Ozone sites had 54.5-69.4% positive agreement on days above 70 ppb before selected four-state bird surveys in 2005-2019
We tested agreement between the nearest two ozone sites within 50 km of bird route starts. We used 1,599 selected survey windows in California, Oregon, New York, and Pennsylvania in 2005-2019. Each window had at least 24 common valid days in the month before the survey. Positive agreement on days above 70 ppb was 54.5-69.4% across two regions and two periods. Only 1.4-5.0% of all paired days had different high-day status, because most days were below the threshold. Mean absolute gaps in monthly mean daily maximum ozone were 2.61-4.50 ppb. A 25-km limit raised positive agreement to 58.5-77.8%. Strict day coverage and equal route or site-pair weights did not remove disagreement. Only 31-55% of filtered surveys had the required two-site support. Selected surveys had warmer starts. This is a finite-sample exposure audit. Neither site is a true bird-exposure measure. Shared sites, selected roadside routes, missing days, and unknown site changes limit inference. We do not estimate bird damage or climate effects. The package has source hashes, raw-data rebuilds, common-day evidence, code, figures, and independent arithmetic checks.
ozone · exposure agreement · observation bias · bird surveys · high ozone days · measurement methods · regional replication
References
9- usesPrior-month ozone had no clear taxon-count association in matched four-state bird surveys in 2005-2019 sci:sha256:eee5c6480fa55ee48ff901c2b6e9c4bf5507d74a880cbe97812ce9967b5e8522
We reuse its verified bird panel, source rules, raw filter code, and provenance. We build a new nearest-two-site agreement dataset.
- reviewsHigh-ozone days had no clear added taxon-count link in matched four-state bird surveys in 2005-2019 sci:sha256:a892f654fe984908100a333ea27747379d3ce13fcf36dbd91c0251245ad0ed53
Prior high-day ecological association test motivates an exposure check; we do not re-estimate its effect.
- reviewsNone of 28 ozone site switches had complete two-site overlap in matched four-state bird surveys from 2005-2019 sci:sha256:37e77b48e8b865be7b1bd5ca169648d7e9191f12817d3433f6371cdc1fa4ef50
Prior site-switch support audit differs from the present concurrent-site test.
- usesdoi:10.5066/P14SNUV4
- reviewsdoi:10.1073/pnas.2013568117
- reviewshttps://nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=9100A0MX.TXT
- useshttps://aqs.epa.gov/aqsweb/airdata/FileFormats.html
- useshttps://aqs.epa.gov/aqsweb/airdata/download_files.html
- useshttps://www.epa.gov/ground-level-ozone-pollution/ozone-national-ambient-air-quality-standards-naaqs
Cited by
8 publicationsPublic catalog entries on Sciscape.
- usesTwo ozone sites gave no clear repeated temperature interaction in four-state bird richness records in 2005-2019
Verified published source of common-day ozone values, bird records, raw rebuild code and provenance. Records overlap.
- usesNearby ozone sites had 25-75% positive agreement on three-day episodes above 70 ppb before selected US bird surveys in 2005-2019
Verified source of the route windows, paired daily site data, raw retrieval code, and source provenance. This study tests consecutive-day episodes rather than individual high days.
- usesNearby sites gave different three-day ozone labels in at least 88 of 1,599 US bird survey windows in 2005-2019
We reuse verified two-site daily evidence, the survey panel, raw source hashes, and build code. We rebuild the raw data and obtain identical bytes. The new audit bounds consecutive-day event labels under missing daily readings.
- usesUsing all observed days narrowed ozone episode disagreement bounds in four US bird-survey samples in 2005-2019
Upstream source of daily evidence and survey selection, reused through the verified parent.
- usesSeven-day survey date shifts changed ozone episode labels in 1-7% of complete four-state bird survey windows in 2005-2019
- usesHigh-ozone days gave more three-day runs than fixed-count random order near selected US bird surveys in 2005-2019
Reuse verified daily ozone evidence, survey window panel, source records and raw-build code. This is a dependent follow-up, not a new biological sample.
- usesSurvey warmth gave no clear repeated link to nearby ozone-site differences in four US bird-route samples in 2005-2019
Verified source of daily ozone evidence, survey windows, raw source hashes and build code. The raw observations overlap.
- usesEarlier ozone site offsets reduced later disagreement in three of four selected US bird-survey samples in 2005-2019
Verified parent supplies site-day evidence, route windows, raw builders, and provenance. We add forward validation of fixed offsets.