Tag Archives: Earth

Global Map – Wind, Weather, Ocean

Wan’t to have a look at present condition of wind, weather and ocean

Here it is
earth.nullschool.net

You can see high winds, low pressure regions, hurricanes, typhoons, cyclones, arctic air circulation, ITCZ ( inter tropical convergence Zone).

Pretty useful, when planning travels or any of your solo outdoor adventures. Although don’t follow it just like that, combine it with local weather forecasts, but its fun and lot of learning by just looking at this.

 

Malthus is true but needs Revision

Thomas Robert Mathus theory, “Principle of Population” proposed that human population grows exponentially,while food production grows at an arithmetic rate.

Malthus theory has been questioned by many and there exist many critique for the same. Malthus theory’s final result targets towards the available food for the population, but in reality this theory needs revision, there needs to be added other factors.

Population Growth+Energy Demand+Environmental Degradation together will bring the final output i.e. decreased availability of quality and real food.

Quality & Real Food, is it really available today, genetic research has led to genetically modified crops, which are drought and bug resistant, need less water; this all sounds good, but what about the production and distribution.

Further, these days there are lot of synthetic food products in the market, so no quality food here.

Weather, Climate & Atmosphere, are they the same thing?

Atmosphere is the air that surrounds us and the difference between weather and climate is a measure of time. Weather is what conditions of the atmosphere are over a short period of time, and climate is how the atmosphere “behaves” over relatively long periods of time.

Meteorology is the science of weather & Climatology is science of Climate.

Meteorology is the science of weather. The three basic aspects of meteorology are observation, understanding and prediction of weather. There are many kinds of routine meteorological observations. Some of them are made with simple instruments like the thermometer for measuring temperature or the anemometer for recording wind speed. Weather data is collected using satellites and other means and these are plotted on weather charts and analyzed at forecasting centers. Weather forecasts are then made.


Climate
is how the atmosphere “behaves” over relatively long periods of time & Climatology is science of Climate.

Do climates change? Yes. Climates may undergo large permanent changes and short-term changes.

Take Rainforest as an example, look at the annual temperatures. They vary in a specific way. If we cut down all of the trees in the forest, the temperatures will heat up. Since it is unlikely the forest will be able to grow back for hundreds of years, you would see a long-term climate change.

El Nino and La Nina are known as short term climate change.

Hurricane Matthew

With Hurricane Matthew battering Florida, Haiti and with over 800 deaths this Category 3 storm has turned into a nightmare for many.

But exactly causes the hurricane and are we responsible?

Hurricanes are intense low pressure systems that form over warm ocean waters  and their source of energy is water vapor, which is evaporated from the ocean surface. Hurricanes gradually die as they move over cooler waters, which do not have the heat energy necessary to evaporate sufficient water vapor to fuel the hurricane. 

Global warming has raised the average global temperature by about 1°F (0.6 Deg C) over the past century. In the oceans, this change has only been about 0.18 Deg F (0.1 DegC). (source:http://ocean.nationalgeographic.com/ocean/explore/pristine-seas/critical-issues-sea-temperature-rise/).
But, this 0.1 Deg C is proving to be a big problem for us and the results as we all know are catastrophic, the latest example being that of hurricane Matthew. 

CO2 levels for August’2016

Its 9th September today and the weather doesn’t look good, its a bit hazy. While scouring the web today I came across the following piece of data.

CO2 levels for August,2016 have been recorded at 404.07.

In January,2005 this value was 378.21.

The current value means an increase of approximately 7 percent in the last 11 years.

Yes, CO2 is a green house and it important for a warm climate but higher value of CO2 is dangerous and we call this global warming.

Source: http://climate.nasa.gov/vital-signs/carbon-dioxide/