Zobrazeno 1 - 10
of 37
pro vyhledávání: '"D. V. Phanikumar"'
Publikováno v:
Annales Geophysicae, Vol 34, Pp 123-132 (2016)
This study examines the link between upper-tropospheric planetary-scale Rossby waves and surface meteorological parameters based on the observations made in association with the Ganges Valley Aerosol Experiment (GVAX) campaign at an extratropical
Externí odkaz:
https://doaj.org/article/82e39d0a537b4b578d2461e3a18efeb1
Autor:
D. V. Phanikumar, K. Niranjan Kumar, K. K. Shukla, H. Joshi, M. Venkat Ratnam, M. Naja, K. Reddy
Publikováno v:
Annales Geophysicae, Vol 32, Pp 175-180 (2014)
Long-period modulations are shown in aerosol optical depth measured by the Microtops II Sun photometer over a high-altitude site the central Himalayan region (Nainital, 29.4° N, 79.5° E, 1958 m a.m.s.l.) for the first time. Fourier analysis of a
Externí odkaz:
https://doaj.org/article/98d4fc4932534512a166ef2e12c69c3b
Autor:
A. K. Patra, D. V. Phanikumar
Publikováno v:
Annales Geophysicae, Vol 27, Pp 3781-3790 (2009)
Intriguing new results of F-region irregularities observed using the Gadanki MST radar during the SAFAR campaigns, which were conducted during the equinox and summer of 2008 that corresponds to low solar activity condition, are presented. The summ
Externí odkaz:
https://doaj.org/article/9e99a6d2e0324e0990fe74da8d327191
Publikováno v:
Annales Geophysicae, Vol 26, Pp 1865-1876 (2008)
In this paper, we present seasonal variation of E region field-aligned irregularities (FAIs) observed using the Gadanki radar and compare them with the seasonal variation of Es observed from a nearby location SHAR. During daytime, FAIs occur maxim
Externí odkaz:
https://doaj.org/article/83c00686f2cc41e8bf5c9736d8f5970c
Effect of total lunar eclipse of 27th July 2018 on the D-region ionosphere by using VLF observations
Publikováno v:
Advances in Space Research. 69:121-131
In this report, an effort for the first time has been made to investigate the effect of the total Lunar Eclipse that occurred on 27th July 2018 (the longest lunar eclipse in the 21st century) on the D-region ionosphere. Very Low Frequency (VLF) navig
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2feab61b856f750355c58270e537e172
https://doi.org/10.1016/j.asr.2021.09.013
https://doi.org/10.1016/j.asr.2021.09.013
Autor:
Rajesh Singh, Kondapalli Niranjan Kumar, Karanam Kishore Kumar, D. V. Phanikumar, Ajeet K. Maurya, P.K. Vineeth, Morris B. Cohen
Publikováno v:
Journal of Geophysical Research: Space Physics. 124:9448-9461
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42597cc536f50ae5532e9e291c098f5d
https://doi.org/10.1029/2019ja027360
https://doi.org/10.1029/2019ja027360
Autor:
Annalisa Molini, Taha B. M. J. Ouarda, Christian Charron, Kondapalli Niranjan Kumar, Ghouse Basha, D. V. Phanikumar
Publikováno v:
Climate Dynamics. 53:5329-5347
The Middle East can experience extended wintertime spells of exceptionally hot weather, which can result in prolonged droughts and have major impacts on the already scarce water resources of the region. Recent observational studies point at increasin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6010e985f93408052bcba58471ba27c4
https://doi.org/10.1007/s00382-019-04866-2
https://doi.org/10.1007/s00382-019-04866-2
Autor:
Karanam Kishore Kumar, K. Niranjan Kumar, Manish Naja, Ghouse Basha, D. V. Phanikumar, Som Sharma, Taha B. M. J. Ouarda, Madineni Venkat Ratnam
Publikováno v:
Dynamics of Atmospheres and Oceans. 85:28-40
A diagnostic investigation of an extreme rainfall episode that occurred over the central and north Indian region is carried out in this study using data from a suite of observations from space-borne instruments and the reanalysis datasets. This event
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::79326e5758597deac1ef38295361b95e
https://doi.org/10.1016/j.dynatmoce.2018.12.002
https://doi.org/10.1016/j.dynatmoce.2018.12.002
The 22 July 2009 Total Solar Eclipse: Modeling D Region Ionosphere Using Narrowband VLF Observations
Publikováno v:
Journal of Geophysical Research: Space Physics. 124:616-627
We present D region ionospheric response to 22 July 2009 total solar eclipse by modeling 19.8‐kHz signal from NWC very low frequency (VLF) navigational transmitter located in the Australia. NWC VLF signal was received at five stations located in an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f75d2c5d909fdd63c20430fc395aae8b
https://doi.org/10.1029/2018ja026130
https://doi.org/10.1029/2018ja026130
Effect of total Lunar Eclipse of 27th July 2018 on the D-region Ionosphere by using VLF observations
In this report, an effort for the first time has been made to investigate the effect of Total Lunar Eclipse occurred on 27th July 2018 (the longest lunar eclipse in the 21st century) on the D-region ionosphere. Very Low Frequency (VLF) navigational t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0e67d773b298cbabd916c9910890c0df
