CO2 Now

 

What the world needs to watch

Global warming is mainly the result of CO2 levels rising in the Earth’s atmosphere. Both atmospheric CO2 and climate change are accelerating. Climate scientists say we have years, not decades, to stabilize CO2 and other greenhouse gases.

To help the world succeed, CO2Now.org makes it easy to see the most current CO2 level and what it means. So, use this site and keep an eye on CO2.  Invite others to do the same. Then we can do more to send CO2 in the right direction.

Watch CO2 now and know the score on global warming, practically in real time.

CO2 Now
Scripps CO2 Data - Mauna Loa Observatory PDF Print E-mail

Scripps Institution of Oceanograph

This page presents data for atmospheric CO2 measurements by the Scripps CO2 Program at the Mauna Loa Observatory in Hawaii.   Starting March 1958, the Scripps Mauna Loa data is the longest-runing, high-precision instrument record for atmospheric CO2. 

About the Scripps CO2 Program

The Scripps CO2 program was initiated in 1956 by Charles David Keeling who directed the program until he died in 2005.  The program is now operated by  Ralph F. Keeling who also runs the Scripps O2 Program that measures atmospheric oxygen and argon.   Both programs are based at the Scripps Institution of Oceanography in San Diego (La Jolla) California.

 

Scripps Data

Source Update:  July 2, 2014:

CO2Now Documents:        Scripps CO2 Data        Scripps CO2 Data    

Scripps CO2 Program:      Scripps Source CO2 Data (CSV) 

 

Scripps Program

Scripps CO2 Program Home Page | Scripps CO2 Program

 

More from the Scripps CO2 Program

Keeling Curve Website  |  See the most recent daily average for atmospheric CO2

Keeling Curve Twitter  |  Daily averages for atmospheric CO2 (recent and historical)

 

 

Related

NOAA CO2 Data | CO2Now.org

 
Earth's CO2 Home Page PDF Print E-mail

CLICK HERE for daily CO2Now data updates.

 

 

 

399.00ppm

 

Atmospheric CO2 for July 2014

Preliminary monthly average as of August 6, 2014

(Mauna Loa Observatory: NOAA-ESRL)

 

NOTE:  On May 10, 2013, NOAA & Scripps first reported daily averages that temporarily reached 400 ppm.


Current chart and data for atmospheric CO2


 
CO2 Data Set:

Original Scripps CO2 data file dated  Wednesday August 6, 2014

 
 
Measuring Location:

Mauna Loa Observatory, Hawaii

 

 
 
Why is CO2 significant?
Carbon dioxide (CO2) is the chief greenhouse gas that results from human activities and causes global warming and climate change. To see whether enough is being done at the moment to solve these global problems, there is no single indicator as complete and current as the monthly updates for atmospheric CO2 from the Mauna Loa Observatory.
 
 
 
 
What is the current trend?
The concentrations of CO2 in the atmosphere are increasing at an accelerating rate from decade to decade.   The latest atmospheric CO2 data is consistent with a continuation of this long-standing trend.
   
 
 
What level is safe?
The upper safety limit for atmospheric CO2 is 350 parts per million (ppm). Atmospheric CO2 levels have stayed higher than 350 ppm since early 1988.

 

 
Current Data for Atmospheric CO2 PDF Print E-mail


The world's most current data for atmospheric CO2 is measured at the Mauna Loa Observatoy in Hawaii.  Measurements are made and reported independently by two scientific institutions:  Scripps Institution of Oceanography and the National Oceanic and Atmospheric Administration (NOAA).  Monthly data is posted below.   

