Hail—pieces of ice that form and fall from clouds instead of snow or rain—has always been a problem for farmers in some areas of the United States. Hail pellets can fall with great force and destroy crops in the field. Over the last few decades, a method of reducing hail, called “cloud seeding,” has been tried. In cloud seeding, the chemical silver iodide is sprayed on storm clouds from an airplane. This makes the clouds produce harmless rain or snow instead of hail. Several pieces of evidence suggest that cloud seeding has been effective in protecting crops from hail.
Laboratory experiments
Experiments in the laboratory support the idea that cloud seeding is effective. Hail usually forms in water vapor that is close to the freezing point. However, when experimenters added silver iodide to cold water vapor in the laboratory, they often observed light snow forming instead of hail pellets.
Evidence from Asia
There is evidence about the effectiveness of cloud seeding from several countries around the world. In some Asian countries, for example, cloud seeding has been successfully used to control precipitation in urban areas. These positive results suggest that cloud seeding should also be effective in protecting fields and farms in the United States.
Local studies
A few local studies also support the value of cloud seeding. One study conducted in a farming region in the central United States, for example, directly monitored crop damage due to hail. The study found that in an area where cloud seeding was used there was reduced hail damage compared to previous years.
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| Post date | Users | Rates | Link to Content |
|---|---|---|---|
| 2023-03-01 | zaid | 73 | view |
| 2023-03-01 | zaid | 76 | view |
| 2023-01-18 | nikki07hung | 78 | view |
| 2022-09-17 | Ibne Arabi | 76 | view |
| 2022-06-30 | ellen87713 | 90 | view |
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Transition Words or Phrases used:
also, but, finally, first, furthermore, hence, however, if, nonetheless, second, so, still, therefore, whereas, while, in addition
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 10.0 10.4613686534 96% => OK
Auxiliary verbs: 5.0 5.04856512141 99% => OK
Conjunction : 5.0 7.30242825607 68% => OK
Relative clauses : 14.0 12.0772626932 116% => OK
Pronoun: 18.0 22.412803532 80% => OK
Preposition: 39.0 30.3222958057 129% => OK
Nominalization: 10.0 5.01324503311 199% => OK
Performance on vocabulary words:
No of characters: 1454.0 1373.03311258 106% => OK
No of words: 279.0 270.72406181 103% => OK
Chars per words: 5.21146953405 5.08290768461 103% => OK
Fourth root words length: 4.08696624509 4.04702891845 101% => OK
Word Length SD: 2.72631010596 2.5805825403 106% => OK
Unique words: 150.0 145.348785872 103% => OK
Unique words percentage: 0.537634408602 0.540411800872 99% => OK
syllable_count: 447.3 419.366225166 107% => OK
avg_syllables_per_word: 1.6 1.55342163355 103% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 3.0 3.25607064018 92% => OK
Article: 7.0 8.23620309051 85% => OK
Subordination: 2.0 1.25165562914 160% => OK
Conjunction: 1.0 1.51434878587 66% => OK
Preposition: 2.0 2.5761589404 78% => OK
Performance on sentences:
How many sentences: 12.0 13.0662251656 92% => OK
Sentence length: 23.0 21.2450331126 108% => OK
Sentence length SD: 34.5642517639 49.2860985944 70% => OK
Chars per sentence: 121.166666667 110.228320801 110% => OK
Words per sentence: 23.25 21.698381199 107% => OK
Discourse Markers: 10.8333333333 7.06452816374 153% => OK
Paragraphs: 4.0 4.09492273731 98% => OK
Language errors: 0.0 4.19205298013 0% => OK
Sentences with positive sentiment : 5.0 4.33554083885 115% => OK
Sentences with negative sentiment : 5.0 4.45695364238 112% => OK
Sentences with neutral sentiment: 2.0 4.27373068433 47% => OK
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.20177021498 0.272083759551 74% => OK
Sentence topic coherence: 0.0741882350008 0.0996497079465 74% => OK
Sentence topic coherence SD: 0.0543500338988 0.0662205650399 82% => OK
Paragraph topic coherence: 0.113771241507 0.162205337803 70% => OK
Paragraph topic coherence SD: 0.0471618132846 0.0443174109184 106% => OK
Essay readability:
automated_readability_index: 14.7 13.3589403974 110% => OK
flesch_reading_ease: 48.13 53.8541721854 89% => OK
smog_index: 8.8 5.55761589404 158% => OK
flesch_kincaid_grade: 12.3 11.0289183223 112% => OK
coleman_liau_index: 13.23 12.2367328918 108% => OK
dale_chall_readability_score: 8.97 8.42419426049 106% => OK
difficult_words: 74.0 63.6247240618 116% => OK
linsear_write_formula: 14.5 10.7273730684 135% => OK
gunning_fog: 11.2 10.498013245 107% => OK
text_standard: 15.0 11.2008830022 134% => OK
What are above readability scores?
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Rates: 80.0 out of 100
Scores by essay e-grader: 24.0 Out of 30
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Note: the e-grader does NOT examine the meaning of words and ideas. VIP users will receive further evaluations by advanced module of e-grader and human graders.