Judul: Analisis Keterkaitan Struktur Vertikal Atmosfer Terhadap Pembentukan Awan Kovektif (Studi Kasus: Bandara Soekarno Hatta).
Abstrak: Pembentukan awan konvektif dapat dianalisis dengan menggunakan perangkat lunak RAOB (Rawinsonde Observation Program). Penelitian ini bertujuan untuk mengetahui profil vertikal atmosfer di Bandara Soekarno Hatta tahun 2014, menganalisis keterkaitan antara 27 indeks RAOB terhadap kondisi vertikal atmosfer, dan melakukan analisis terhadap indeks RAOB yang memiliki kontribusi tertinggi dengan pembentukan awan konvektif. Penapisan indeks-indeks RAOB dilakukan untuk mendapatkan indeks dominan yang mempengaruhi pembentukan awan konvektif. Nilai mixing ratio dijadikan sebagai variabel y dalam melakukan analisis regresi berganda dan variabel-variabel x merupakan indeks RAOB. Hasil penelitian ini didapatkan pola vertikal atmosfer yang berbeda pada bulan basah (Januari) dan bulan kering (Agustus) yang meliputi suhu udara, suhu titik embun, kelembaban relatif, kecepatan angin, dan mixing ratio. Setiap indeks RAOB memiliki keterkaitan masing-masing dengan adanya awan konvektif, baik terkait langsung (14 indeks) maupun tidak langsung (13 indeks). Indeks RAOB yang dominan dari 27 indeks yang dianalisis pada penelitian ini yaitu showalter index, CCL (Convective Condensation Level), PW (Precipitable Water), dan Kindex dengan rata-rata kontribusi pada tahun 2014 sebesar 59%, 35%, 31%, dan 23%.
Keyword: konveksi, mixing ratio, pembentukan awan konvektif, RAOB, struktur vertikal atmosfer

Judul: Karakteristik Udara Atas Wilayah Bandar Udara Soekarno-Hatta Menggunakan Program RAOB Studi Kasus Tahun 2007-2008
Abstrak: This paper describes the upper air characteristic using the RAOB program. The focus is in significant level of upper air vertical stability, the significant level describe by Level of Free Convective (LFC), Lifting Condensation Level (LCL) and Convective Condensation Level (CCL). This research was using sounding data from Soekarno-Hatta air port at December 2007 to November 2008. The upper air characteristic is very different in every few month because the implication of seasonal change in object area. The comparison between rainy season (December-January-February) and dry season (June-July-August) had shown the different pattern of upper air characteristic and diurnal variation. The different amount of wet air for this two group of months was describe using cross section from RAOB program application
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Judul: Phylogeography and Species Limits in the Papuan White Snake (Micropechis ikaheka) (Reptilia: Serpentes: Elapidae)
Abstrak: Papua white snake, Micropechis ikaheka, has been distingushed into two subspecies M.i. ikaheka and M.i. fasciatus. However, due to lack of data on their morphology, distribution and ecology, both subspecies often ignored in scintific discussions and refers only byas , Micropechis ikaheka. This study was designed to document the differences between M.i. ikaheka and M.i fasciatus by using scales characteristics and reproductive organ or hemipenes. The study also examine, zoogeography, habitat, diet and cannibalism of both subspecies to better understanding the the ecology of one of the most venomous snakes in the world. This study consists of three topics with method and also different in the size samples, respectively. The first study is the histology and microtopography of the skin were studied using paraffin method and Scanning Electron Microscope (SEM). The second is the hemipenis were examined by following Myers and Cadle (2003), and Zaher and Prudente (2003). The third is the abdominal surgery was carried out to document diet type and the investigate phenomenon of cannibalism in the snake. Specimens for this study came from the collection from Museum Zoologicum Bogoriense (MZB) and Universitas Negeri Papua’s Laboratory (LZU). The research result also indicated that the markers of skin and hemipenis described the same structure and microornamentation in all M. ikaheka groups being compared. Based specimens examined morphological descriptions do not s support the further differentiation in Micropechis. In short, two markers that used in this study could not sufficiently indicate the differences in the level of species and subspecies of M. ikaheka. The study, however, were able to delineate zoogeography and skin color patterns, which fall into four groups: M. i. ikaheka; M. i. fasciatus. M. i. ssp. “intermediate”; and M. i. ssp “black”. This study also revealed that color variations did not overlap in their geographic distribution. It is therefore, it suggested that environmental factors may contribute to the skin color variations. It also assumed that habitat discontinuous and biogeography factors may also cause the loss of the connection between the original populations (vicarians) or follow colonization events (dispersal). The examined of 22 stomach contents of M. ikaheka shows this species is carnivorous, and prey on vertebrates such as amphibians, fish, reptiles, and Mammals. These snakes are opportunistic predators since they prey on all that can be captured, but mainly reptiles (61.5%), followed by mammals and fish (both 15.4%), and amphibians (7.7%). Although categorized as terrestrial animal, the diet study showed that M. ikaheka snakes often go into the water to hunt for fish (the sample from Yapen island), including eel (the sample from Aru island). Based on prey items indentified, there is evidence that M. ikaheka is cannibal. At this time, there still no record on reason for cannibalism, but it is assumed that cannibalism was due to competition between populations and means to control population.
Keyword: geographic variation, white snake, papua