Mauna Loa CO2 Data Sets:

    Monthly     NOAA CO2 Data
    Weekly        NOAA CO2 Data

    Monthly    Scripps CO2 Data
    Daily    
     
Scripps CO2 Data

 
NOAA Mauna Loa CO2 Data PDF Print E-mail

 

NOAA release date for monthly CO2 data:

August 6, 2014 


Atmospheric CO2
Mauna Loa Observatory (Scripps / NOAA / ESRL)
Monthly Mean CO2 Concentrations (ppm)
Since March 1958

 

The monthly MLO data set is reposted by CO2Now.org in 2 formats:

 NOAA CO2 Data for the Mauna Loa Observatory     PDF Version 

Source Data
 

Mauna Loa Monthly Mean CO2

Source data published by the National Oceanic and Atmospheric Administration (NOAA)

Mauna Loa Annual Mean CO2

Source data published by the National Oceanic and Atmospheric Administration (NOAA)

 


Data Notes

  • At CO2Now.org, data for March 1958 - April 1974 was obtained by Charles David Keeling of the Scripps Institution of Oceanography (Scripps).  Data for CO2 since May 1974 was obtained by the National Oceanic and Atmospheric Administration (NOAA).   The Scripps Institution of Oceanography also maintains a CO2 monitoring program at the Mauna Loa Observatory.  Click here to access the Scripps data for the Mauna Loa Observatory.   
  •  
  • Monthly mean CO2 concentrations are determined from daily averages for the number of CO2 molecules in every one million molecules of dried air (water vapor removed).  Annual mean CO2 concentrations are the arithmetic mean of the monthly averages for the year.  Atmospheric CO2 concentrations are expressed as parts per million (ppm).

 

  • NOAA data published within the past year is preliminary and subject to change by NOAA due to its recalibration of the reference gas mixture used or other quality control procedures.  In some cases, data from earlier years may be changed for the same reasons.  Usually, these changes are minor. See the NOAA change log and notes that was started in August 2008 to keep a public record of the adjustments and reasons for the adjustments.   

 

  • All data in this table is republished from the most current data available from NOAA.  Data is republished independently by Pro Oxygen at CO2Now.org to make it easier for people to see the latest atmospheric CO2 data and trend information.  A delay of 4 to 24  hours typically occurs between the release of monthly data by NOAA and the publication of updates at CO2Now.org.   The accuracy of republished data can be checked by reviewing the source data.   In the event that a publication error is detected, please send details to This e-mail address is being protected from spam bots, you need JavaScript enabled to view it .   

 


 

More Data

 


Related

CO2 Acceleration  |  CO2Now.org

Mauna Loa Science and Wonder  |  CO2Now.org


 
The CO2Now Climate Sheet PDF Print E-mail

The Climate Sheet

Data current as of January 19, 2014

Climate Sheet posts the world’s most current and important planetary data and targets – together in one place from leading global sources.  The CO2Now Climate Sheet enumerates the chain of causes that are driving humanity’s largest environmental crises – global warming, climate change and ocean acidification.  It also sets out key scientific markers for a stable climate system.

Read more...
 
Mauna Loa CO2 Board PDF Print E-mail


The Most Current CO2 Data on Earth

Atmospheric CO2  |  Mauna Loa Observatory

NOAA-ESRL  |  Data available since 1974

Scripps CO2 Program  |  Data available since 1958

Period

Latest Data

Comparison 

Source 

Last Update 

Daily

click here or here

397.16 ppm

Aug 16 2014**

394.62 ppm

Aug 16 2013

 

Scripps CO2

Aug 17  2014

Daily

click here

396.62 ppm

Aug 21 2014**

no comparison

is available

for 2013

 NOAA-ESRL


Aug 22 2014

 

Weekly

397.13 ppm

Aug 10 - 16 2014

395.11 ppm

Aug 10 - 16 2013

NOAA-ESRL


Aug 18 2014


also see historical Scripps weekly CO2 data here

Monthly

401.30 ppm

June 2014

398.78 ppm

June 2013

Scripps CO2

July 2, 2014

Monthly

399.00 ppm

July 2014

397.20 ppm

July 2013

NOAA-ESRL

 

Aug 6 2014

Annual

396.52 ppm*

2013

393.88 ppm*

2012

Scripps CO2

July 2 2014

Annual

396.48 ppm

2013

393.82 ppm

2012

NOAA-ESRL


Aug 6 2014

* Scripps annual CO2 data is calcuated by CO2Now using Scripps monthly CO2 data.
** Averages determined by Scripps and NOAA cover a different 24-hour time period due to time zone differences. 

