Analytical Study of Urban Heat Spot Patterns in Colombo District from 1988 – 2019 based on Landsat Data

Autor: Saumya Chathuranga, Chandana Jayaratne

Publikováno v: International Journal of Disaster Management, Vol 5, Iss 1, Pp 15-34 (2022)

Researching on urban heat island (UHI) is a hot topic among urban designers due to its adverse impacts. This paper focuses on studying spatial and temporal dynamicity of surface UHI in the Colombo district based on correlations between land surface t

Externí odkaz: https://doaj.org/article/2ec10686e9bd475e8922ed6582fbb9d1

Characterizing the possible interior structures of the nearby Exoplanets Proxima Centauri b and Ross-128 b

Autor: Chandana Jayaratne, Saraj Gunesekera, Mahesh Herath

Publikováno v: Monthly Notices of the Royal Astronomical Society. 500:333-354

We developed a new numerical model to constrain the interior structure of rocky Exoplanets, and applied it to the nearby planets Proxima Centauri b and Ross-128 b. The recently measured elemental abundances of red dwarfs and Alpha Centauri were utili

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6226c467405fd08e5302fb607aaeaea7
https://doi.org/10.1093/mnras/staa3110

Two temperate sub-Neptunes transiting the star EPIC 212737443

Autor: R. Wells, Daniel F. Evans, John H. Livingston, Martin Dominik, M. Rabus, J. Tregloan-Reed, Jesper Skottfelt, Tobias C. Hinse, Chandana Jayaratne, Jesús Hernández, Mahesh Herath, Saraj Gunesekera, U. G. Jørgensen, Cuc T. K. Lý

Publikováno v: Herath, M, Hinse, T C, Livingston, J H, Hernandez, J, Evans, D F, Wells, R, Gunesekera, S, Tregloan-Reed, J, Rabus, M, Skottfelt, J, Dominik, M, Jorgensen, U G, Jayaratne, C & Ly, C T K 2019, ' Two temperate sub-Neptunes transiting the star EPIC 212737443 ', Monthly Notices of the Royal Astronomical Society, vol. 488, no. 1, pp. 536-546 . https://doi.org/10.1093/mnras/stz1641

We report the validation of a new planetary system around the K3 star EPIC 212737443 using a combination of K2 photometry, follow-up high-resolution imaging and spectroscopy. The system consists of two sub-Neptune sized transiting planets with radii

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::33e14f2dfa7b1f37f6cbd0248ddddcef
https://doi.org/10.1093/mnras/stz1641

Seasonal variation of inter-hemispheric field-aligned currents deduced from time-series analysis of the equatorial geomagnetic field data during solar cycle 23-24

Autor: Akiko Fujimoto, Manjula Ranasinghe, Chandana Jayaratne, Akimasa Yoshikawa

Publikováno v: Earth, Planets and Space, Vol 73, Iss 1, Pp 1-10 (2021)

The east–west component of magnetic field variation (∆D-component) at Davao station (Philippines, geomagnetic latitude: – 2.22˚N) are used to investigate the characteristics of the long-term Inter-Hemispheric Field-Aligned Currents (IHFACs) ba

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7614061328bf5e10ceb3776e22fe7280
https://kyutech.repo.nii.ac.jp/records/7866

Comparison of preliminary breakdown pulses observed in Sweden and in Sri Lanka

Autor: Chandana Jayaratne, Vernon Cooray, Chandima Gomes

Publikováno v: Journal of Atmospheric and Solar-Terrestrial Physics. 60:975-979

In this paper we have analysed breakdown pulse trains preceding the first return stroke in 47 negative cloud-to-ground (CG) lightning flashes observed in Sri Lanka (tropics) and that in 41 negative CG flashes recorded in Sweden (temperate regions). I

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c5c5b68d681be34b0f41c14a908259bb
https://doi.org/10.1016/s1364-6826(98)00007-8