Addressing pan-Arctic Black Carbon through the collective measurements of the IASOA observatories
Abstract
The International Arctic Systems for Observing the Atmosphere (IASOA) was initiated to address key atmospheric science questions through coordinating the considerable atmospheric observing assets at ten pan-Arctic observatories. The IASOA collection of equivalent black carbon (EBC) datasets represent ready-to-synthesize and climatically-relevant information; datasets are available at seven observatories, some spanning more than two decades. Black carbon (BC) aerosols are the most important contributor to the light absorption by aerosols (Bond et al., 2013), but their impact on climate forcing is poorly understood and has not been bound with long-term observational data in the Arctic. This presentation will report on the achievements of IASOA's recently initiated EBC working group. The group's mission is to bound the impacts of BC in the Arctic using a host of in-situ observations from seven locations. The aethalometer is the earliest and most common method used for the absorption-derived, real time EBC concentration, with the longest measurement records at various Arctic locations. The group's first initiative is to standardize the processing and error corrections schemes of Arctic aethalometer datasets with the objective of developing a new, long-term index for assessing the concentration of Arctic EBC.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2013
- Bibcode:
- 2013AGUFM.A41F0120B
- Keywords:
-
- 0305 ATMOSPHERIC COMPOSITION AND STRUCTURE Aerosols and particles;
- 1637 GLOBAL CHANGE Regional climate change;
- 0365 ATMOSPHERIC COMPOSITION AND STRUCTURE Troposphere: composition and chemistry;
- 1621 GLOBAL CHANGE Cryospheric change