2020
DOI: 10.5194/acp-2020-40
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A Microphysics Guide to Cirrus – Part II: Climatologies of Clouds and Humidity from Observations

Abstract: Abstract. This study presents airborne in-situ and satellite remote sensing climatologies of cirrus clouds and humidity. The climatologies serve as a guide to the properties of cirrus clouds, with the new in-situ data base providing detailed insights into boreal mid-latitudes and the tropics, while the satellite-borne data set offers a global overview. To this end, an extensive, quality checked data archive, the Cirrus Guide II in-situ data base, is created from airborne in-situ measurements during 150 flight… Show more

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Cited by 17 publications
(43 citation statements)
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References 27 publications
(59 reference statements)
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“…Nonetheless, this scenario represents the maximum possible impact of convection on the local lower stratospheric humidity profile. Recent in situ measurements in active convection near the tropopause indicate substantial supersaturation with respect to ice (Krämer, 2020), which would imply even higher H 2 O mixing ratios than we assume here. However, it seems likely that once the convective vertical motions settle down, the water vapor mixing ratio should approach ice saturation within the anvils.…”
Section: 1029/2020jd032793mentioning
confidence: 55%
“…Nonetheless, this scenario represents the maximum possible impact of convection on the local lower stratospheric humidity profile. Recent in situ measurements in active convection near the tropopause indicate substantial supersaturation with respect to ice (Krämer, 2020), which would imply even higher H 2 O mixing ratios than we assume here. However, it seems likely that once the convective vertical motions settle down, the water vapor mixing ratio should approach ice saturation within the anvils.…”
Section: 1029/2020jd032793mentioning
confidence: 55%
“…The resulting ice crystal number concentration and ice water content are given by the sum of the concentrations in the individual ice modes. Further details on the cirrus parameterization, including the results of a box-model simulation, can be found in Kuebbeler (2013) and K14.…”
Section: Cloud Microphysical Scheme and Coupling To Aerosolmentioning
confidence: 99%
“…Although INPs from SOA also decrease Ni in the tropical Pacific Ocean, the total Ni is only increased by 1.1 × 10 7 m −2 in the dbfcs_new case. The predicted Ni for each case is compared with the observed Ni reported by Krämer et al (2009Krämer et al ( , 2020 (Figure 5). Data from the model have been selected to have ice water mixing ratios >10 −8 to match values seen in the in situ observations (Krämer et al, 2016).…”
Section: 1029/2019jd032233mentioning
confidence: 99%