As a 27-year Sacramentan, it’s pretty easy to detect that there are fewer winter moments of dense, bone-penetrating valley fog than before. Winter used to mean days on end without seeing a sun in the sky. But how many of us are just as aware that the blessed Delta breeze also isn’t what it used to be? (It sure abandoned us in July.) Or how this ebbing of the wind has shifted the ecology of the Sacramento-San Joaquin Delta itself?