1080/01431160500076939
https://doi.org/10.1080/01431160500076939
Autor:
Ivan N. Kolev, Boyan Tatarov
Publikováno v:
Applied Physics B. 73:261-268
We present results of experimental investigations of the signal-polarization characteristics in the case of lidar sounding during precipitation. We show and discuss the lidar signals and the depolarization profiles along the sounding path for liquid-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a18e402655f323e974b5f94344b55a6c
https://doi.org/10.1007/s003400100644
https://doi.org/10.1007/s003400100644
Publikováno v:
Applied Physics B: Lasers and Optics. 71:593-600
We report an experimental study of the lidar signal depolarization as a function of the relative contribution of the multiple scattering in case of optically dense objects in the atmospheric planetary boundary layer. Results of the observation of fog
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::459af9caa15960b71977db2d82808127
https://doi.org/10.1007/s003400000265
https://doi.org/10.1007/s003400000265
Publikováno v:
Atmospheric Environment. 34:3813-3822
The paper presents a lidar study of the volume extinction coefficient in the atmosphere at the Bulgarian Black Sea coast in the presence of a breeze circulation. An attempt is made to evaluate the influence of the meteorological parameters on the opt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::45363ac78e2e45e6845a5f642362f49b
https://doi.org/10.1016/s1352-2310(00)00095-9
https://doi.org/10.1016/s1352-2310(00)00095-9
Publikováno v:
Atmospheric Environment. 34:3223-3235
A study of the formation of stable stratification after sunset is presented. The dynamics of atmospheric parameters (e.g., the wind velocity and temperature profiles, height of various layers, etc.) associated with the interaction processes of mounta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4094cf5f06f6b1e4bd7d250ddbee112c
https://doi.org/10.1016/s1352-2310(99)00490-2
https://doi.org/10.1016/s1352-2310(99)00490-2
Publikováno v:
Journal of Applied Meteorology. 37:982-995
This paper describes results of a lidar study of sea-breeze behavior near Akhtopol in the southeastern corner of Bulgaria. The lidar site was a few hundred meters from the western shore of the Black Sea. Analyses are presented of vertical cross secti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e3685f9fff6495eb9edeafe4636b7cde
https://doi.org/10.1175/1520-0450(1998)037<0982:loosba>2.0.co
https://doi.org/10.1175/1520-0450(1998)037<0982:loosba>2.0.co