I Thought He Came With You is Robert Ellison’s blog about software, marketing, politics, photography and time lapse.

Newsletter Improvements

It turns out I'm not great at getting a monthly newsletter out. Starting with the January 2019 newsletter I've put in place a new system - I'm storing summaries of new articles when I write them and also collecting a few links that might be of interest to ITHCWY readers. These should be sent out automatically on the first of the month so I should only skip the newsletter if nothing happened. Apologies in advance if there are any teething issues with the new format.

Surfing Dolphins

Dolphins off Ocean Beach

A pair of dolphins enjoying high surf off Ocean Beach, San Francisco

(Recent Photos)

Global Temperature Anomalies Animation, 1850 to 2018

Global temperature maximum anomaly from Jan 2010 to Nov 2018

I made this animation to visualize climate change based on the HadCRUT 4 data (specifically the ensemble median gridded data) from the Met Office Hadley Centre.

HadCRUT 4 provides temperature anomalies in a five degree grid by month and year from January 1850 to November 2018 (as of this post). Anomaly here means deviation from the 1961-1990 average.

In the animation I wanted to capture the full timespan of the data but also show long term trends. Each frame is a month of data and each five degree grid of longitude and latitude is colored based on the maximum cumulative anomaly (positive or negative) for each decade. The range for color is 0 to +/- 20.85 degrees, red for warmer and blue for cooler. This means there is a reset at the start of each decade, the first few years are mostly random noise but by the end of each decade you're seeing the range of extremes.

Spoiler alert - you can spot something happening in the last three decades.

As well as the change in temperature it's interesting to watch the increase in global coverage over time. It's surprising that even the most recent years have no readings for Antarctica. Here's a paper (PDF) discussing the impact of the missing data. The HadCRUT 4 FAQ has more detail on how the temperature anomalies were assembled.

(Previously)

Hummingbird 2

Hummingbird

A hummingbird at the Marine Cemetery in the Presidio.

(Previously)

(Recent Photos)

Treasure Island

San Francisco from Treasure Island

A timelapse from Treasure Island in the San Francisco Bay.

The first half of the video is looking west from Treasure Island and pans along the San Francisco waterfront. The second half was shot east towards Oakland and includes a storm sweeping in from the north.

Elephant Seals at San Simeon

Elephant Seals at San Simeon

Elephant Seals at San Simeon

Elephant Seals at San Simeon

Elephant Seals at San Simeon

Elephant Seals at San Simeon

Elephant Seals at San Simeon

Elephant Seals at San Simeon (Piedras Blancas elephant seal rookery).

(Recent Photos)

Grand Canyon

Grand Canyon

(Recent Photos)

Hoover Dam (Fixed)

Hoover Dam (Fixed)

(Recent Photos)

High Roller Timelapse

High Roller Ferris Wheel at The Linq in Las Vegas

Sunset timelapse of the 550 foot Ferris Wheel at The Linq in Las Vegas, Nevada (technically the High Roller Observation Wheel).

Lassen Star Trails

Star trails from the Manzanita Lake campground at Lassen Volcanic National Park

A timelapse two ways shot from the Manzanita Lake campground at Lassen Volcanic National Park (the second time I've visited and the second time that Bumpass Hell has been closed). First a regular 4K timelapse looking up from the campsite:

The second version is the same footage in HD where each frame is the cumulative maximum pixel value of all the frames up to the current frame (so it builds in star trails as the video runs):