Judul: Evaluasi Curah Hujan NASA POWER dengan Curah Hujan PengamatanWilayah Jakarta-Bogor
Abstrak: merupakan sumber data prediksi yang dihasilkan dari satelit. NASA POWER memiliki beberapa jenis data, seperti data curah hujan, radiasi, dan data untuk keperluan agroklimatologi. Di Indonesia, penggunaan NASA POWER harus dinilai terlebih dahulu sebelum digunakan secara luas. Penelitian ini bertujuan untuk mengevaluasi penggunaan NASA POWER di wilayah Jakarta-Bogor. Dalam penelitian ini, data NASA POWER dievaluasi dengan data curah hujan titik di wilayah Jakarta - Bogor. Di Jakarta, 3 stasiun dipilih yaitu Soekarno-Hatta, Kemayoran dan Tanjung Priok untuk mewakili ketinggian rendah, sedangkan dua stasiun di Bogor Citeko dan Bogor dapat mewakili lintang tinggi. Evaluasi didasarkan pada kriteria statistik yaitu Uji Kolasi, MAE, RMSE dan Mann-Whitney. Setiap hari, korelasi antara kedua curah hujan rendah (r = 0,19), tetapi korelasi yang lebih tinggi diharapkan untuk bulanan (r = 0,8894) dan tahunan ( r = 0,7921) dasar. Temuan menunjukkan bahwa penggunaan POWER NASA harus diperbaiki terlebih dahulu untuk penggunaan sehari-hari.
Keyword: Curah Hujan, Kolerasi, NASA POWER

Judul: Evaluasi Curah Hujan GSMaP dan TRMM TMPA dengan Curah Hujan Permukaan Wilayah Jakarta – Bogor
Abstrak: Global Satellite Mapping of Precipitation (GSMaP) and Tropical Rainfall Measuring Mission Multi-Satellite Precipitation Analysis (TRMM TMPA) are global measured precipitation projects using satellite combination (blended) technique of infrared sensor and microwave sensor. This research having purpose to evaluate GSMaP and TRMM data with Surface rainfall data in various topographies (beach, level-land, mountainous region, and The whole area) and temporal variation (daily, 10days, and monthly) in Jakarta-Bogor area. The evaluation is done using visual and statistical comparison method (correlation coefficient, MAE, RMSE, and Mann-Whitney Test). The evaluation result of daily and 10days of GSMaP in all area studies showing a pattern didn’t follow the Surface rainfall (r<0.20), while TRMM daily rainfall data in beach area and The whole having r>0.60 and the Mann-Whitney test shows TRMM doesn’t have significant difference with surface rainfall data. 10days TRMM rainfall in all region, except mountainous region, shows TRMM rainfall can follow surface rainfall pattern (r>0.77). Monthly GSMaP data comparison to surface rainfall showing correlation more than 0.60 on beach and land area can be applied, by using correction equation, because GSMaP rainfall data always lower than surface data. The monthly TRMM rainfall data can be applied in all studies area because the pattern is suitable to surface rainfall data (maximum correlation is 0.98). Error identification shows that there is warm rain and high variation on land surface emission especially in mountainous area causing either GSMaP and TRMM cannot follow the surface rainfall data. GSMaP correction equation in beach region, shows the parameter that affect error are surface temperature and specific humidity in 850mb, while at region II, III, and The Whole there is no local parameter which has influence. TRMM correction equation in region III(mountainous area), shows local parameter which has an influence to accurate of this TRMM is surface pressure, wind 850mb, interaction of meridional wind and surface slope, air temperature 850mb, soil humidity in 10-200cm, and skin temperature.
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Judul: Perilaku Kawin dan Siklus Reproduksi Deroceras laeve, Filicaulis bleekeri, dan Meghimatium bilineatum (Mollusca: Gastropoda)
Abstrak: Deroceras laeve, Filicaulis bleekeri and Meghimatium bilineatum are members of Gastropoda (Mollusca) that live as pest. However they are potential for protein source of animal livestock. Mating behavior and reproductive cycle of those were inspected for 42 days. The mating phase of F. bleekeri and M. bilineatum started from touching each other with tentacle or touching another slug’s body or tail with tentacle, slug come closer to other which will be the partner, stuck each other position, and withdrawal. The mating phase of D. laeve investigated slug touched body or tail another slug with tentacle. Mating behavior of M. bilineatum and F.bleekeri which stick each other position was the longest mating duration (average 281,4 second and 561,9 second respectly) during 42 days observation. D. laeve produced 264 eggs, took average incubation period for 14 days and had hatching percentage 60.98%. The fecundity per individual is 0.31/day.
Keyword: Deroceras laeve, Filicaulis bleekeri, mating behaviour, Meghimatium bilineatum, slug egg