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Surface PM 2.5⚓︎

Table Summary⚓︎

Estimated annual ground-level fine particulate matter (PM2.5) for 1998-2020 by combining Aerosol Optical Depth (AOD) retrievals from the NASA MODIS, MISR, and SeaWIFS instruments with the GEOS-Chem chemical transport model

File Metadata⚓︎

Table Information (SHRID)⚓︎

Aggregation Level File Name Unique Identifiers
SHRID pm25_shrid.dta shrid2, year

Variable Information (SHRID)⚓︎

Variable Name Description Missing % Non-missing count
pm25_min Minimum PM2.5 detected in polygon 0% 13,711,726
pm25_max Maximum PM2.5 detected in polygon 0% 13,711,726
⭐ pm25_mean Mean PM2.5 detected in polygon 0% 13,711,726
pm25_num_cells Total pixels in polygon 0% 13,711,979
year Year 0% 13,711,979

Table Information (Subdistrict)⚓︎

Aggregation Level File Name Unique Identifiers
Subdistrict pm25_pc11subdist.dta pc11_state_id, pc11_district_id, pc11_subdistrict_id, year

Variable Information (Subdistrict)⚓︎

Variable Name Description Missing % Non-missing count
pm25_min Minimum PM2.5 detected in polygon 0% 137,264
pm25_max Maximum PM2.5 detected in polygon 0% 137,264
⭐ pm25_mean Mean PM2.5 detected in polygon 0% 137,264
pm25_num_cells Total pixels in polygon 0% 137,287
year Year 0% 137,287

Table Information (District)⚓︎

Aggregation Level File Name Unique Identifiers
District pm25_pc11dist.dta pc11_state_id, pc11_district_id, year

Variable Information (District)⚓︎

Variable Name Description Missing % Non-missing count
pm25_min Minimum PM2.5 detected in polygon 0% 14,720
pm25_max Maximum PM2.5 detected in polygon 0% 14,720
⭐ pm25_mean Mean PM2.5 detected in polygon 0% 14,720
pm25_num_cells Total pixels in polygon 0% 14,720
year Year 0% 14,720

Table Information (AC07)⚓︎

Aggregation Level File Name Unique Identifiers
2007 Assembly Constituency pm25_con07.dta ac07_id, year

Variable Information (AC07)⚓︎

Variable Name Description Missing % Non-missing count
pm25_min Minimum PM2.5 detected in polygon 0% 93,748
pm25_max Maximum PM2.5 detected in polygon 0% 93,748
⭐ pm25_mean Mean PM2.5 detected in polygon 0% 93,748
pm25_num_cells Total pixels in polygon 0% 93,840
year Year 0% 93,840

Table Information (AC08)⚓︎

Aggregation Level File Name Unique Identifiers
2008 Assembly Constituency pm25_con08.dta ac08_id, year

Variable Information (AC08)⚓︎

Variable Name Description Missing % Non-missing count
pm25_min Minimum PM2.5 detected in polygon 0% 94,714
pm25_max Maximum PM2.5 detected in polygon 0% 94,714
⭐ pm25_mean Mean PM2.5 detected in polygon 0% 94,714
pm25_num_cells Total pixels in polygon 0% 94,714
year Year 0% 94,714

Note

  • Missing %: Proportion of observations with missing data
  • Zero %: Proportion of observations with zero values
  • Canary variable: The ⭐ indicates the canary variable for imputation, see this link for more details about the imputation algorithm.

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