4S Ranch Allied Gardens Alpine Baja Balboa Park Bankers Hill Barrio Logan Bay Ho Bay Park Black Mountain Ranch Blossom Valley Bonita Bonsall Borrego Springs Boulevard Campo Cardiff-by-the-Sea Carlsbad Carmel Mountain Carmel Valley Chollas View Chula Vista City College City Heights Clairemont College Area Coronado CSU San Marcos Cuyamaca College Del Cerro Del Mar Descanso Downtown San Diego Eastlake East Village El Cajon Emerald Hills Encanto Encinitas Escondido Fallbrook Fletcher Hills Golden Hill Grant Hill Grantville Grossmont College Guatay Harbor Island Hillcrest Imperial Beach Imperial Valley Jacumba Jamacha-Lomita Jamul Julian Kearny Mesa Kensington La Jolla Lakeside La Mesa Lemon Grove Leucadia Liberty Station Lincoln Acres Lincoln Park Linda Vista Little Italy Logan Heights Mesa College Midway District MiraCosta College Miramar Miramar College Mira Mesa Mission Beach Mission Hills Mission Valley Mountain View Mount Hope Mount Laguna National City Nestor Normal Heights North Park Oak Park Ocean Beach Oceanside Old Town Otay Mesa Pacific Beach Pala Palomar College Palomar Mountain Paradise Hills Pauma Valley Pine Valley Point Loma Point Loma Nazarene Potrero Poway Rainbow Ramona Rancho Bernardo Rancho Penasquitos Rancho San Diego Rancho Santa Fe Rolando San Carlos San Marcos San Onofre Santa Ysabel Santee San Ysidro Scripps Ranch SDSU Serra Mesa Shelltown Shelter Island Sherman Heights Skyline Solana Beach Sorrento Valley Southcrest South Park Southwestern College Spring Valley Stockton Talmadge Temecula Tierrasanta Tijuana UCSD University City University Heights USD Valencia Park Valley Center Vista Warner Springs

Chinese flame trees – an early sign of San Diego fall

October is aurora season

A Chinese Flame tree in full bloom in Southern California.
A Chinese Flame tree in full bloom in Southern California.

Chinese Flame Trees all over the San Diego region are displaying colorful clusters of orange, reddish, or salmon-pink seed pods. Good specimens line the south end of Balboa Drive in Balboa Park, and Lake Murray Boulevard through San Diego’s San Carlos district. Most of the remainder of San Diego’s ornamental trees will continue to remain drab until November, the onset of “autumn” botanically.

You don’t have photometric-quality eyes, but if you did, you might notice that earthshine on the Moon has gotten just a trace dimmer on average in recent years. This is due to a slow change in Earth’s average reflectivity (albedo) over some 20 years due to changing cloudiness trends. The earthshine fade that P. R. Goode and colleagues measured across two decades from Big Bear Solar Observatory is tiny; it amounts to Earth absorbing an additional 0.5 watt per square meter of incoming sunlight on average. But they say this change matches measurements made by other methods and is “climatologically significant.”

Decreased albedo due to cloudiness leads to a slight dimming of the moon.

Did you know that October is aurora season? Your chance of catching a display of the Northern Lights is greater now than average around the year, for reasons having to do with the tilt of Earth’s magnetic axis with respect to the incoming solar wind and the shape of Earth’s magnetosphere. This month the magnetosphere’s northern “throat”is well aimed to swallow charged particles from the Sun and steer them down toward the world’s north polar region. Sometimes a gust of particles widens the throat to include lands farther south. The mid-hours of the night are the likeliest time, and of course you want the Moon to have set by then. Keep an eye to the low north.

The above comes from the Outdoors listings in the Reader compiled by Jerry Schad, author of Afoot & Afield in San Diego County. Schad died in 2011. Planet information from SkyandTelescope.org.

Here's something you might be interested in.
Submit a free classified
or view all

Previous article

Daily News Cafe: looks like a breakfast-all-day

In our search for new variations, we sometimes forget how good the originals are.
A Chinese Flame tree in full bloom in Southern California.
A Chinese Flame tree in full bloom in Southern California.

Chinese Flame Trees all over the San Diego region are displaying colorful clusters of orange, reddish, or salmon-pink seed pods. Good specimens line the south end of Balboa Drive in Balboa Park, and Lake Murray Boulevard through San Diego’s San Carlos district. Most of the remainder of San Diego’s ornamental trees will continue to remain drab until November, the onset of “autumn” botanically.

You don’t have photometric-quality eyes, but if you did, you might notice that earthshine on the Moon has gotten just a trace dimmer on average in recent years. This is due to a slow change in Earth’s average reflectivity (albedo) over some 20 years due to changing cloudiness trends. The earthshine fade that P. R. Goode and colleagues measured across two decades from Big Bear Solar Observatory is tiny; it amounts to Earth absorbing an additional 0.5 watt per square meter of incoming sunlight on average. But they say this change matches measurements made by other methods and is “climatologically significant.”