 

Atmospheric CO2    |  Global Data

NOAA-ESRL Cooperative Air Sampling Network 

Global Data Available Since 1980

Period 

Latest Data 

Comparison 

Last Update 

Monthly 

397.82 ppm

June 2014

395.89 ppm 

June 2013

Aug 6 2014


Annual

395.31 ppm 

2013

392.51 ppm 

2012

Aug 6 2014


 

 

Read more...
 
Weekly Data | Atmospheric CO2 PDF Print E-mail

 


Atmospheric CO2  - Weekly Data
Mauna Loa Observatory   |   NOAA-ESRL Data

Week

Atmospheric CO2 


  August 10 - 16 2014


397.13 ppm

(last week)


August 10 - 16 2013

 


395.11 ppm 

(1 year ago)


 


August 10 - 16 2004

 


376.32 ppm
 

(10 years ago)

 


Atmospheric CO2  -  Increase Since 1800
Mauna Loa Observatory   |   NOAA-ESRL Data

As of Last Week

Increase Since 1800 


August 10 - 16 2014


+ 118.66 ppm

NOAA-ESRL updated weekly data on August 20, 2014.  ("ppm" means parts per million)

 

Read more...
 
Annual Data | Atmospheric CO2 PDF Print E-mail


Annual Levels for Atmospheric CO2

Atmospheric CO2 (ppm)The 2013 average annual concentration of CO2 in the atmosphere (Mauna Loa Observatory) is 396.48 parts per million (ppm).   The 2012 average is 393.82 ppm.  

For the past decade (2004-2013) the average annual increase is 2.1 ppm per year.  The average for the prior decade (1994-2003) is 1.9 ppm per year.    Annual data for 2012 was first posted January 9, 2014, by NOAA-ESRL in the United States. 

Since the 1958 start of precision CO2 measurements in the atmosphere, the annual mean concentration of CO2 has only increased from one year to the next.   The CO2 data below provide a simple view of the annual trend. 

Read more...
 
How CO2 is Measured PDF Print E-mail

 

NOAA  |  In situ CO2 monitoring program

NOAA  |  Mauna Loa FAQs

NOAA  |  Location of the Mauna Loa Observatory

 

 
Carbon Impact Map PDF Print E-mail

 

When carbon fossil fuels are extracted from the Earth’s crust and burned for energy, the emitted carbon dioxide is not visible.  That makes it hard to see and know how the use of fossil fuel adds up to serious global impacts like sea level rise, increased famine and species extinction.  The Carbon Impact Map is a climate literacy tool from CO2Now.org that traces the progression of carbon from its extraction and use to impacts on the planet and civilization to planetary feedbacks.   It presents an overall picture insix major steps.  The Carbon Impact Map is not an exhaustive list of the factors. 

Humanity's Carbon Extraction

Read more...
 
Global Carbon Emissions PDF Print E-mail

http://forio.com/simulation/climate-development/

Global Carbon Budget 2010


Global CO2 Budget 2013

GlobalCarbonProject.org posted data for the 2013 Global Carbon Budget on November 20, 2013.  Key findings are listed here:

*Global emissions due to fossil fuel alone are set to grow in 2013 at a slightly lower pace of 2.1% than the average 3.1% since 2000, reaching a level that is 61% above emissions in 1990

*Growth rates for major emitter countries in 2012 were 5.9% (China), −3.7% (USA), −1.3% (EU28), and 7.7% (India).

*The 2012 carbon dioxide emissions breakdown is coal (43%), oil (33%), gas (18%), cement (5.3%) and gas flaring (0.6%).

*Atmospheric carbon dioxide levels increased in 2012 at a faster rate than the average over the past 10 years because of a combination of continuing growth in emissions and a decrease in land carbon sinks from very high levels in the previous two years.

* Dr. Mike Raupach of CSIRO: "A continuation of the emissions growth trends observed since 2000 would place the world on a path to reach 2 degrees Celsius above pre-industrial times in 30 years"

*Key Sources:  GlobalCarbonBudget.org   CDIAC 2013 Global Carbon Budget

>>>>  Links to the source data, credits and high-resolution images are given below.

Read more...