The Network-at-a-Glance page displays summary statistics about the AmeriFlux network, its flux tower sites, data sets, and user community. This provides a useful snapshot to PIs, Program Managers, data users, and others.
Last update: May 14, 2025 5:30AM PST
Sites
- Sites registered in AmeriFlux 751
- Sites that have downloadable flux data 525
- Site years of downloadable AmeriFlux flux data 3848
- Number of AmeriFlux Core Sites 43
- Number of Registered AmeriFlux Sites by Year
Show Chart Data| Years | Number of AmeriFlux Sites |
|---|
| 1991 | 1 |
| 1993 | 2 |
| 1994 | 3 |
| 1995 | 4 |
| 1996 | 7 |
| 1997 | 13 |
| 1998 | 16 |
| 1999 | 24 |
| 2000 | 29 |
| 2001 | 46 |
| 2002 | 60 |
| 2003 | 67 |
| 2004 | 87 |
| 2005 | 96 |
| 2006 | 101 |
| 2007 | 119 |
| 2008 | 121 |
| 2009 | 124 |
| 2011 | 125 |
| 2012 | 126 |
| 2013 | 170 |
| 2014 | 209 |
| 2015 | 234 |
| 2016 | 261 |
| 2017 | 300 |
| 2018 | 385 |
| 2019 | 471 |
| 2020 | 521 |
| 2021 | 558 |
| 2022 | 589 |
| 2023 | 636 |
| 2024 | 689 |
- Five most recent sites to join the Network
| Site ID | Join Date |
|---|
| CA-LU1 | 2025/05/06 |
| US-MZA | 2025/05/06 |
| US-Sx1 | 2025/05/06 |
| US-Sx2 | 2025/05/06 |
| US-Sx3 | 2025/05/06 |
Geography
- Sites by country
| Country | Site Count |
|---|
| Argentina | 7 |
| Brazil | 23 |
| Canada | 80 |
| Chile | 5 |
| Colombia | 2 |
| Costa Rica | 5 |
| Mexico | 13 |
| Panama | 2 |
| Peru | 5 |
| Puerto Rico | 2 |
| USA | 607 |
- Sites in each IGBP landcover
Show Chart Data| IGBP | Site Count |
|---|
| Barren Sparse Vegetation | 10 |
| Closed Shrublands | 13 |
| Cropland/Natural Vegetation Mosaics | 14 |
| Croplands | 146 |
| Deciduous Broadleaf Forests | 60 |
| Deciduous Needleleaf Forests | 1 |
| Evergreen Broadleaf Forests | 19 |
| Evergreen Needleleaf Forests | 103 |
| Grasslands | 92 |
| Mixed Forests | 17 |
| Open Shrublands | 41 |
| Permanent Wetlands | 118 |
| Savannas | 8 |
| Snow and Ice | 1 |
| Urban and Built-Up Lands | 18 |
| Water Bodies | 13 |
| Woody Savannas | 15 |
Registered AmeriFlux Members
- AmeriFlux members 20319
- New AmeriFlux members in the past year 3060
Downloads of AmeriFlux BASE flux data since November, 2015
(from ameriflux.lbl.gov)
- Total unique downloads 49535
- AmeriFlux sites whose data have been downloaded 525
- Users who have downloaded AmeriFlux BASE flux data 7069
- How do people use the AmeriFlux BASE flux data?
Show Chart Data| Intended Use | Use Count |
|---|
| Education (Teacher or Student) | 8935 |
| Other | 2467 |
| Research - Land model/Earth system model | 10672 |
| Research - Multi-site synthesis | 5165 |
| Research - Other | 5534 |
| Research - Remote sensing | 9368 |
Downloads of AmeriFlux FLUXNET data since September, 2021
(from ameriflux.lbl.gov)
- Total unique downloads 10803
- AmeriFlux sites whose data have been downloaded 240
- Users who have downloaded AmeriFlux FLUXNET data 3048
- How do people use the AmeriFlux FLUXNET data?
