STEM与日常科技·英语30篇（5）
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STEM Light Read: Why Frost Flowers Bloom on Sea Ice in Subzero Air (2026-D029)
STEM轻科普延展阅读·独立成篇（2026-D029）
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Frost flowers grow on young sea ice when frigid air meets moist, salty brine rising through cracks.霜花在年轻海冰上生长，当极寒空气遇到从冰裂隙中涌出的潮湿、高盐卤水时形成。
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As brine wicks upward, it freezes instantly in temperatures below −20°C, forming delicate ice crystals.卤水沿冰向上渗出，在低于−20°C的温度下瞬间冻结，形成纤细的冰晶。
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Salt lowers water’s freezing point, allowing liquid brine to reach the surface even in extreme cold.盐分降低水的冰点，使液态卤水即使在极寒条件下也能抵达冰面。
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Wind and humidity affect crystal shape—calm air yields feathery structures; breezes make stubbier ones.风速与湿度影响晶体形态：静稳空气生成羽状结构，微风则形成更粗短的晶体。
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Each flower contains concentrated salt, making it a natural microhabitat for cold-adapted microbes.每朵霜花都富含盐分，构成嗜冷微生物的天然微栖息地。
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Scientists collect them to study microbial life surviving in Earth’s harshest surface environments.科学家采集霜花，以研究能在地球最严酷地表环境中存活的微生物生命。
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Unlike snowflakes, frost flowers form without falling from clouds and grow outward from surfaces.与雪花不同，霜花并非自云中降落，而是从表面向外生长而成。
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Their presence signals rapid ice formation and helps calibrate satellite measurements of sea ice age.其存在标志海冰正快速形成，并有助于校准卫星对海冰年龄的遥感测量。
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Climate models now include frost flower physics to improve Arctic salinity and albedo estimates.当前气候模型已纳入霜花物理过程，以提升对北极海域盐度和反照率的估算精度。
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This fragile beauty illustrates how chemistry, physics, and biology intertwine at freezing frontiers.这转瞬即逝的美，展现了化学、物理与生物学在冰冻前沿的紧密交织。