How does geography use solar radiation to judge dates and weather conditions?
First, the influence of solar radiation on the earth.
1. Solar radiation: The sun constantly radiates energy to the surroundings in the form of electromagnetic waves.
Solar radiation-the main components of the sun are H and He; Energy-nuclear fusion reaction
2. The influence of solar radiation on the earth.
First, the influence of solar radiation on the formation and change of geographical environment-solar radiation energy is the main driving force to maintain the surface temperature and promote the activities and changes of water, atmosphere and organisms on the earth.
The formation and change of geographical environment are influenced by solar radiation, both directly (such as the weathering of rocks caused by temperature changes) and indirectly (solar radiation is the driving force for the development and change of geographical environment elements such as atmosphere, water and biology on the earth).
Second, the influence of solar radiation on people's production and life-solar radiation energy is the energy used in people's daily life and production.
3. Annual distribution of solar radiation in China.
(1) Solar energy-rich areas: Qinghai-Tibet Plateau, western Inner Mongolia Plateau, followed by Xinjiang and other places.
(2) Solar-poor areas: Sichuan Basin, Guizhou and Hunan.
Second, the influence of solar activity on the earth.
Solar atmosphere: From inside to outside, there are photosphere, chromosphere and corona.
(A) the main types of solar activity
Photosphere-sunspot (number and size are signs of solar activity intensity)
Chromosphere flare (the strongest manifestation of solar activity)
The period of sunspots and flares is 1 1 year.
(b) the influence of solar activity on the earth.
1, the impact on the earth's climate
Correlation between sunspots and annual precipitation;
① There is a positive correlation between precipitation and sunspot number in some places, and a negative correlation in some places; For a place, one period may be negatively correlated and another period may be positively correlated.
② The period of interannual variation of precipitation is roughly the same as that of sunspots, which is 1 1 year.
2. Impact on the Earth's ionosphere
The electromagnetic wave emitted during the flare burst enters the ionosphere of the earth, causing ionospheric disturbance and reducing its ability to reflect radio waves, thus leading to the attenuation or interruption of short-wave radio communication.
3. Influence on the Earth's magnetic field
When the solar activity increases, the charged particle stream thrown by the solar atmosphere can disturb the earth's magnetic field, resulting in a "magnetic storm" phenomenon, which makes the magnetic needle vibrate violently and cannot indicate the direction correctly. aurora
Third, the moon phase and its changes
1, the cause of the moon phase:
(1) The moon itself is neither luminous nor transparent, but it can reflect sunlight.
(2) Because the relative positions of the sun, the earth and the moon are constantly changing, the illuminated part of the moon seen by observers on the earth is also constantly changing, resulting in different visual shapes, that is, the moon phase.
2. The changing law of the moon phase.
Moon phase name new moon first quarter moon full moon second quarter moon
Date of appearance: Day 1, Day 7, Day 8, Day 15, Day 16, Day 22 and Day 23.
The positions of the three balls are the same straight line, and the connecting line is at right angles, and the same straight line is at right angles to the connecting line.
The moon is centered on the east of the sun and the earth is centered on the west of the sun.
Compared with sunrise, it rises and falls at the same time, rising late and then falling, rising early and falling early.
The moon rises in the morning, noon, dusk and midnight.
The moon sets at dusk, midnight, early morning and noon.
Look at the moon at night, the west at night, and the east at night.
The moon faces west and east.
What we see is the same Zhang Yue face-the rotation of the moon is exactly the same as that of period of revolution, which is 27.3 days.
The sharp corner of the moon phase can't face the sun, but usually tilts to the left or right-the moon is illuminated by sunlight, so the bright side of the moon must face the sun.
1 month to Mid-Autumn Festival, that is, around the vernal equinox, the Mid-Autumn Festival is particularly bright. The day is as long as the night. Located in the east, the moon is directly illuminated by the western sun and receives the most sunlight. At this time, the moon is closest to the sun and reflects the most light to the ground. Therefore, the moon in Mid-Autumn Festival looks the brightest and brightest. From the climate analysis, it is clear in autumn, controlled by high pressure, and the dust and smoke on the surface are not easy to enter the air, and the dust and water vapor in the atmosphere are much less than in the previous period.
Mujiangyin (Bai Juyi): A setting sun is spreading in the water, half river rustling and half river red. On the third night of September, the dew is like a pearl and the moon is like a bow. The moon phase described is Emei Moon.
Related reference materials:
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