Show Chart Data| Intended Use | Use Count |
|---|
| Other | 643 |
| Research - Other | 609 |
| Research - Remote sensing | 2111 |
| Education (Teacher or Student) | 1941 |
| Research - Multi-site synthesis | 1318 |
| Research - Land model/Earth system model | 1224 |
Downloads of FLUXNET2015 data since January, 2016
(from fluxnet.org)
- Total unique downloads 40445
- AmeriFlux sites whose data have been downloaded 86
- Users who have downloaded FLUXNET2015 data for AmeriFlux sites 8520
- How do people use the FLUXNET2015 data?
Show Chart Data| Intended Use | Use Count |
|---|
| Education (Teacher or Student) | 8260 |
| Other | 3997 |
| Research - Land model/Earth system model | 7274 |
| Research - Multi-site synthesis | 5857 |
| Research - Other | 2599 |
| Research - Remote sensing | 9876 |
AmeriFlux Data & Data Processing
- AmeriFlux BASE Site Years Availability
Show Chart Data| Years | Published | Pending QA/QC |
|---|
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 5 | 0 |
| 1995 | 7 | 0 |
| 1996 | 12 | 0 |
| 1997 | 19 | 0 |
| 1998 | 26 | 1 |
| 1999 | 36 | 2 |
| 2000 | 43 | 2 |
| 2001 | 63 | 2 |
| 2002 | 85 | 3 |
| 2003 | 94 | 3 |
| 2004 | 116 | 3 |
| 2005 | 126 | 2 |
| 2006 | 119 | 4 |
| 2007 | 124 | 8 |
| 2008 | 134 | 10 |
| 2009 | 139 | 12 |
| 2010 | 140 | 14 |
| 2011 | 141 | 13 |
| 2012 | 143 | 17 |
| 2013 | 148 | 25 |
| 2014 | 158 | 22 |
| 2015 | 166 | 28 |
| 2016 | 175 | 31 |
| 2017 | 214 | 22 |
| 2018 | 215 | 25 |
| 2019 | 230 | 17 |
| 2020 | 202 | 17 |
| 2021 | 197 | 20 |
| 2022 | 175 | 22 |
| 2023 | 149 | 29 |
| 2024 | 48 | 24 |
- AmeriFlux BASE Site Years Available by IGBP
Show Chart Data| Years | BSV | CRO | CSH | CVM | DBF | DNF | EBF | ENF | GRA | MF | OSH | SAV | SNO | URB | WAT | WET | WSA |
|---|
| 1991 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1992 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1993 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1994 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 |
| 1995 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 2 | 0 |
| 1996 | 0 | 1 | 0 | 0 | 4 | 0 | 0 | 5 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
