WMOD00495

• Title: Night Vesus Day Cloud Seeding in Langmuir's Periodic Experiment
• Weather Modification - Doc Type: Report

Table 1

IS THERE A DIFFERENCE BETWEEN
NIGHTTIME- AND DAYTIME-SEEDED CYCLES?

IN PERIODICITY OF PRECIPITATION

By Langmuir regions
Sum of 15 Langmuir regions
Wea Bur Region 4 (SC, GA, FL)

See map, figure 1
YES (+) P = 0.015
LIKELY (+) P = 0.06

IN PERIODICITY OF TEMPERATURE ALOFT

YES (+)

P = 0.005

IS THERE A DIFFERENCE BETWEEN
NIGHTTIME-SEEDED AND NONPERIODIC-SEEDED CYCLES?

IN PERIODICITY OF PRECIPITATION

Cycles 13, 15, 17, 19, 21 vs. 1, 23-29
Cycles 13, 15, 17, 19, 21 vs. 30-37

YES (+)
YES (+)

P = 0.005
P = 0.0001

IN PERIODICITY OF TEMPERATURE ALOFT

vs. 200 cycles, 1935-1949

YES (+)

P = 0.015

IS THERE A DIFFERENCE BETWEEN
DAYTIME-SEEDED AND NONPERIODIC-SEEDED CYCLES?

IN PERIODICITY OF PRECIPITATION

Cycles 14, 16, 18, 20, 22 vs. 1, 23-29
Cycles 14, 16, 18, 20, 22 vs. 30-37

IN PERIODICITY OF TEMPERATURE ALOFT

NO (-)
YES (+)

P > 0.4
P = 0.0001

vs. 200 cycles, 1935-1949

YES (+)

P = 0.05

4