FROST WATCHMARROW VALLEY / 14 APR
Frost report / Marrow Valley
Thirty minutes
to frost
One cold night can erase a whole year of cherries. A report in five plates, from the orchard floor to the ridge.
Pre-dawn / the orchard
Fans on at −2
PLATE 01 / ILLUSTRATION / WIND MACHINE 3, UPPER BENCH (FICTIONAL)
F/2.8   1/60   ISO 1600
Mast head, 04:10−2.0°C
Mixes the airPulls warmer air from 10 m up down into the rows.
Wind machine · 10 m mast
RIDGE+1.8°C BENCH−0.4°C FLOOR−3.4°C N 012 km FROST SURVEY / SHEET 4MARROW VALLEY (FICTIONAL)
The bowl / cold-air drainage
Cold air pours downhill
5.2°between ridge and orchard floor, same night.
5 fans on the floorThe bench keeps only one.
Night of 14 April / hourly
Fans buy hours
2.6°C
Warmer at 05:00, the coldest hour: −3.6 in open air, −1.0 under fans.
SOURCE: Marrow Growers' station log (fictional dataset)
+6+4+20−2−4−6 20:0022:0000:0002:0004:0006:0008:00 −2°C BLOSSOM KILL 02:00 FANS ON 2.6°C OPEN AIR WITH FANS 4 H 35 MIN BELOW −2°C
PLATE 02 / ILLUSTRATION / FROSTED BLOSSOM, 05:10 (FICTIONAL)
F/1.8   1/125   ISO 800
Coldest hour05:10
Blossoms alive 94 / 100Under fans. Outside the fans: 61 of 100.
Crop saved
Frost watch
Reporting: Desk 12 / Marrow Valley · All places, people and figures here are fictional.
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