Decreased albedo due to cloudiness leads to a slight dimming of the moon.

Did you know that October is aurora season? Your chance of catching a display of the Northern Lights is greater now than average around the year, for reasons having to do with the tilt of Earth’s magnetic axis with respect to the incoming solar wind and the shape of Earth’s magnetosphere. This month the magnetosphere’s northern “throat”is well aimed to swallow charged particles from the Sun and steer them down toward the world’s north polar region. Sometimes a gust of particles widens the throat to include lands farther south. The mid-hours of the night are the likeliest time, and of course you want the Moon to have set by then. Keep an eye to the low north.

The above comes from the Outdoors listings in the Reader compiled by Jerry Schad, author of Afoot & Afield in San Diego County. Schad died in 2011. Planet information from SkyandTelescope.org.

Sponsored
Here's something you might be interested in.
Submit a free classified
or view all
Previous article

Son of L.A. councilman indicted in USC scandal backed Gloria's mayoral campaign

Job-recipient Sebastian Ridley-Thomas furnished $1150 to election fund
Next Article

San Diego Reader’s Best Of issue 2021

Joshua trees in Mission Beach, Ace Hardware in Hillcrest, the regulars at Liberty Tobacco, the unnecessity of Balboa Park, “We live on the edge of paradise”
Comments
0

Be the first to leave a comment.

Sign in to comment

Sign in

Ask a Hipster — Advice you didn't know you needed Big Screen — Movie commentary Blurt — Music's inside track Booze News — San Diego spirits Classical Music — Immortal beauty Classifieds — Free and easy Cover Stories — Front-page features Drinks All Around — Bartenders' drink recipes Excerpts — Literary and spiritual excerpts Feast! — Food & drink reviews Feature Stories — Local news & stories From the Archives — Spotlight on the past Golden Dreams — Talk of the town Letters — Our inbox [email protected] — Local movie buffs share favorites Movie Reviews — Our critics' picks and pans Musician Interviews — Up close with local artists Neighborhood News from Stringers — Hyperlocal news News Ticker — News & politics Obermeyer — San Diego politics illustrated Outdoors — Weekly changes in flora and fauna Overheard in San Diego — Eavesdropping illustrated Poetry — The old and the new Reader Travel — Travel section built by travelers Reading — The hunt for intellectuals Roam-O-Rama — SoCal's best hiking/biking trails San Diego Beer — Inside San Diego suds SD on the QT — Almost factual news Sheep and Goats — Places of worship Special Issues — The best of Street Style — San Diego streets have style Surf Diego — Real stories from those braving the waves Tin Fork — Silver spoon alternative Under the Radar — Matt Potter's undercover work Unforgettable — Long-ago San Diego Unreal Estate — San Diego's priciest pads Your Week — Daily event picks
4S Ranch Allied Gardens Alpine Baja Balboa Park Bankers Hill Barrio Logan Bay Ho Bay Park Black Mountain Ranch Blossom Valley Bonita Bonsall Borrego Springs Boulevard Campo Cardiff-by-the-Sea Carlsbad Carmel Mountain Carmel Valley Chollas View Chula Vista City College City Heights Clairemont College Area Coronado CSU San Marcos Cuyamaca College Del Cerro Del Mar Descanso Downtown San Diego Eastlake East Village El Cajon Emerald Hills Encanto Encinitas Escondido Fallbrook Fletcher Hills Golden Hill Grant Hill Grantville Grossmont College Guatay Harbor Island Hillcrest Imperial Beach Imperial Valley Jacumba Jamacha-Lomita Jamul Julian Kearny Mesa Kensington La Jolla Lakeside La Mesa Lemon Grove Leucadia Liberty Station Lincoln Acres Lincoln Park Linda Vista Little Italy Logan Heights Mesa College Midway District MiraCosta College Miramar Miramar College Mira Mesa Mission Beach Mission Hills Mission Valley Mountain View Mount Hope Mount Laguna National City Nestor Normal Heights North Park Oak Park Ocean Beach Oceanside Old Town Otay Mesa Pacific Beach Pala Palomar College Palomar Mountain Paradise Hills Pauma Valley Pine Valley Point Loma Point Loma Nazarene Potrero Poway Rainbow Ramona Rancho Bernardo Rancho Penasquitos Rancho San Diego Rancho Santa Fe Rolando San Carlos San Marcos San Onofre Santa Ysabel Santee San Ysidro Scripps Ranch SDSU Serra Mesa Shelltown Shelter Island Sherman Heights Skyline Solana Beach Sorrento Valley Southcrest South Park Southwestern College Spring Valley Stockton Talmadge Temecula Tierrasanta Tijuana UCSD University City University Heights USD Valencia Park Valley Center Vista Warner Springs
Close