MAN-MADE CLOUDS- PHOTOS BY ROSALIND PETERSTON, WWW.CALIFORNIASKYWATCH.ORG

NASA NEWSLETTER (2005) Persistent contrails are “trapping warmth in

the atmosphere.” Persistent contrails produce man-made

clouds that could negatively impact agricultural crop production.

“Any increase in global cloud cover will contribute to long-term changes in Earth’s climate. Likewise, any change in Earth’s climate may have effects on natural resources…”

2009 JET LEAVING CONTRAIL PICTURE BY BRENDAN O.

STOP AND START PERSISTENT CONTRAILS

BURST

RIBBED TRAIL

ET LEAVING CONTRAIL OVER UKIAH, CA 2009

JET LEAVING PERSISTENT JET CONTRAIL MONTANA SKIES 2007-2008

PERSISTENT JET CONTRAIL IN WILLITS, CA AUGUST 12, 2009 BY BRENDAN OLEARY- FEATHER

X’S AND RIBBED TRAIL

EXPANDED X-LARGE TRAIL

X-LARGE TRAIL

ARIZONA- PERSISTENT PARALLELS

OHIO

NORTH GLENN, COLORADO

ESPANOLA, NEW MEXICO

IDAHO

LAS VEGAS, NEVADA

SOUTHERN OREGON

JETS LEAVING PERSISTING JET CONTRAILS DAVIS, CA BY ROSALIND 2008

SOUTHERN OREGON PERSISTENT JET CONTRAIL BLITZ SEPTMBER 7, 2009

JET LOOP + MAN-MADE CLOUDS + WHITE HAZE CALPELLA CA BY ROSALIND SEPTEMBER 12, 2004

EXPANDED_PJC_WILLITS_8-12-09

PERSISTENT JET CONTRAILS OVER WILLITS, CA AUGUST 12, 2009 BY BRENDAN OLEARY

MAN-MADE CLOUDS UKIAH, CA MAY 28, 2002 BY ROSALIND

PERSISTENT JET CONTRAILS & MAN-MADE CLOUDS CALPELLA, CA BY ROSALIND APRIL 1, 2005

HAZE + MAN-MADE CLOUDS LAKE MENDOCINO, UKIAH, CA BY ROSALIND

BLACK CONTRAILS + WHITE HAZE + MAN-MADE CLOUDS UKIAH, CA DECEMBER 10, 2004 BY ROSALIND

MAN-MADE CLOUDS WITH NEW JET CONTRAILS OVER WILLITS, CA BY BRENDAN OLEARY #6 AUGUST 12, 2009

BLACK CARBON QUESTION - MAN-MADE CLOUDS REDWOOD VALLEY, CA APRIL 1, 2005 BY ROSALIND.

MAN-MADE CLOUDS & PERSISTING JET CONTRAILS REDWOOD VALLEY, CA BY ROSALIND AUGUST 24, 2004

UKIAH, CA

SKYVAULT

BEGINNING OF BURST PATTERN

UKIAH, CA

UKIAH, CA

X-FILES

X VIBRANT SPECTRUM