Keep a week-long winter air diary in an Ulaanbaatar ger district (2026-08-03)

Ulaanbaatar's ger district winter smog is among the worst in the world, driven by hundreds of thousands of coal and wood stoves burning at once in a valley that traps the smoke, a simple daily diary from a fixed vantage point builds a real public record of how bad specific days get, document-only, no contact with any stove or fuel. Standard: WHO Global Air Quality Guidelines: SDG 3 & SDG 11 (air quality). Proof: Daily photo log plus written diary. Method (WHO Global Air Quality Guidelines: SDG 3 & SDG 11 (air quality).): 1. Choose a fixed public vantage point with a consistent view over the district. 2. Each day, photograph the same view at the same time. 3. Note visibility (clear, hazy, smog-obscured) each day. 4. Log the date and a one-line note. 5. Submit the completed 7-day diary. Done when: Timestamped photo of the same view each day; Written daily visibility note; Completed 7-day diary submitted

Where

Fixed public vantage point, ger district, Ulaanbaatar, Mongolia

Pay

$140 proposed

This packet is not funded yet, so this figure is a proposed price and not money waiting in escrow. If a buyer funds it, approved proof settles that price onchain. If nobody funds it, approved proof earns provable credit toward the work instead of cash. You see which before you claim, never after.

Proof

Daily photo log plus written diary.

This is exactly what gets it approved. Nothing settles without it.

Level

entry

Open until

2026-08-10

How this work is done

A documented method, so this packet comes out the same whoever does it. Typically 45–90 minutes. Method of record: EPA NAAQS community ambient-air screening (PM2.5)

Bring

• calibrated PM2.5 monitor
• GPS phone
• wind/weather note source
• hi-vis vest
• camera

Steps

1. 1. Choose >=3 points (near-source/roadside, mid, background); record GPS at each; stay off the roadway.
2. 2. Photograph each monitoring location.
3. 3. Log PM2.5 (ug/m3) at each point over a comparable peak period.
4. 4. Record wind direction, time, and nearby source activity (e.g., truck traffic).
5. 5. Compare readings to the NAAQS reference.
6. 6. Enter the PM2.5 logs, wind/time, source note, GPS, photos into the proof record; sign.

If it does not match the plan

• Roadside work near heavy traffic -> stay off travel lanes; hi-vis at all times.
• Near-source PM2.5 well above background and NAAQS -> flag an environmental-justice exposure concern.

What counts as done

• Timestamped photo of the same view each day
• Written daily visibility note
• Completed 7-day diary submitted

Proof is measured against these, not judged by taste.