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  #1  
Old 12th August 2011
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Default Hujan Buatan Atau Modifikasi Cuaca?



Pernah mendengar hujan buatan? Wah apakah itu berarti kita manusia sudah bisa �membuat� hujan sendiri? Bagaimana caranya? Apakah dengan �menyemprotkan� air dari pesawat terbang? Berapa banyak air yang di�terbangkan�? Kenapa diperlukan hujan buatan?

Sejarah Hujan buatan di dunia dimulai pada tahun 1946 oleh penemunya Vincent Schaefer dan Irving Langmuir, dilanjutkan setahun kemudian 1947 oleh Bernard Vonnegut.
Yang sebenarnya dilakukan oleh manusia adalah menciptakan peluang hujan dan �mempercepat� terjadinya hujan. Nama yang digunakan sebagai upaya �membuat hujan� adalah menjadi Teknologi Modifikasi Cuaca (TMC) .

Di Sekolah kamu tentu tahu tentang proses terjadinya hujan kan? Yaitu dikenal dengan siklus hidrologi, ada penguapan air, pembentukan awan, dan turun menjadi hujan.
Nah yang dilakukan oleh manusia pada TMC, adalah �mempengaruhi� proses yang terjadi di awan sebagai �dapur� pembuat hujan. Sehingga mempercepat peluang terjadinya hujan.

Bahan untuk �mempengaruhi� proses yang terjadi di awan terdiri dari dua jenis yaitu:
  1. Bahan untuk �membentuk� es, dikenal dengan glasiogenik, berupa Perak Iodida (AgI)
  2. Bahan untuk �menggabungkan� butir-butir air di awan, dikenal dengan higroskopis, berupa garam dapur atau Natrium Chlorida (NaCl), atau CaCl2 dan Urea.


Bahan-bahan ini �disebar� dengan bantuan Pesawat terbang, Roket, dan disebar dari daerah tinggi (misal : puncak gunung). Penyebaran bahan �bibit hujan� tadi, harus memperhatikan kondisi yang akurat tentang arah angin, kelembaban dan tekanan udara, peluang terjadinya awan. Kerap terjadi, bahan-bahan yang sudah �disebar� tadi tidak menghasilkan hujan, justru �hilang� begitu saja.

Di Indonesia, upaya �hujan buatan� ini diperlukan untuk :
  1. Antisipasi Ketersediaan Air, misal pengisian waduk, danau, untuk keperluan air bersih, irigasi, pembangkit listrik (PLTA)
  2. Antisipasi Kebakaran hutan/lahan, kabut asap
Nah jika hujan tiba, dapatkah kamu menduga-duga, apakah ini hasil �hujan buatan� atau bukan ?. Oh ya kualitas air �hujan buatan� tidak terlalu berbeda dengan �hujan asli� lho, kamu tidak perlu khuatir air hujan nya berasa �asin� atau berbau.

sumber

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  #2  
Old 12th August 2011
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kalau hujan buatan kan cuma bisa sebentar yah miss.
kalau hujan tapi cuacanya panas itu namanya apa yah.?
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Old 12th August 2011
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Originally Posted by ilhamananto24 View Post
kalau hujan buatan kan cuma bisa sebentar yah miss.
kalau hujan tapi cuacanya panas itu namanya apa yah.?
dulu rasa2nya pernah denger namanya hujan tekek ato hujan ketek, bunyinya mirip2 kaya gitu.
hujan tapi masih ada sinar matahari....
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Old 12th August 2011
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Originally Posted by Chandra_Dewi View Post
dulu rasa2nya pernah denger namanya hujan tekek ato hujan ketek, bunyinya mirip2 kaya gitu.
hujan tapi masih ada sinar matahari....
ohh gitu yah..
kalau di adat sini mah kalau hujan tpi msh ada sinar matahari katanya kuntilanak ngelahirin.
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Old 12th August 2011
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Originally Posted by ilhamananto24 View Post
ohh gitu yah..
kalau di adat sini mah kalau hujan tpi msh ada sinar matahari katanya kuntilanak ngelahirin.

baru kali ini nih denger kuntilanak ngelahirin....
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Old 12th August 2011
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Originally Posted by Chandra_Dewi View Post
dulu rasa2nya pernah denger namanya hujan tekek ato hujan ketek, bunyinya mirip2 kaya gitu.
hujan tapi masih ada sinar matahari....
kalo d adat sunda kejadian kaya gini

disebut hujan poyan
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  #7  
Old 12th August 2011
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Originally Posted by DreamWorld View Post
kalo d adat sunda kejadian kaya gini

disebut hujan poyan
baru tahu juga nih.....
kalo di sunda disebut dengan hujan poyan.
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  #8  
Old 12th August 2011
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baru tahu juga nih.....
kalo di sunda disebut dengan hujan poyan.
yup semoga bermanfaat mbak
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  #9  
Old 12th August 2011
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ilhamananto24 ilhamananto24 is offline
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Originally Posted by Chandra_Dewi View Post

baru kali ini nih denger kuntilanak ngelahirin....
makanya itu miss. aneh.
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  #10  
Old 12th August 2011
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Originally Posted by ilhamananto24 View Post
ohh gitu yah..
kalau di adat sini mah kalau hujan tpi msh ada sinar matahari katanya kuntilanak ngelahirin.
Ngaco ente ndan. yang bener si kunti keguguran
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