ग्‍लोबल वार्मि‍गं Tag

16 Dec

Posted at 07:11h in Miscellaneous
डॉ रामावतार यादव एवं डॉ वीर सिंह सहायक 18 views

Global warming is a growing threat to the environment पूरे विश्व में इंसानों की लापरवाही और निजी स्वार्थ से हमारी धरती की सतह दिनों-दिन गर्म होती जा रही है। पिछले 50 वर्षों में, औसत वैश्विक तापमान रिकॉर्ड इतिहास में सबसे तेज दर से बढ़ गया है और वैज्ञानिकों का कहना है कि अगर ग्लोबल वार्मिंग उत्सर्जन को नहीं रोका गया, तो अगली शताब्दी तक औसत तापमान 10 डिग्री फ़ारेनहाइट तक बढ़ सकता है। ग्लोबल वार्मिंग के क्या कारण है? ग्लोबल वार्मिंग के कारण होने वाले जलवायु परिवर्तन के लिये सबसे अधिक जिम्मेदार ग्रीन हाउस गैस हैं। ग्रीन हाउस गैसें, वे गैसें होती हैं जो बाहर से मिल रही गर्मी या ऊष्मा को...

13 Jun

Posted at 10:04h in Miscellaneous
15 views

भारतीय कृषि पर जलवायु परिवर्तन के प्रभाव का आकलन Climate change and variability are concerns of human being. There current droughts and floods threaten seriously the livelihood of billions of people who depend on land for most of their needs. The global economy is adversely being influenced very frequently due to extreme events such as droughts and floods, cold and heat waves, forest fires, landslips etc. The natural calamities like earthquakes, tsunamis and volcanic eruptions, though not related to weather disasters, may change chemical composition of the atmosphere. It will, in turn, lead to weather related disasters. The loss of forest cover, which normally intercepts rainfall and allows it to be absorbed by...

14 Sep

Posted at 08:30h in Miscellaneous
Sainath Nagula 3 views

ग्रीनहाउस गैस उत्पादन पर मानवकृत गतिविधियों और कृषि कार्यो का प्रभाव Human activities contribute to climate change by causing changes in Earth’s atmosphere in the amounts of greenhouse gas­es, aerosols (small particles), and cloudiness. Human activities like burning of fossil fuels (coal, oil and natural gas), deforestation and various agricultural and industrial practices, are altering the composition of the atmosphere and contributing to climate change.  These human activities have led to increased atmospheric concentrations of a number of greenhouse gases (GHGs), including carbon dioxide, methane, nitrous oxide, chlorofluorocarbons, and ozone in the lower part of the atmosphere. The largest known contribution comes from the burning of fossil fuels, which releases carbon dioxide gas to...

14 Sep

Posted at 08:02h in Miscellaneous
Sainath Nagula 2,222 views

कार्बन ट्रेडिंग पर अंतर्राष्ट्रीय सम्मेलन और वैश्विक पहल Carbon is the common denominator in all polluting gases that cause global warming. Carbon dioxide is the gas most commonly thought of as a greenhouse gas. It is responsible for about half of the atmospheric heat retained by trace gasses. It is produced primarily by burning of fossils fuels and deforestation accompanied by burning and bio-degradation of biomass.  It is estimated that if the CO2 increases in the atmosphere at the present rate and no positive efforts are pursued, the level of CO2 in the atmosphere would go up to 800-1000 ppm by the end of current century. Which may create havoc for all living...