| 1997 | 0 | 2 | 2 | 0 | 4 | 0 | 1 | 7 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1998 | 0 | 2 | 2 | 0 | 5 | 0 | 1 | 10 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 2 | 0 |
| 1999 | 0 | 2 | 3 | 0 | 6 | 0 | 1 | 16 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 4 | 0 |
| 2000 | 0 | 2 | 3 | 0 | 8 | 0 | 1 | 18 | 4 | 2 | 0 | 0 | 0 | 0 | 0 | 5 | 0 |
| 2001 | 0 | 4 | 3 | 0 | 9 | 0 | 1 | 29 | 6 | 3 | 3 | 0 | 0 | 0 | 0 | 4 | 1 |
| 2002 | 0 | 4 | 3 | 0 | 13 | 0 | 2 | 40 | 9 | 3 | 5 | 1 | 0 | 0 | 0 | 4 | 1 |
| 2003 | 0 | 5 | 4 | 0 | 13 | 0 | 2 | 44 | 9 | 4 | 5 | 1 | 0 | 0 | 0 | 6 | 1 |
| 2004 | 0 | 8 | 6 | 0 | 16 | 0 | 3 | 47 | 15 | 5 | 5 | 1 | 0 | 0 | 0 | 8 | 2 |
| 2005 | 0 | 11 | 7 | 0 | 16 | 0 | 2 | 49 | 18 | 5 | 6 | 1 | 0 | 0 | 0 | 8 | 3 |
| 2006 | 1 | 11 | 7 | 0 | 15 | 0 | 2 | 40 | 20 | 5 | 6 | 1 | 0 | 0 | 0 | 8 | 3 |
| 2007 | 1 | 12 | 3 | 0 | 16 | 0 | 2 | 40 | 22 | 6 | 9 | 2 | 0 | 0 | 0 | 7 | 4 |
| 2008 | 1 | 15 | 2 | 0 | 16 | 0 | 2 | 40 | 22 | 6 | 14 | 1 | 0 | 0 | 1 | 9 | 5 |
| 2009 | 1 | 19 | 2 | 0 | 14 | 0 | 2 | 38 | 27 | 5 | 12 | 4 | 0 | 0 | 1 | 10 | 4 |
| 2010 | 1 | 18 | 2 | 0 | 14 | 0 | 2 | 41 | 25 | 5 | 13 | 4 | 0 | 0 | 1 | 10 | 4 |
| 2011 | 3 | 22 | 2 | 0 | 13 | 0 | 2 | 29 | 22 | 5 | 14 | 4 | 0 | 0 | 1 | 19 | 5 |
| 2012 | 3 | 23 | 2 | 0 | 14 | 0 | 1 | 28 | 23 | 5 | 14 | 4 | 1 | 0 | 2 | 18 | 5 |
| 2013 | 3 | 27 | 1 | 0 | 14 | 0 | 1 | 29 | 20 | 5 | 14 | 4 | 1 | 1 | 3 | 20 | 5 |
| 2014 | 4 | 25 | 4 | 0 | 13 | 1 | 3 | 28 | 21 | 5 | 16 | 4 | 1 | 0 | 3 | 25 | 5 |
| 2015 | 3 | 30 | 4 | 4 | 14 | 1 | 3 | 28 | 22 | 4 | 14 | 4 | 1 | 0 | 2 | 27 | 5 |
| 2016 | 3 | 30 | 4 | 4 | 20 | 0 | 3 | 28 | 27 | 3 | 13 | 4 | 1 | 0 | 3 | 27 | 5 |
| 2017 | 3 | 33 | 4 | 6 | 31 | 0 | 3 | 33 | 33 | 5 | 18 | 4 | 1 | 2 | 4 | 29 | 5 |
| 2018 | 2 | 32 | 3 | 5 | 25 | 0 | 4 | 35 | 36 | 6 | 17 | 3 | 1 | 4 | 4 | 34 | 4 |
| 2019 | 2 | 31 | 3 | 6 | 34 | 0 | 4 | 39 | 35 | 6 | 16 | 3 | 1 | 5 | 4 | 37 | 4 |
| 2020 | 2 | 34 | 3 | 4 | 24 | 0 | 4 | 34 | 29 | 6 | 13 | 3 | 1 | 4 | 4 | 33 | 4 |
| 2021 | 2 | 38 | 4 | 3 | 23 | 0 | 4 | 32 | 27 | 7 | 11 | 2 | 1 | 5 | 2 | 32 | 4 |
| 2022 | 1 | 25 | 4 | 3 | 20 | 0 | 4 | 31 | 23 | 6 | 11 | 2 | 1 | 3 | 2 | 35 | 4 |
| 2023 | 1 | 26 | 4 | 3 | 18 | 0 | 3 | 25 | 20 | 6 | 10 | 2 | 1 | 3 | 0 | 22 | 5 |
| 2024 | 1 | 9 | 0 | 0 | 5 | 0 | 0 | 9 | 5 | 4 | 2 | 1 | 0 | 0 | 0 | 8 | 4 |
